Re: [Emc-users] Use of Chris's truetype-tracer from G code?
One significant part of this that is a real pain is that the parser converts all text to upper case early in the process. Ken On 08/17/2010 02:55 PM, Igor Chudov wrote: I am totally in love with truetype-tracer and already engraved a bunch of stuff. I wish I had a faster spindle, but I digress. What I am thinking is that it would be really great to somehow integrate it with G code a little bit somehow, so that we could do it inside G code. Example of what I was thinking is to use comments, like they are used for printing or MSG: (FONT /font/dir/myfont.ttf) (TEXT To my beloved favorite person) G777 X0.5 Y0.5 Z-0.02 P0.0001 F3 which would write the given text with the given font starting at (0.5, 0.5). Now I would not want to abuse anyone, especially if no one wants this, but if the implementation of this sort of concept is straightforward, I could try to take a stab at implementing it. -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Jog under PAUSE / tool cnange
Jog on tool change (or on pause) should be straight forward. At the pause, simply remember each of the jogs. Then when resume is executed, play them back in reverse order. I believe that all of this can be done with HAL components. This would NOT solve the touch off problem. One could, of course, use an offset HAL component that could be used as part of a touch off. Ken On 5/17/2010 6:12 AM, Lester Caine wrote: Andy Pugh wrote: it seems that the reason that jog-on-tool-change is possible is that the motion controller stops there anyway (and expects to stop there). I guess this means that jog-on-tool-change is relatively easy, though perhaps it needs to refuse to restart unless it is at it's safe retract position to save the risk of wiping out clamps and work on the way back from the touch-off fixture. This is, I think, the crux of the problem. It is not so much the 'current position', but that the trajectory planner simply does not have enough information to work on when stopped 'mid flow'? It should be possible to tag 'safe' points, but as has been pointed out, these could be some time or distance from the actual current cutting point. Even dry running will not necessarily get to the same point, and invariably there will be a 'mark' of some sort where the cutter picks up again in the work simply because it is not now cutting up until that point. Steve ... I think the main problem here is not so much that nobody wants to do it, but rather nobody can get their head around the mathematics to work out HOW to do it ;) Perhaps we need to flag possible 'stop points' through the code where the trajectory planner can work from? Virtual tool change points ;) -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Jog under PAUSE / tool cnange
of thousands of lines of code, for nothing? But it does work. It works because programming can be fun. It works because some programmers are craftsmen who get satisfaction from creating something that they can be proud of. It works because some programmers simply like to make people happy. It works best when the programmers are also the customers. They don't have to wave money at themselves - they just write the code to do what they need. Sometimes they know it will be easy, and just do it. Sometimes they know it will be hard, but they want it bad enough to do it anyway. Sometimes they think it will be easy, but it winds up hard. In business, those are the projects that get canceled due to cost overruns. In free software, the boss is also the programmer is also the customer, and if he wants it bad enough it happens in spite of overruns. So yes - most features get developed when a developer wants that feature for himself. Such is life. Where do these features come from, who is tasked to write them This is not a business, where programmers are paid to do whatever the boss wants done. You don't task free software developers, you ask them. They will do the work because they want to make you happy, or because they consider the feature a technically elegant addition to the program, or because it is fun, or for whatever other reason motivates them to contribute to the project. In a business, nothing gets done unless it is expected to be profitable, and that means having a good idea of exactly what the job is going to cost. You wouldn't quote a machining job until you sit down and estimate the cost of doing it. Now imagine a customer who cannot do the work himself, does not have a good understanding of exactly how much work is needed, refers to the opinions of those are familiar with the type of work as excuses, and suggests that they don't know much about the real world. Would you as a business owner want to serve this customer? Discussing would be a start! Consider the first 2/3 of this message my contribution to the discussion. The last third is a rant - I'll freely admit that. But I don't think the discussion can be useful unless everyone involved understands what motivates people to work on free software. Feel free to chop the last part, and reply to the technical issues - they are the issues that need to be solved if this feature is ever going to happen. John Kasunich -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Starting spindle with F9 with spindle speed DAC
Jon, Does your VFD have provision for an external braking resistor? Might that help with the over heating? Ken On 5/9/2010 6:36 PM, Jon Elson wrote: Hello, all, I just added a DAC for spindle speed control to my Bridgeport. For years, I just had forward and reverse contact closures to the VFD and a manual speed pot. Now, I have a DAC channel from EMC to the VFD. I can start the spindle with an MDI entry like M03 S2500, but when I try to start the spindle with F9, it sends the spindle forward contact closure, but the DAC had been reset to zero. Is there a way to make the F9 key use the last spindle speed setting? (In other results, I have been doing a bunch of rigid tapping on 2-56 and 6-32 holes. The only problem I had was finding out that my $8 spiral-flute taps are not good for deep holes. They bind up. A spiral POINT tap goes through like butter. 1000 RPM for 2-56, 800 RPM for 6-32. My only problem is all the reversing makes my VFD get overheat alarms, even with a fan on it. I probably need to get a bigger VFD.) Jon -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CAM solutions
I'm also an Alibre user. Some years ago I got the free version of Alibre Express. I found it to be just what I needed -- until they upgraded it. Then it stopped supporting creation of two dimensional drawings from 3-D models. I recently bought the current version ($97 I think) before they required that you buy the one year maintenance. It is an excellent product. The free CAM version doesn't support 2-D profiling. The only output mode it seems to support is a raster scan where it moves up and down on the Z axis. It does support outputting DXF files. The free version of CAMBAM can input those files and generate just what I need. (I think that's the way I made the combination work -- it's been a while.) Ken On 3/23/2010 1:57 PM, Andy Pugh wrote: On 23 March 2010 18:28, Stephen Wille Padnosspad...@sover.net wrote: Roland Jollivet wrote: I truly wish some company would bring out a 'real' CAD/CAM package at 1/5th of the price and blow the others out the water. Well, someone actually did. Unfortunately, it doesn't seem to be going very well for them. I bought CadMax Solid Masterhttp://www.cadmax.com about 5 years ago. It's a real parametric solid modeling package, with a dynamic feature tree (much like SolidWorks), import/export of several formats (though unfortunately IGES costs extra), and fully associative sketches and prints. Alibre is cheaper still and supports IGES without extra expense. All it seems to lack is the ability to change dimensions in a drawing and have the model change to match (and I am not completely sure that the facility is missing, it might be I have not found it). I used AutoDesk Inventor all day, every day for a couple of years and I have to confess that there are not a great number of Inventor features missing from Alibre that I notice the lack of. The $197 / £89 version has a Demo version of the MecSoft CAM package available, and I believe that there is a way to unlock it into a very limited version (Alibre CAM Xpress) but I can't figure out how. The Demo version doesn't output G-Code. I would certainly say that it is worth trying the 30 Day free trial version of Alibre Design, it runs under VMWare on a Mac and probably also under Wine in Linux. After 30 days it reverts to the Express Version, but even that seems perfectly usable, the main limits being 5 parts per assembly and no Inventor/ProE import/export. -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Big files
The problem is the Axis interface, not the interpreter. I believe that there is a special comment format that will disable previewing parts of the file. Doing that will speed things up -- at the cost of not being able to preview those parts. Ken ??? ? wrote: Hello guys I have G-CODE program about 70 Mb and 230 lines. EMC loads it very very slow. Any ways to do system faster? -- The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Interferometric leadscrew measurement/mapping?
Yes, I have an Agilent 5517D which is a frequency stabilized two frequency laser that I got on Ebay. How fast can the counters on the 5I20 count? I would need a pair of perhaps 32 bit counters that can count at more than 4 MHz and can be read out simultaneously. (Actually, copied into another set of registers at the same time and then transferred to the host before the next copy time). Ken Anders Wallin wrote: A laser interferometer is on my todo list. I've acquired all of the optics on ebay for a total of a few hundred dollars. I've built a power supply. The major part I'm missing is the counting and interpolating electronics with a computer interface. Hi Ken, the heterodyne interferometers I have found described mostly use a two-frequency laser which emits two orthogonal polarizations with slightly (500kHz? or in your case 4 MHz) different frequency. Did you find a Zeeman-stabilized two-frequency laser on ebay? Or are you planning to DIY and put magnets around a normal HeNe tube? Sams Laser FAQ has a description: http://www.repairfaq.org/sam/laserchn.htm#chndzees The other method is to use an acousto-optic modulator to shift the frequency of the light. But the papers I've found use two modulators, and I only have one to spare right now... If I can either find a two-frequency HeNe or DIY with magnets then I'd be interested in testing this, possibly with the m5i20 (already has fpga code for fast encoder counters) for data acquisition. Anders -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Interferometric leadscrew measurement/mapping?
Peter, What type of counter do you use that can propagate a carry over 32 bits in 10 nsec? That's what you need to count at 100 MHz. Ken Peter C. Wallace wrote: On Sun, 20 Dec 2009, Kenneth Lerman wrote: Date: Sun, 20 Dec 2009 10:54:46 -0500 From: Kenneth Lerman kenneth.ler...@se-ltd.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Interferometric leadscrew measurement/mapping? Yes, I have an Agilent 5517D which is a frequency stabilized two frequency laser that I got on Ebay. How fast can the counters on the 5I20 count? I would need a pair of perhaps 32 bit counters that can count at more than 4 MHz and can be read out simultaneously. (Actually, copied into another set of registers at the same time and then transferred to the host before the next copy time). Ken The counters will count fast enough but with hostmot2 they are only 16 bits wide (This should not be a problem at 4 MHz as the rollover rate would only be 64 Hz and servo thread sampling would likely be at 1 KHz or more). Its possible to latch both counters simultaneously with the index (or probe) input so seem like you could do what required. Probably better would be to add a HostMot2 module for interferometer counting, with common reset, 32 bit counters (maybe with difference available) and perhaps a relative phase register, (at 100 MHz sample rate you could get ~15 degrees resolution of you 4 MHz reference) I would not mind doing the firmware (probably no more than a couple hours work), but the HostMot2 driver would need to have support added for the special counter Anders Wallin wrote: A laser interferometer is on my todo list. I've acquired all of the optics on ebay for a total of a few hundred dollars. I've built a power supply. The major part I'm missing is the counting and interpolating electronics with a computer interface. Hi Ken, the heterodyne interferometers I have found described mostly use a two-frequency laser which emits two orthogonal polarizations with slightly (500kHz? or in your case 4 MHz) different frequency. Did you find a Zeeman-stabilized two-frequency laser on ebay? Or are you planning to DIY and put magnets around a normal HeNe tube? Sams Laser FAQ has a description: http://www.repairfaq.org/sam/laserchn.htm#chndzees The other method is to use an acousto-optic modulator to shift the frequency of the light. But the papers I've found use two modulators, and I only have one to spare right now... If I can either find a two-frequency HeNe or DIY with magnets then I'd be interested in testing this, possibly with the m5i20 (already has fpga code for fast encoder counters) for data acquisition. Anders -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support
Re: [Emc-users] Interferometric leadscrew measurement/mapping?
A laser interferometer is on my todo list. I've acquired all of the optics on ebay for a total of a few hundred dollars. I've built a power supply. The major part I'm missing is the counting and interpolating electronics with a computer interface. The system generates two pulse trains at about 4 MHz; a reference signal and a measurement signal. Each cycle of the 4 MHz represents a single wavelength of light. The difference in the number of cycles of each signal is the relative motion of the reference reflector and the measurement reflector. The electronic can just have two counters that are transmitted to a computer to display the difference. One can be fancier and do some interpolation to measure the relative phases of the two signals. That can yield an increase of resolution of a factor of a hundred or more. See: http://cp.literature.agilent.com/litweb/pdf/05517-90140.pdf for information on the principles of operation. Ken Anders Wallin wrote: Happy to see some pic of your's prototype ! I have ever made an prototype interferometer to do measurement of distance. And I have some difficult to have a good signal on photodiode to have stable measurement. one picture and some text is now here. http://www.anderswallin.net/2009/12/michelson-interferometer/ I hope to analyze the data and post a result picture later when I have time. For that i know I think to know in which direction you are going you must detect the front side or down side of interference with two photodiode reading the same interference but with an difference of period T/4 in long ! Looks like absolute encoders ! Yes. You need two signals in quadrature. But how is this typically achieved in a commercial instrument? These things must be very robustly built if they are used in an industrial setting! AW -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commercial Info
Li's posting brings to mind a question. Should we provide an area on our Wiki for listings of a commercial nature? In particular should we provide a place where EMC consultants can post their contact information? In the past, I believe we've seen people who would like to retrofit machines to EMC, but lack the hardware and/or software support to do so. I believe that we should allow: 1 -- A listing page where contact information is provided. This would permit three or four lines per person. 2 -- User pages -- limited to text only that one could use for a brief (we could limit the number of lines) pitch describing the services provided. This would be supported by a single link on the front page of the Wiki. Anyone who didn't want to look at sales pitches wouldn't have to look at it. Ken Yi-Shin Li wrote: Sorry to emc2-list-users, I should made previous mail off-list. I apologize again for sending irreverent messages to this list. Sincerely, Yishin Li ---Stuff Deleted--- -- This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How Exactly does a Mister Work
I have some ruby orifices measuring -- two sizes 11.5 and 26 thousandths. They are set in brass cylinders measuring .125 by .125 with a slight tapered end. They also have stainless steel screens to keep them from clogging. I usually press fit them into a reamed hole. I can spare a few if Gene or someone would like to try them. Ken dave wrote: On Fri, 2009-11-20 at 16:39 +, Andy Pugh wrote: 2009/11/20 Gene Heskett gene.hesk...@gmail.com: A cube of dry ice sitting on it would help, but would raise the available oxygen too. I am fairly sure it would displace the oxygen (being heavier) and so would both cool and reduce oxide formation. You might have hit on a cunning plan, and it would look cool too. Carbon Dioxide doesn't disassociate easily but will if pushed hard. It cannot be used in heat-treating furnaces for that reason but for cooling/shielding Al machined parts I think it will work just fine. I'm not sure the kinetics of Al oxidation are as aggressive as Gene states but cannot find any evidence to support or disallow such a claim. The oxidation curve, at least at high temps (600 F), is parabolic so it limits fairly quickly. A couple of alternatives for small orifices come to mind. Diesel rebuild shops should always have a supply of used injector nozzles. I understand the newer ones are carbide. IIRC Gene had a tap remover (crude edm) running at one time. That should fab almost any small hole he wants. :-) Small volumes of oil/mist might be available by using model airplane engines as pumps. Just thinking out loud. Usually dangerous. Dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Joint 2 following error seems very easy to provoke on a G83 peck cycle?
Been there, done that. I found that I changing the maximum acceleration on the Z axis solved the problem. Or perhaps it was the maximum Z velocity. Ken Gene Heskett wrote: But not at other times. I have it running quite a bit slower in the ini than it can run. Changing the F number in the command doesn't seem to help, is is not enough, it can run 30 ipm and I'm limited to half that in steady state running. 2.3.4-1 Suggestions? Thanks. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] WG: Re: WG: Re: axis and batch processing SOLVED!
EMC converts every line to lowercase only when it reads the line. It also removes blank spaces when parsing the gcode. That is apparently part of the rs274ngc standard. For that reason, the behavior you are seeing is not a bug. A person with more energy than I have could add an option to do away with that conversion. It would have to include recognizing X and x as both referring to the same code. Doing that would break programs that depend on having oaBc recognized at oabc, though. Ken Chris Epicier wrote: Just one more thing: make sure your subprogramfiles are all written in lowercases. So, if something like MySubProgramFile is called, axis looks for a file like mysubprogramfile thus mot considering uppercases. In my understanding, this should not happen. Is this a bug? greets chris Hi all Spent now a couple of hours more on this. I looked at the emc 2.3.3 and earlier versions release notes. Among other points named O words is listed. Do I need toupgrade from 2.2.8 ? Got it sorted out: you *need* EMC2 version 2.3.3 to get the sample code of this: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?SubProgramFiles to run. That was not obvious to me. Greets chris PS: Off to some large cutting :-) -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] WG: Re: WG: Re: axis and batch processing
To generate lots of debug messages: In your.ini file section [RS274NGC] add the line LOG_LEVEL = 999 Then the file emc_log will get a log containing the interpreter activity regarding o-words, subroutines, etc. You probably don't want this enabled when you are doing something useful because the file will be very large. I suspect that you will find that the file prefix is wrong. Put the log up on pastebin and we can take a look at it. One neat thing you can do is load a file containing lots of subroutines. If you have enabled LAZY_CLOSE in your ini file, you will then be able to invoke the subroutines from the MDI. Ken Chris Epicier wrote: Dear Steve Try removing the O sub/endsub lines and loading the files individually. That should get you a line number where the error occurs (I hope). The files were actually converted into subfiles from standalone files. The standalone files work without any error and do not show O sub/endsub lines. They do actually also run w/o the M30 command at the end, so... I glanced at the files and didn't see anything strange. ... confirmed, they run if loaded into axis as standalones, also the preview is there and I can rotate the display or whatever. One thing to note though, the interpreter behaves as though there were no spaces in the line. When calling subroutines that take parameters, each parameter needs to be enclosed in [] to insure that it's treated as a separate entity. If there are any places where you have two numbers separated only by whitespace, that will be an error. As an example, 1.25 3.99 will be interpreted as 1.253.99, which is a bad number format. there are only twowhitespaces in the sub files, seperating these two terms: -Olabels -sub/endsub I have no parameters to pass from the master to the subs I'm not sure where else to point you. Hope still this can be sorted out. It would be just great, If a coud have a trace window to see what axis does when it loads a file and also when it starts to interprete the file. Finally jan mentioned he could get a preview of my files. So I should beleieve it is somewhere in my setup that runs smootheley when using stabndrd individual files? chris PS: Ian, I hope that this message is in line with lists policy -- Come build with us! The BlackBerryreg; Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9#45;12, 2009. Register now#33; http://p.sf.net/sfu/devconf ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Come build with us! The BlackBerryreg; Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9#45;12, 2009. Register now#33; http://p.sf.net/sfu/devconf ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC G-Code - Calling Files
What directory is the file you are providing in? The .ini file should have a line PROGRAM_PREFIX=some_directory in the [DISPLAY] section. That directory is where the file should be located. The file name should be something like: 1.ngc or name.ngc. Ken Thorsten Seefeldt wrote: I tried this using the emc2-sim version 1:2.3.3 I also use the actual non-sim version of emc2. Greetings Thorsten Am Samstag, den 12.09.2009, 01:44 +0300 schrieb Alex Joni: What emc2 version are you using? Regards, Alex - Original Message - From: Thorsten Seefeldt th.seefe...@gmx.de To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, September 12, 2009 1:15 AM Subject: Re: [Emc-users] EMC G-Code - Calling Files I changed the ini file as you told me, but it still does not work. Some more ideas? Thorsten Am Donnerstag, den 10.09.2009, 20:12 +0200 schrieb Thomas Jager: Try setting: [RS274NGC] LAZY_CLOSE = 1 In your ini file. On Thu, 2009-09-10 at 19:54 +0200, Thorsten Seefeldt wrote: Hello, I want to call a subroutine which I have moved to a separate file. The documentation says this can be done like this: omyfile call (a named file) -- myfile.ngc omyfile sub ... omyfile endsub M2 Unfortunately this does not work. Nothing happens when the command omyfile call is executed. Can somebody please send me a working example? Many Thanks Thorsten -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Stepper motor setup and test
A 200 step motor is a good thing if you have a five pitch lead screw (like on a Bridgeport milling machine) and you want each step to be a thousandth of an inch. That's particularly true if you were back in the days of paper tape and minimal computing ability. Ken Ian R Upton wrote: Gentlefolk, I added a pointer to the shaft of the motor (like a clock hand) so I could see what the motor was doing. I then set the current and acceleration values. I then ran a series of tests at various steps/rev and fiddled the velocity until I could get stable performance (consistent counts, no erratic jumping, return to the initial count, etc). The following table shows the results, these are the maximum velocities for stable performance. Current 0.5A for all tests (emperical and from one vague reference in the Internet ) Accelleration 10MM/S^2 for all tests Step/rev 50 100 200 Max Velocity 2.9 1.7 0.9 MM/S So it looks like I have a 200 step motor... Ian -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G33 tapers
You had hexadecimal. We had to program in decimal before hex was invented. :-) (In Roman Numerals.) :-) Ken Andy Pugh wrote: 2009/9/11 Erik Christiansen dva...@internode.on.net: Meaningful variable names are the first to fifth rules of programming. Even assembler language, in the depths of last century, had 'em. No it didn't! (though some assemblers might have implemented labels, I suppose) (I remember programming in raw hex. Wouldn't want to go back to that) -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to learn movements with EMC
Letters in gcode are not case sensitive. When the standard was written, lower case letters had not yet been invented. :-) Ken Youda He wrote: I have hear but never really edit gcode, I noticed there are capital case and lower case letters, are they case sensitive? -- Youda On Fri, Sep 4, 2009 at 10:34 AM, Claude Froidevaux men...@bluewin.chwrote: Le 04.09.2009 10:43, Yann Jautard a écrit : Hi all, (sorry for my poor english, I'm from france) I'm doing a machine to apply glue for photovoltaics modules assembly. The goal is to apply a line of silicon glue around a metal frame, before assembly of the frame with the laminated photovoltaic module, and then to make a second pass to fill the gap betwen the laminted module and the frame border with the same glue. For the hardware part, the machine is very similar to lots of hobby CNCs I've read about on the internet : it's a X Y Z table, moved with steppers, and with te glue distribution system attached on the Z axis. I'm using EMC to control the steppers. And my problem is : is there any possibility in Axis, on with some other EMC GUI, to learn moves by jogging manually the machine, and taking points, then having the computer to move the machine making lines between theses points. As the moves I need to do are very simples, (just drawing a square with the glue, in fact), I think learning moves like this will be far more easy than creating Gcode. And it will be easier to adapt the moves and speeds if I have some tolerances issues with the frames or the modules. Hello, Actually, Gcode is pretty simple. (much simplier than trying to record something I thing) For you, something like this may help you to start: G21 (Unit in mm) G90 (Absolute distance mode) G17 G40 (Cancel diameter comp.) G49 (Cancel length comp.) F150 (150mm/min) g92 x0 y0 z0 (define the current position as 0, this may need to be different for you) g1 z-5(go down 5mm in Z) g1 x50(go to 50mm in X, no move in Y) g1 y50(go to 50mm in Y, X still in 50mm) g1 x0 g1 y0 g0 z0 J'habite en Suisse romande... si vous avez des questions avec linuxcnc, je vous aide volontiers. Claude -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc chess pawn part program
I've seen the behavior you describe where the program hangs with an hourglass in Axis, but not in that context. In my case, it was caused by a loop in a program that never terminated. Axis was trying to preview the program and it never terminated. Another symptom was that Axis (or the display) wanted to use the entire CPU and all of memory. I don't know if that provides a clue or not; but I thought it worth mentioning. Ken Rondal Nannie wrote: Hello I was wondering if anybody else has loaded and run this EMC example lathe pawn program? I tried to load it and it just will not load for some reason. Thanks in advance. Ron --- On Mon, 8/17/09, robert rob...@innovative-rc.com wrote: From: robert rob...@innovative-rc.com Subject: Re: [Emc-users] emc chess pawn part program run request To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Date: Monday, August 17, 2009, 6:10 PM Rondal Nannie wrote: I do not know about that, I only removed the % sign on the end of the proram. Thanks for the response. Ron --- On Mon, 8/17/09, Ray Henry rehe...@copper.net wrote: Is it possible that this is another case of editing a text file on another OS or editor that uses a different end of line code. Hi ron what ray means if if u wrtie a file on windows say and save it from wordpad it will put very funny odd things on end of line (inviable to reader, but open it in a true text editor u will see the carriage returns and new line markers as they are called) but if u made it on EMC machine using Gedit or likes it should be pretty well safe to use and give no problems. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Can I use arrays in gcode? I need to store surface profile data
now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Can I use arrays in gcode? I need to store surface profile data
Stephen Wille Padnos wrote: Kenneth Lerman wrote: Here is my first guess at how I would do this: 1 -- First, I would enhance emc to support a new M code that took at least four arguments and returned at least one variable. Lets say M999 takes arguments N, X, Y, Z. N would be the name of an external program to run (say N=123, then ExtFn123 would be run). The other variables would be passed as arguments. Variable #999 (or whatever) would get the return value. Why not enhance the existing external M-code feature so that it can pass multiple arguments (not just P and Q) to the called program, and which can get some sort of function return? The returned value could even be a string that gets parsed, so the program could return something like #999=[47.2] #998=-109 ... I hesitate to change the existing feature because I wouldn't want to break existing programs. My understanding is that the values of P and Q are assigned to the first and second arguments of the script. It makes sense to just pass the named arguments to the script in (not necessarily in the order that they occur) including the letter, the '=' and the value (after evaluation of functions). I think that parsing the returned string value is an excellent idea. That would even let you call a gcode subroutine with supplied values. 2 -- I would implement a new scan function that called M999 N=1 X=... Y=... Z=... ExtFn1 would take the X, Y, Z values and store them in some file. Probing can already do most of this, though it would be interesting to have a hook that gets called whenever a probe move finishes. This hook should receive several pieces of information, probably including start position, target position, probe trip position, and a flag or two saying what kind of probe was being done and whether it succeeded. (the success flag is redundant, but it saves comparing the probed position with the target endpoint and including fuzz, in every hooked program) Incidentally, this could be something like the existing probe log comment/commands: (PROBE_HOOK, M199 myfile.txt) 3 -- I would implement a conversion function that converted the scan file into an easily (efficiently) read format. That might be M999 N=2 (ExtFn2). 4 -- I would implement an external function (ExtFn3) that takes the arguments X and Y and returned the Z value (in variable #999). This function would use the file format described above. All of this seems pretty straight forward. I think this all remains the same using the scheme I outlined. Thanks for your comments, Steve. Since I don't have a probe, I don't think I'll be implementing this any time soon. - Steve -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Regards, Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa io card driving h bridge and counting encoders
jon doe wrote: SNIP... I see a long road ahead, but the journey should be grand, if the destination a little anti-climatic. Josh When you reach the top of the mountain, you will discover that the journey isn't over. You'll see a higher mountain just a short distance away. :-) Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] line limitation
The problem is that Axis will try to display the program and that takes a lot of time and memory. There is a pseudo comment that you can use to turn the axis display on and off in your program. Is is something like: (AXIS STOP) and (AXIS START). RTFM for the actual syntax -- I don't remember the exact commands. There is no practical size limitation as far as the number of lines is concerned. The lines are NOT all read into memory at the same time in EMC. Ken aaron moore wrote: Hi EMC I have a file with something like 300,000 line of code to cut a complicated fretwork screen divider, but EMC will not open the file. I seem to remember there was some discussion over a limit to the number of lines of code EMC can deal with. Could someone offer advice or point me to the archive. Thanx Aaron -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hostmot2 homing
Does that make sense? If the terminator is really 100 ohms, that would imply that the pull up is in the order of ten ohms. (Am I correct in my assumption that the power supply is five volts?) Ken Leslie Newell wrote: Hi Ken, Yes, this was under load. Les Kenneth Lerman wrote: Did you measure that while it was connected to the receiver? If the terminator is 100 ohms and the pull up is 1K ohms, the voltage under load would only be around 400 mv. That should be fine, I think. If the pull up is 10K, then you would have around 40 mv. I don't think that would work too well. Ken -- Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hostmot2 homing
Did you measure that while it was connected to the receiver? If the terminator is 100 ohms and the pull up is 1K ohms, the voltage under load would only be around 400 mv. That should be fine, I think. If the pull up is 10K, then you would have around 40 mv. I don't think that would work too well. Ken Leslie Newell wrote: Hi Peter, Each output swings from 0.48V to 4.1V. When IDX is high, /IDX is low. Therefore the voltage between them is about 3.6V. Les What I was asking about (maybe not very well) is differential drive: in other words measured between IDX and /IDX. This should be positive in one index state and negative in the other. -- Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] GWiz Available for Alpha Testing
I saw that you have a new list and figured I had better get the previous ones fixed. #1 -- fixed. #2 -- fixed. #3 -- Now depends on mode. If editing (edit button depressed), the selected line will be replaced. If insert mode, the paste buffer will be inserted after the current line. #4 -- If it hurts when you do that, don't do that. :-). I'll take a look at that at a future date. Keep them coming. Regards, Ken Frank Tkalcevic wrote: I'm now using 0.1.5, and set up the symlink and that is going fine. A few more bugs ... 1) If you try to save a new file, or save as an existing file, over the top of an existing .wiz file (select the file from the file selection dialog), it gets saved as file.wiz.wiz, that is, it doesn't overwrite the existing file, it always appends .wiz to the file name. 2) If you open an existing file to edit, then open another file (or the same file twice), the contents of the files keep appending to the file already loaded. 3) Copy and paste. If you copy and then paste, the paste will replace the selected line in the list at the bottom. Pasting a new line would be more helpful. 4) If the path [WIZARD] WIZARD_ROOT is invalid, the splash screen disappears, but the main window never appears. The program doesn't exit, it just keeps running invisibly in the background. About.txt doesn't appear to be used. What is the plan for this? In the wizards I have created, I have had the need to put some additional text information under the image eg - the X coordinates will be dependent on EMC's diameter/radius mode. Currently I have this as part of the image. Also, how have you envisaged the speeds/feeds being set? Is it set using the speed/feed wizard, then all following commands will use the global parameters to set the F and S commands? Should the depth of cut be in here too? For a lathe, I need to set feed rate, spindle speed and depth of cut for roughing and finish passes. There's also the option of using CSS. Do you want to standardise the names for these parameters? Have you considered how people can add and share their wizards? I see there is a growing library of .ngc programs scattered over the emc web. I was think another nice enhancement would be to support .zip files (or .tgz, ...) as a way to allow people to create and share individual wizards. It might be an easy way to share the programs, without having to put someone in charage of maintaining a database of wizards. -Original Message- From: Kenneth Lerman [mailto:kenneth.ler...@se-ltd.com] Sent: Friday, 3 July 2009 5:28 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] GWiz Available for Alpha Testing I lied about my next action. My next action was to add a conversational mode to GWiz. If the conv button on GWiz is set, hitting accept (that's the check character) after changing a wizard's variables causes it to invoke execution of the wizard gcode in the running Axis window as an MDI command. Pressing the conv button causes all of the wizards in the library to be loaded into Axis so that they are available for execution. 1 -- LAZY_CLOSE = 1 must be in the .ini file. 2 -- Axis must be in a state that MDI commands will be accepted. Out of ESTOP, running, homed, etc. 3 -- I have no idea what will happen if there is an error in a gcode subroutine. The interpreter probably needs to be changed to at least unwind the stack and get back to some neutral state. 4 -- Axis has been changed to accommodate this. You will need the development version of Axis. This is Alpha functionality. I've tested it in a Sim environment. Ken Kenneth Lerman wrote: See: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?GWiz_-_A_Gcode_Wizard_Fram ework The only thing that is remotely like a real wizard is the Holes on a Circle wizard. Feel free to write some real wizards. My next action will be to fix some of the dummy wizards that are there. Ken -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Gcode program error checking
Hi Frank, I know that MSG doesn't expand parameters. When I implemented DEBUG, which works just like MSG but expands parameters, I could have made MSG work the same way. I made a conscious decision to NOT do that. If I had done that, there was a possibility of breaking existing programs in the sense that they would not give the same messages as before. My general philosophy has been that changes to the interpreter should not change the behavior of existing valid programs. A workaround is to use DEBUG instead of MSG. A reasonable alternative would be to modify the interpreter to add an .ini variable: EXPAND_PARAMETERS_IN_MSG. If that is set to a non-zero value, parameters would be expanded. Ken Frank Tkalcevic wrote: I need to check and report errors in a Gcode program. I want to validate the parameters passed into my o-word subroutine. At the moment I am doing this... O10 if [ #initialCutDepth LE 0 ] (MSG, Invalid initialCutDepth=#initialCutDepth) M2 O10 endif but it only detects the error at run time. I can also put in a bogus statement, such as a G76 without arguments... O10 if [ #initialCutDepth LE 0 ] (MSG, Invalid initialCutDepth=#initialCutDepth) G76 O10 endif And at load time I get All axes missing with motion code, although it points to the wrong line. Is there a better way? Oh, and I just noticed that MSG doesn't expand parameters. That's annoying. -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] O-words with n-words, patch attached
For bug fixes, I would suggest the development list. For enhancements or changes to functionality that might break something, I'd suggest a discussion on the development list prior to doing the work. I'd also suggest adding a page to the wiki where significant points of discussion could be documented. As a developer, I found that methodology useful when creating named o-words. The need for documentation and discussion helped me clarify the functionality and caused me to change the syntax to something better than my original proposal. Ken Maximilian H wrote: Hello Chris, i do have more interpreter code. To whom to i submit it for discussion/review/commit ? Thanks BR Max On Mon, Jun 29, 2009 at 02:28:12PM +0200, Maximilian H wrote: The attached small patch to Interp::read_items allows o-words with n-words without changing any other behaviour (methinks). This tested OK so I committed it for you. Thanks for contributing! Chris -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Debug gcode program
I usually find that adding some debug statements can solve my problem. (debug, variable1=#1 namedvar=#this_var) The above will display values of variables. (print, variable1=#1 namedvar=#this_var) Will write the output to stdout. (or perhaps stderr -- I forget). See the manual. Ken Frank Tkalcevic wrote: Just to clarify this, it's a gcode program that uses functions, loops and conditionals. What's the best way to debug this? -Original Message- From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au] Sent: Friday, 3 July 2009 7:45 PM To: 'Enhanced Machine Controller (EMC)' Subject: Debug gcode program I have a gcode program. I loaded it into axis. It loads, but the backplot doesn't look right. How can I debug it? Is there a way to get the gcode output from it? Can I run it through the simulator? Is the simulator easy to set up? -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] GWiz Available for Alpha Testing
I lied about my next action. My next action was to add a conversational mode to GWiz. If the conv button on GWiz is set, hitting accept (that's the check character) after changing a wizard's variables causes it to invoke execution of the wizard gcode in the running Axis window as an MDI command. Pressing the conv button causes all of the wizards in the library to be loaded into Axis so that they are available for execution. 1 -- LAZY_CLOSE = 1 must be in the .ini file. 2 -- Axis must be in a state that MDI commands will be accepted. Out of ESTOP, running, homed, etc. 3 -- I have no idea what will happen if there is an error in a gcode subroutine. The interpreter probably needs to be changed to at least unwind the stack and get back to some neutral state. 4 -- Axis has been changed to accommodate this. You will need the development version of Axis. This is Alpha functionality. I've tested it in a Sim environment. Ken Kenneth Lerman wrote: See: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?GWiz_-_A_Gcode_Wizard_Framework The only thing that is remotely like a real wizard is the Holes on a Circle wizard. Feel free to write some real wizards. My next action will be to fix some of the dummy wizards that are there. Ken -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trouble with Python
Look in the file: .emcrc. The GWiz source code shows how to access this; but it is the same format as a .ini file. Use section PICKCONFIG, variable LAST_CONFIG to access it. Ken Leslie Newell wrote: Thanks Jeff, Unfortunately that raises another problem. I need to find the ini file. Axis knows this because it is passed on the command line. I think to get this tool change stuff working correctly I will need to integrate it into Axis anyway. Les Jeff Epler wrote: You need to set emc.nmlfile to the right path to emc.nml before creating the stat and command objects. This is how it's done in axis: emc.nmlfile = os.path.join(os.path.dirname(sys.argv[2]), inifile.find(EMC, NML_FILE)) hal_manualtoolchange doesn't need to do this because it doesn't use nml at all, it acts entirely through hal. Jeff -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Non-invoked Program Stop, Re: .ngc file RFReview
You might consider putting an emitter follower circuit at the output of your circuit. The NPN Darlington configuration might be appropriate. http://images.google.com/imgres?imgurl=http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/ietron/darl.gifimgrefurl=http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/emitfol.htmlusg=__YsP5vDTSAyH1_LgPZsUd4Kj7csk=h=256w=248sz=2hl=enstart=6um=1tbnid=9O8nEjwky6glcM:tbnh=111tbnw=108prev=/images%3Fq%3Demitter%2Bfollower%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DX%26um%3D1 Ken Kirk Wallace wrote: On Fri, 2009-06-26 at 14:52 +1000, Frank Tkalcevic wrote: (Other good news/bad news. I blew out the serialDAC, but had a spare chip. I'm looking for advise on how to protect the output op-amp: http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/ser ial_dac_sch.png Oops, looks like I missed the link wrap. Here is a short URL: http://preview.alturl.com/9qo4 I'm not sure if this is what you are looking for, but there was an example circuit to opto-isolate analog outputs posted on the gecko yahoo group, in Files/G100 and G101/G100 to VFD.zip. It contains a pdf schematic, as well as gerber files. Full link here... http://f1.grp.yahoofs.com/v1/wEdESqlRISAvXS1kqNpUyHreATzPsS6fyvPYjIkwCrzxcP5 sN-O39ow1eZON1_k89sEXfl4jj18PJjRgWEkX-UyxFYezazMt/G100%20and%20G101/G100%20t o%20VFD.zip Short URL here http://preview.alturl.com/8hm6 Thanks for the link, Frank. I wish I were better at electronics, then I would know what this circuit does. It looks like the op-amps only have a 10kOhm resistor on their outputs, which would limit the current going in or out of the amp. This may offer current protection but maybe not enough voltage protection. I was thinking of putting a 12 volt Zener between the op-amp output and the output ground, but I don't know if that is a good idea or not. I suppose I could just try it and see what happens. It looks like the above circuit takes in an analog input, converts it to PWM or PDM, then back to analog on the far side of the opto-isolator. I wonder how fast it is? A VFD signal might not need to change quickly, but an analog axis servo would. I also got my ATtiny2313 programmer and proto-board working, but blew both 2313 chips I had on hand the first day, with no gratuitous smoke either. I'm looking for a 2313 simulator that will run on Ubuntu so I can test programs before I try to program real chips.) I only know of AVRStudio for windows, but I find that it's simulation is pretty ordinary. I was simulating the 2313 a while back and it was missing a timer. Maybe it was just a bad install. I don't have any Windows machines so I would have to set up Wine to run AVRstudio, but it may be worth it, if I can save some burnt chips. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Using MDI during a Program?
Terry wrote: Leslie, I am not opposed to this change and if there is enough intrest in this then great. I think that a better feature would be a tool check Cutter is loading up(or whatever problem),you hit the tool check button and the machine would move to a safe location How would the tool know where the safe location is or how to get to the safe location? If I'm thread milling on a mill, I can't just pull straight up? If I'm face grooving on a lathe I have to move in one direction, while if I'm cutting off, I have to move in another. Ken and go into a pause mode.Fix the problem and hit the tool check button again and machine would go to where it was when the button was pushed(or maybe the line right before it. It would be pretty close to what an M01 would do but with a move away and back. There is going to drawbacks for this but it might be useful. Later Terry On Mon Jun 22 4:02 , Leslie Newell les.new...@fastmail.co.uk sent: Hi Terry, Having a tool presetter or not,at some point in time you have to inform the control how long the next the tool is. Of course. then you put the next tool in and touch it off, write it in the tool table in the T2 line You need to manually jog to touch off the tool. It doesn't matter if you need MDI or not, you still have to stop the program. Not sure why you bother with manually changing the tool table though. The touch off button in Axis does it for you, though it needs to be able to use MDI mode to do it. then scroll down to T2M6 in the prog and right click and hit start from here. I think that is pretty easy. Yes, but prone to errors, especially if you have a long program with a number of tool changes. It is a lot easier to simply press cycle start. Replacing broken tools goes like this for me: Groan loudly hit esc,jog out of the way,pick up what is left of the tool and throw it at the wall as hard as I can. LOL. Being able to jog halfway through a job doesn't really help with this situation. Unless you have superhuman reflexes you will still have to back up the program to the point where the cutter failed. However, where it is really useful is if the cutter starts loading up with swarf. I regularly machine sheet plastic (acrylic engraving laminate). While plunging the cutter often gets a lot of swarf wrapped around it. After a couple of plunges you end up with enough tied around the cutter to start rubbing and burning the surface of the work. You then need to pause, lift the cutter and clear the swarf. This is a production job, not hobby use. I have experienced similar problems often enough on my lathe as well. I view the developers time as super-valuable and would not like to see them spend time on this when there are other more important things on their plate. My point is that being able to jog/use MDI during a manual tool change should be a relatively trivial task that makes life a easier for a lot of EMC users. The other day I was talking to an OEM who was trying to choose between EMC and Mach. He was pretty enthusiastic about EMC until I told him you can't jog during a tool change. As far as he was concerned that was a show stopper and he went for Mach. Being able to jog during pause is not nearly as easy and would involve quite a bit of work. Les Msg sent via CableONE.net MyMail - http://www.cableone.net -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Using MDI during a Program?
https://lists.sourceforge.net/lists/listinfo/emc-users -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Using MDI during a Program?
Steve Blackmore wrote: On Mon, 22 Jun 2009 11:27:56 -0400, you wrote: Steve, It's nice to save bits, but I'd appreciate it if you left a little more leading context. --I had quoted Terry Terry wrote: Leslie, I am not opposed to this change and if there is enough intrest in this then great. I think that a better feature would be a tool check Cutter is loading up(or whatever problem),you hit the tool check button and the machine would move to a safe location -End of Quote So, my question and comment were in reference to tool check; not feed hold. How would the tool know where the safe location is or how to get to the safe location? It wouldn't, and why should it. If I'm thread milling on a mill, I can't just pull straight up? If I'm face grooving on a lathe I have to move in one direction, while if I'm cutting off, I have to move in another. Commercial controls won't feedhold on thread milling. BUT - Feed hold does just that, it stops movement. Nothing more. It doesn't withdraw, go to home, stop the spindle, make coffee or anything else. Up to the operator where he feed holds and more importantly where he positions the tool for the restart. Some controls complete the current line, some stop mid move, modern controls then allow the operator to step out of the program and do whatever. Steve Blackmore -- -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Named o-words possible bug/interpreter problem
SWPadnnos is correct. The only work around is to use a numbered o-word. Adding string variables would be considerable effort for relatively little payback. Ken Stephen Wille Padnos wrote: Alan Condit wrote: I think that I may have found a bug in the interpreter (at the very least a problem). This call works to call (indirect) o600 from within oCallSubSub oCallSubSub call [600] [-0.1161] [-0.0062] However, if you change to named o-words, then this call reports a bad number format (since it is not a number but the name of the subroutine to be called). oCallSubSub call [CutOutside] [-0.1161] [-0.0062] Is this a bug? Is there a work around at the moment? This isn't a bug, and there is no workaround as far as I know. The issue is that variables are numbers, not text strings. You can indirectly call a numbered subroutine because the variable is converted into a number before the call is made, and the interpreter expects a number for a subroutine call (names were only added in the last year or two). The only way to make this work the way I'm thinking you want it to work is to add the ability for variables to contain strings. This would be a nice feature, but I'm not sure how hard it is to add. - Steve -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] GWiz Available for Alpha Testing
See: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?GWiz_-_A_Gcode_Wizard_Framework The only thing that is remotely like a real wizard is the Holes on a Circle wizard. Feel free to write some real wizards. My next action will be to fix some of the dummy wizards that are there. Ken -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mill-Drill needs steppers and servos?
If you are planning on building a gas fired forge, you should look at: Recuperative Gas Fired Forge Furnace, by Robb Gunter, et al. (Published by: ABANA). Ken Marty Swartz wrote: Never mind, Google is indeed my friend. Gas Burners for Forges, Furnaces, and Kilns Skipjack Press, Inc. (February 2004) ISBN-10: 1879535203 ISBN-13: 978-1879535206 - Marty -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] .ngc file RFReview
Kirk Wallace wrote: In case anyone is interested, I have an .ngc file that I'll probably run tomorrow, but if anyone finds anything that might improve it, I would appreciate hearing from you. Thanks. http://wallacecompany.com/machine_shop/EMC2/ngc/encoder-100ppr-4c.ngc Without reverse engineering the actual slot angles, etc, it is difficult to really *know* what the code does. Assuming though, it is intended to do what the AXIS backplot shows it is doing, the code can be greatly improved. Just to be sure, I'm going to start by stating what I think the intention of the code is. The code mills a disk. The disk has a center hole and twenty-five radial slots. The slots have equal size and spacing. The spacing is different than the slot width. I would start by defining what I want to do as a gcode subroutine: See: http://pastebin.com/m7803d6eb for an outline -- reproduced, below. 1. (helper function to mill a single slot) 2. (#1 - angle) 3. (#2 - slot width in degrees) 4. (#3 - radial distance from center to edge of slot) 5. (#4 - radial length of slot) 6. oencoder_MillSlot sub [#angle] [#4] [#5] [#6] 7. (...code to be supplied) 8. oencoder_MillSlot endsub [#angle] [#4] [#5] [#6] 9. 10. (Mill an encoder disk) 11. (#1 - outside diameter) 12. (#2 - hole diameter) 13. (#3 - number of slots) 14. (#4 - slot width in degrees) 15. (#5 - radial distance from center to near edge of slot) 16. (#6 - radial length of slot) 17. oencoder sub 18. #N = #3 19. 20. (mill the outside) 21. (...code to be supplied) 22. 23. (mill the central hole) 24. (...code to be supplied) 25. 26. (mill the slots) 27. #cnt=0 28. oslotLoop while [#cnt LT #N] 29. #angle = [360 * #cnt / #N] 30. oencoder_MillSlot call [#angle] [#4] [#5] [#6] 31. oslotLoop endwhile 32. 33. oencoder endsub If you write something like this, it will be useful for all of us. Things that you might consider adding to the general outline: 1 -- cutter diameter (to user cutter compensation) 2 -- depth of cut 3 -- an arbitrary center (I've assumed the center at (0,0)) 4 -- roughing and finishing passes and specs for them Ken -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
Rainer Schmidt wrote: As I understand the parsing G1z1x1y1 is the same as g1z1 x1y1 or g1z1x1 y1 or g1 z1 x1 y1 I am sure that a end of line or cr/lf or any combination is not part of the parser rules regarding a command structure. I have generated gcode which has no line breaks in 4MB of gcode. But that runs under mach3... That is certainly not the case with EMC; and RS274NGC specifies a thing called a block that corresponds to a line in EMC. The maximum length of a block is 256 characters (or maybe 255). My understanding is that: g1 z1 x1 y1 is NOT the same as g1x1y1. g1 does coordinated motion. That means it moves in a straight line from its current position to its target position. The line with just the x1 on it is equivalent to g1x1 because the interpreter remembers the previous g1 command. - Ken - g1z1 g1x1 g1y1 are the same as g1z1g1x1g1y1 I'll verify that a bit later when I am in the shop. Rainer On Fri, Jun 12, 2009 at 10:12 PM, Jon Elsonel...@pico-systems.com wrote: K.J. Kirwan wrote: Hi all, Wait, are you sure this is a bug? I don't know how the motion controller works in EMC2 as far as its in-position system. I don't see any .ini parameters listed to set in-position tolerances. (Q: What *are* EMC2's in-position tolerance settings, and how are they adjusted if not in the .ini file?) It is not in the .ini file because there is no in position tolerance. There is a following error tolerance, but that causes a program abort. EMC does not wait for an axis to be in position before continuing. But in the case of allowable following error, if the machine is moving with sufficient velocity, the allowable following error should ramp up from the low end MIN_FERROR= (Integrator manual shows as .010 default) to as high as FERROR= (Integrator manual shows as 1.0 default) (See Integrator Manual, Chapter 7.2.9, page 34) It DOES have asliding scale for following error. Could something like this be happening (normally) with the in-position tolerance values? If the machine has ramped up to max speed, and the next line does not slow things down (even if direction changes), then maybe in-position is reached as much as an inch early and the next motion (quite properly) begins? EMC2 computes how far before the end of a move it needs to decelerate based on velocity and the max_acceleration parameter for that axis in the .ini file. As soon as the currently moving axis begins its deceleration, the next axis to move will begin to accelerate when in G64 mode. In G61, that is defeated, and the move must be completed before the next move starts. Jon -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Let's Try to Stay on Topic
Assume gentle voice... This list is called emc-users. AFAIK, it is not emc-users bull session. While much of what has been written about apprenticeships, metric vs imperial, and other such subjects is interesting, it is a distraction from the subject of the list. If we could all try to stay on topic (and I include myself), it would help keep us all productive. I've received 24 messages on this list today and it is still early. Thanks, Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] .ngc file RFReview
Nice job, Lawrence. When I get GWiz into good enough shape to release, I'd like to be able to steal your code and make a wizard out of it. Would you consider GPLing it? Or better yet, releasing it to the public domain. I say better yet because then you can just add a single line comment: (Released to the public domain by Lawrence Glaister.) That seems easier than the multiple lines for the copyright notice plus the GPL license reference. Some changes I might make: 1 -- Use named o-words, instead of the numerical ones. -- That's a relatively new feature. 2 -- I think I would have put the index slot on the inside of the main slots, instead of the outside. That way you need only one long reach opto. When converting it to a wizard, I would make that an option. 3 -- I would make the actual wizard a radial slot wizard. Then to do the encoder, you would invoke the following: A -- A radial slot wiz to do the index slot. B -- A radial slot wiz to do the main slots C -- A bolt hole circle wiz to do the mounting holes D -- An outside circle wiz to do the outside perimeter E -- An inside circle wiz to do the inside hole. Of course, one could make a super wiz to do the whole thing. Ken Lawrence Glaister wrote: Hi Kirk, Looks like you have been having fun in gcode. One thing you might want to consider for an encoder wheel is to make the cutouts the same size as the solid areas to get as close to a 50% duty cycle on the detector(s) as possible. You didnt say if you were just using the wheel for a pulse generator or a 2 channel encoder. You might also consider adding another hole for an index detector if you need that. Along a similar line, you can check out a lathe spindle encoder I built a while back. The gcode program can be adjusted to make an encoder of any number of pulses. If you are using slot source/detectors, you have to make sure the holes in the disk can be reached. cheers... post a picture when you get it made! Lawrence http://members.shaw.ca/swstuff/spindle-encoder.html http://members.shaw.ca/swstuff/spindle-encoder.ngc On Fri, 2009-06-12 at 22:22 -0700, Kirk Wallace wrote: In case anyone is interested, I have an .ngc file that I'll probably run tomorrow, but if anyone finds anything that might improve it, I would appreciate hearing from you. Thanks. http://wallacecompany.com/machine_shop/EMC2/ngc/encoder-100ppr-4c.ngc -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emc.nbl
Stuart Stevenson wrote: Gentlemen, Sorry about the dsyelixc command line. :) I think it is the result of old age. Today is the marking of another year. Wish me happy birthday. I am 56 today. thanks Stuart Happy birthday, Stuart. You look pretty good for 65. (Pardon my dislexia.) :-) Ken On Fri, Jun 12, 2009 at 8:04 AM, Stuart Stevensonstus...@gmail.com wrote: Gentlemen, This is the return from the command line start. stus...@stustev-laptop:~$ emc2-trunk-sim/scripts/emc EMC2 - 2.4.0~pre Machine configuration directory is '/home/stustev/emc2-trunk-sim/configs/vismach' Machine configuration file is '5axhydrotel.ini' Starting EMC2... libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory libnml/nml/nml.cc 368: NML: cms_config returned -1. ** * Current Directory = /home/stustev/emc2-trunk-sim/configs/vismach * ** * BufferName = toolCmd * ProcessName = tool * Config File = emc.nml * error_type = 0 (NML_NO_ERROR) emcToolCmd buffer not available libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory libnml/nml/nml.cc 368: NML: cms_config returned -1. ** * BufferName = toolSts * ProcessName = tool * Config File = emc.nml * error_type = 0 (NML_NO_ERROR) toolSts buffer not available libnml/cms/cms_cfg.cc 621: cms_config: can't open 'emc.nml'. Error = 2 -- No such file or directory ** * BufferName = emcError * ProcessName = tool * Config File = emc.nml * error_type = 3 (NML_INVALID_CONFIGURATION) emcError buffer not available can't connect to NML buffers in emc.nml 5axhydrotel.hal:31: execv(5axhydrotelgui) failed 5axhydrotel.hal:31: 5axhydrotelgui exited without becoming ready Shutting down and cleaning up EMC2... emc2-trunk-sim/scripts/emc: line 386: emc.nml: No such file or directory Cleanup done EMC terminated with an error. You can find more information in the log: /home/stustev/emc_debug.txt and /home/stustev/emc_print.txt thanks Stuart -- you can lead a person to knowledge but you cannot make him think -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successive G0 moves
It seems clear to me that the described behavior is a bug. You should file a bug report. Ken Rainer Schmidt wrote: On Fri, Jun 12, 2009 at 6:24 PM, Shabbir Hussains_hussai...@yahoo.com wrote: G0 should not be used for cutting. It is only for positioning when the tool is at safe Z height (out of workpiece and clamps etc.). I have worked with Fanuc and Siemens controllers. In these controllers when G0 move is programmed, all the axis used in G0 move starts moving at rapid feeds (set in the parameters of the controller) and the axis that achieve the position just stops and others continue to run. So G0 move produces a non-linear move. This is normal behaviour. So G0 move should finally achieve the target position not the linear path. That is why it must be used for positioning. Thanks Shabbir Hussain Would G0Z10 G0X5Y8 Posiiton Z first and then x and y? I did not spend to much thought about this and find this thread potentially disaster avoiding... Rainer -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 G-code Math
Kirk Wallace wrote: Where does the math software used in g-code come from? In other words, does anyone have links to more information on the g-code math functions? Among other things, I would like to know if there is a pi function, or do I need to use *3.14159265358579.? Thanks for any help. There is no pi function. And since angles are in degrees, you can't use the 2*arcsin(1) to get pi. Ken -- Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] GWiz Needs a Logo
I need a splash screen for GWiz. My thoughts are Tux with wizard hat and maybe some EMC relatedstuff. I also need a small icon to stick in the upper left corner of the window. If there is someone out there with some artistic skills who can create these, I'd appreciate it. Thanks, Ken -- Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, Big Spaceship. http://p.sf.net/sfu/creativitycat-com ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Touch off / workpiece home coordinate
I don't know which version you are using, but judging from the message it appears that there is an interpreter bug. There is a table in the interpreter that contains pointers to the functions that implement the gcodes. The actual gcode number is multiplied by 10 to determine the index in the table. So, G5.2 goes in the 52nd slot and G5.3 goes in the 53rd slot. You can imagine how 5.3 and 53 might get confused with each other by a simple off by a factor of ten bug. That's just a (somewhat) educated guess about the problem. Ken Rob Jansen wrote: Tom, The G53 command results in the following error: interp_error: Can use only G5.2 or G5.3 after G5.2 Is this a bug? - There is no G5.2 or G5.3, only a G53 and the manual does not mention any dependencies on G53. I also read the information on G92 - it sets global offsets and affects all coordinate systems. That's why I had problems understanding the touch off ... G53 not working is too bad, but for now I'll use coordinate system 1 (G54) as absolute system. That still gives me 8 fixtures to define which should be just enough ;-) Regards, Rob On Thu, Apr 30, 2009 at 9:07 PM, Tom kestrel...@yahoo.com wrote: In MDI: Move to the machine origin. G53 G0 X0Y0Z0 (A0B0C0) Clear the G92 coordinate offset.G92.1 Use the G54 coordinate system. G54 Set the G54 coordinate system to be identical to the machine coordinate system.G10 L2 P1 X0Y0Z0 (A0B0C0) (watch the screen (in Axis) when you do this and you'll see the work offsets move to the machine home position.) Turn off tool offsets. G49 Turn on Relative coordinate display from the menu -- Register Now Save for Velocity, the Web Performance Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Register Now Save for Velocity, the Web Performance Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
Get a tapered end mill. Ken Stephen Wille Padnos wrote: Tom wrote: Steve Blackmore st...@... writes: Hi Tom - can't you remove them with a full depth finishing cut? Distinct edges like that are stress magnets ;) Steve Blackmore Hi Steve, Those are tapered walls. The contours for those pockets are about 50 thou inset at the bottom of the pocket, so the walls are that much thicker down there. It might be worth investigating using a 3/8 endmill with a 1/16 radius end. That would give some gradation to each Z level step, plus the bottom cut would have the full radiused corners. What you need is a 5-axis mill :) (nice stuff, by the way) - Steve -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Can you spell product liability insurance? I consider that to be an expensive, but necessary evil. Finite element analysis, fatigue testing, and destructive testing might also be useful. Ken Dave Engvall wrote: On Jan 15, 2009, at 10:38 AM, Tom wrote: Jon Elson el...@... writes: snip... This is for a ** V8 ** bike? Is this a showpiece, or something somebody is going to ride a lot? The milling of parts like this tends to leave sharp inside corners that worsens the problem. You might be able to get a stronger part by using a bull-nose end mill to get rid of the sharp corners. Jon Hi Jon, Yes my customer is making 10 more of these trikes, there are 6 or 7 currently in his shop. Yes, they get ridden quite a bit, as they handle really well, and are very comfortable to ride in for days at a time... not to mention super- fun fast;-) I agree re: radiusing the inside corners. I might possibly even get rid of the lightening pockets altogether, since the sum of weight saved would amount to only 10 oz or so - this is a heavy trike anyway. (See my response to Gene's comments) Tom 7075 only buys you something in bulk parts. I have no idea where the division between bulk and thin wall comes. I'm not so concerned about dynamic stress as I am about fatigue cracking. Decent radii on the corners will certainly help. One trick is to machine the part out of plexiglas and then heat to stress relieve. Then stress the part and view with polarized light; one can see the stress points and engineer the design to compensate from that knowledge. Boeing used a lot of 4340 and 300M for critical parts. Good luck. Dave -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Software question
For my use and for (as far as I can tell), almost everyone else, it is unnecessary. It is also complex. Ken paul_c wrote: On Wednesday 07 January 2009, Kenneth Lerman wrote: NML is used because it supports an environment where functions are split across multiple machines. I don't know how widely that functionality is used, though. As far as I'm concerned, it adds an unnecessary level of complexity. Please define unnecessary ... complexity within the context of emc2. -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] NOMINATION -- Stuart Stevenson
Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Software question
I'll take a shot at answering number 3. Richard F. Amaral wrote: Could someone explain or point me to documentation that explains the following: ... 3. Why use NML? Why not use just shared memory? Is NML an attempt at standardizing communication between software entities, i.e. user-kernel, user-user, kernel-kernel? NML is used because it supports an environment where functions are split across multiple machines. I don't know how widely that functionality is used, though. As far as I'm concerned, it adds an unnecessary level of complexity. Thanks for your patience in advance. -Rich ... Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: PDP11
tomp wrote: ... Collosal Cave you are in a twisty little maze of passages :) all alike or all different? TomP -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Ethernet, rtai, and rtnet
Jon Elson wrote: Kenneth Lerman wrote: Jon, Don't use rtnet. Just use ethernet point to point to replace a parallel port. Then there is NO net stack. Just use raw ethernet packets. Overhead is then a few dozen bytes. OK, but is there an ethernet driver that is callable within the rt environment? I may have missed such a thing, but I'm not aware of it. I would think (always a dangerous activity), that if there is a rtnet driver available within the rt environment, it could be stripped to just the lowest level. Ken Jon -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Ethernet, rtai, and rtnet
Remember that the issue on ethernet will not be throughput; it will be latency. I'm sure Jon can give you a profile of what he is doing. How many bytes in a send packet? How many bytes is a receive packet? Cycle time? I assume it would be acceptable to do something like: 1 -- Receive M byte packet 2 -- Compute 3 -- Send N byte packet Do it all over again. Vary the number of times per second you do this and see how fast you can go with differing compute cycle loads. If Jon provides those numbers, you will have a useful test case. Running that and recording CPU utilization should pretty much tell the story. Ken Jon Elson wrote: Kent A. Reed wrote: The trouble is, I'm certain enough of myself to believe I can successfully lash up some computers running rtai/rtnet and exchanging messages on a private ethernet segment (probably just round-tripping packets in the first instance, so I could get a sense of the latency involved), but I'm uncertain how I would relate this to EMC2. This uncertainty arises because (1) I don't see in my reading of the mail archive that there's any agreement on the protocol we'd want to use over this real-time communications channel so I don't know what I could implement that would resonate with or help others; and (2) I don't see any performance requirements or success criteria articulated for it, so I don't know how to do truly meaningful testing. What I'd like to do is make up a board using one of the Arm7 or Arm9 processors with built-in 10/100 Ethernet and connecting to my servo/stepper controller boards with some parallel I/O pins. The PPMC driver (hal_ppmc.c) already build up packets of a sort to read all info from the board, compute new velocities and then output a packet to the board. The scheme would be an outgoing packet had a map of register locations to read/write, and for the reads, a response packet would be sent back to the PC with the register contents in the order in the map. First, I have no idea whether rtnet is compatible with the Arm7/9 Ethernet hardware, or how much hacking would be required to the already existing protocol stack to make it compatible. As for performance, the current driver and PCI parallel port hardware can do about 1.2 MBytes/second, so a full 4-axis servo cycle can take under 100 us. With motherboard parallel ports and slower CPUs, or 8 axes, it can be up to 150 us. Unless there is a LOT of overhead either on the rtnet side or the ARM side, it doesn't look like it should be very hard to beat those numbers! I just don't have the time to dig deeply into this right now. I know what I describe above is a very specific thing for a specific board manufacturer, but if somebody were going to dig into this, I'm sure that much of what was developed could be used in other HAL drivers. Jon -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Ethernet, rtai, and rtnet
Jon, Don't use rtnet. Just use ethernet point to point to replace a parallel port. Then there is NO net stack. Just use raw ethernet packets. Overhead is then a few dozen bytes. Ken Jon Elson wrote: Stephen Wille Padnos wrote: I don't know the specifics of how to deal with the incoming packets on the PC (or the specifics of how to send them, for that matter :) ), but I'm pretty sure data throughput won't be an issue. Latency is unlikely to be either, unless there's some very complex packet reception mechanism on the PC which can't be worked around. That's one of the things that worries me, I have no idea how much overhead there is in the net stack. Also, rtnet imposes time slots for each node, and some kind of timer that tells each node when its time slot happens. The master node sends a sync packet every so often, and the slave nodes keep time off that. I'm not sure rtnet was designed at all for the kind of VERY tight coupling we are envisioning here. Of course, rtnet exists, but you then have to make the embedded slave nodes have a matching protocol scheme in their stack. Really, for what I wanted to do with it, I don't WANT the message slot scheduling, the HAL driver would be the master, and the slave would only send (immediately) when commanded to. But, of course, it needs access to the net hardware from the real time environment. Jon -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Gcode Newbie Question - repetitive part making
Hey Ed, Once upon a time, I wrote some gcode subroutines that, given the ends of two lines and a radius, makes it into a line, an arc of that radius, and a line. If you want to see it, I might be able to locate it. Regards, Ken Ed Nisley wrote: if Ed will be continuing similar articles in the future That's the plan! The Winter 08 column deals with fillets on internal corners: using cutter comp and figuring the arc centers for mostly right-angle corners. Pretty easy once you see it. Next up: finding the centers when the sides aren't at right angles. Time to haul some trig functions out of the closet, blow the dust off, and fire those devils up. So many topics, so few issues... -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Insulation (way OT)
Gene Heskett wrote: ===snipped But I'm about frozen out, I can't work wood in that variable an environment, its not insulated well enough to heat effectively. Warpage is the keyword, I can't keep ahead of it. Nor can I apply finishes at 40F, the best I could do yesterday when I said to heck with it. Get over this *%^$# cold, and start insulating it I guess. Bring money I would use for toys. 2 styro is now almost $30 a sheet around here. The 2 Blue stuff seems to have disappeared, and I recall it was rated about double the R that the styro stuff is. 1 sheet does one 2x6 worth of wall when cut in half and stacked 4 thick, and there is 56 feet of walls=28 sheets, with some leftovers to start on the 16x24 ceiling. I figure about 40 sheets to do it right. $1600. Add another kilo for installed heat. It will wait for warmer weather thats for sure. :( ===more snipped= Gene, I seem to recall that fiberglass is less expensive than foam and provides better insulation. Throw some drywall (also pretty cheap) over it and it's protected. Of course, the drywall weighs a ton, but you're young and strong. :-) Ken -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Pluto-P
Hey Peter, You don't happen to have an ethernet interface IFDEFed out there too, do you? Ken ..snip.. I doubt the Pluto has enough gates for a decent serial interface along with good set of peripherals. It could be done with our 7I43 though. Its just a minor change from the USB-HostMot2 firmware to interface to a internal UART instead of the USB data. I think our parser code has a UART interface IFDEFed out at the moment. But the real problem is using it. Other than (upcoming?) Modbus support, I dont think there is any support for serial interfaces in EMC. Regular PC RS-232 serial ports are probably too slow for most real-time tasks anyway at about 90 uSec per character (10 bits 115200 baud)... ..snip.. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] general control thoughts
Mark Wendt (Contractor) wrote: At 09:55 AM 11/28/2008, you wrote: Gentlemen, ... snipped ... The application of EMC2 to many and various projects (not just real time) would lead to a clearing of the 'real time geek fog' surrounding this type of project. We need to take the IFM button off the keyboard. IFM is It's [EMAIL PROTECTED] Magic. I have an IFM button on underneath side of my NCL keyboard but it is needed and useful there. :) Having some fun now. thanks Stuart Stuart, Back in my USAF electronics technician days, we called it PFM. P stood for Pure. ;-) If I remember correctly there was an adhesive that came out back in the late 80's/early 90's kinda like Goop, and the company called it PFM! I'll have to remember the IFM acronym though. I like that one too. Mark IFM = Indistinguishable From Magic. See: http://en.wikipedia.org/wiki/Clarke%27s_three_laws Ken - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] general control thoughts
I think the easiest way to do this is for a point to point network or even a network with a hub is to use raw ethernet packets. An ethernet packet has a payload of up to 1500 bytes. That should be large enough for most things we would want. On top of the payload we have around 20 bytes of overhead, including a CRC. I think we could come up with a simple polling protocol. The EMC machine would be the master. To me, the thing that needs the most thought is how to build a generic HAL component to handle this. It is the same problem that SWP and I discussed at Fest regarding Modbus. Ideally, you could have a configuration file for the driver that specified the devices (in the case of ethernet if would be by MAC address) and how to map HAL pins to channels on the device. We would need to have a comprehensive set of signal types. There is a decent amount of work involved in spec'ing this out. Offhand, for inputs, I see things line single bit, multi-bit word input, signed word input, counter input, counter that resets on read input. I would make words all the same length; at least thirty-two bits, but possibly sixty four bits. The fact that the transmission time is very small makes that reasonable. Enough, for now. I don't think I have the time to really work on this now. Ken Jon Elson wrote: ... RTnet has already done much of this. I'm not sure of the details, but there really are only about 5 or so different ethernet chips that are built into PCs. Then, of course, there is the question of what to put on the end of the ethernet. Something like Jon Elson's boards would be nice. Something that you could expand with lots of switch and relay interfaces would make many people happy. Yeah, I've been looking at this for some time. The problem is that the time-sliced ethernet protocol that Ulrich Marx came up with requires some serious changes to the protocol stacks on the target devices as WELL as on the host. rtnet takes care of the host end, but you are on your own to build a tiny real-time scheduler so the target device can place its transmissions in the correct time slot. Really, rtnet is not needed for this purpose. Assuming a totally dedicated network card, and a request/response form of device control, none of this time slice allocation is actually needed. EMC sends a request to read encoder counts, computes new velocitioes and send them out. So, it sends a request packet, gets a response, sends a command packet and maybe gets a done response, or maybe we don't even bother with that response. I was thinking that the request packet would have a map that specifies what target device registers should be read. Something like : 0 12 -- read 12 consecutive registers starting at address 0 14 3 -- read 3 regs starting at addr 14 0-- done And, you'd get back a response packet with 15 bytes of data. This could be fit into the framework already built for my boards that enumerates the boards, detects options and rev levels, etc. I don't know how simple it would be to dumb down rtnet to work with a standard target device with a standard protocol stack. Maybe rtnet wouldn't care if the target device answered out of order, as long as there are no collisions, which this scheme would not permit. I believe such a scheme would be a GREAT improvement for my boards, allowing us to get past many of the parallel port quirks as well as permitting a substantial speedup in the protocol. But, I don't really have the time to do all the research on my own. If somebody had a simple real-time driver for the ethernet chips that didn't require a lot of special changes to the target boards and protocol stacks, or if it could be determined that rtnet could be made to work without those changes, then I'd like to try experimenting with it. Making up a board with one of the ARM7 CPUs with ethernet and putting together a program to read/write to my existing boards would be a small project. Jon - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two
Re: [Emc-users] Friction compensation
For some reason, I think I recall feed forward as being useful for friction compensation. Does that make any sense? Ken Jeff Epler wrote: At present, emc2 doesn't have any friction compensation. However, there are several avenues you might go down to add it: in the motion controller, or as a HAL component. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Named O word subroutines not working
I believe that Jeff is correct. My recollection is that the reason for the screwed up number in the error message is that the number is a pointer to the string containing the named o-word. In the process of incremental implementation, work was done on the code before some of the error conditions. I believe that in the development version, the error messages have been fixed. If not, filing a bug report is the only sure way to see that the existence of a bug isn't forgotten. Regards, Ken Jeff Epler wrote: As far as I can tell, named subroutines aren't in 2.2.x. (they're in the development version, and your test program works there) However, I'm not sure why you don't get an error at the first line with o. That should be fixed to give a clear error message instead. Jeff - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] I J code
If you (or anyone else) decide to change the interpreter, I think you should add a parameter to the ini file supporting IJ_MODE_ABSOLUTE = 1 so that the same interpreter will support both modes. Ken Chris Radek wrote: On Sat, Nov 08, 2008 at 04:53:58PM +0200, Dave Houghton wrote: Hi I have some Gcodes where the I and J are in absolute coordinates, EMC2 seems to like I and J in incremental coordinates, is there a simple way, or something that will enable EMC2 to read these Gcodes. Regards Dave No, sorry, there is no provision for that. You would have to change the interpreter and recompile. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [EMC-users] Free 3D CADs on Linux WAS: BRL-CAD
Hi Gene, I don't know how it is now, but fifty years ago, a high school kid with a copy of a study guide could pass the test for a first class phone license first try. I never did use the thing. :-) Ken Gene Heskett wrote: On Wednesday 05 November 2008, Jon Elson wrote: Gene Heskett wrote: And that should be tested in court, soonest. I may not be a registered PE engineer, and I don't know where to hit the boiler with a hammer to make it work again as in that joke, but I am very well respected as an engineer in my field, broadcasting. I have a grandfathered to general, formerly a FCC 1st phone license, and I am a C.E.T., registered in Nebraska as #118. If I should become the Chief Engineer at some tv station in MO, I will not stand idly by and be prosecuted for claiming to be what I have been doing for a living since 1964. You have a FEDERAL license to practice your art! The states CANNOT touch you, period! And, your license even STATES you ARE an engineer, so you can hang you shingle as proudly as an doctor, DDS, etc. Jon Strangely, the commish doesn't call us engineers any more, but operators, with the chief being required to have a letter of appointment from the Owner or GM appointing him the Chief Operator. This is how the commish establishes the chain of command when cites are issued. We are the person responsible for technical compliance, and I have used that fact to tell the GM he can't do such and such even if he does sign my paycheck. Its taken a copy of 47CFR tossed on his desk a couple of times, but that's to be expected when dealing with sales types I guess. :( That C.E.T. certificate and wallet card says that I do know what I'm talking about with a lot more validity than the fcc's General Radio-telephone license does AFAIAC, that test is much much more technical than the old 4 part 1st phone test, it was 2 parts law and 2 parts simple technical. Kalifornia for instance requires that the owner of an electronics service business also be a C.E.T., and this weeds out 90% of the fast buck folks. But I've not noted a general trend in that direction for most states. That stands for Certified Electronics Technician, and is part of the National Electronics Association for admin purposes. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Some hints for a new (but enthusiastic) user?
A wiki entry is ALWAYS appropriate. If it isn't in writing, it doesn't exist; and a wiki entry is an easy way to put it in writing. :-) Ken Chris Morley wrote: Stuart: This question seems to come up a fair amount wonder if a wiki entry is appropriate? :) What is your opinion of this technique now that you have tested it for a while.? Go to http://www.mpm1.com:8080/GandL/configs/18_Feb_2008 and look at the .ini file and the file the .ini file calls in the hal section. They show how to combine the position feedback from two sources. With your explanation of the machine you want to build I would suggest looking at pumakins also. Pumakins may be closer to what you want. _ - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Stg 1 homing
Hi Dave, I'm sure someone will correct me if I'm wrong; so here goes. The way index homing works is that after the homing switch actuation is detected, the next index pulse sets the home position. If, by bad luck, the edge of the index pulse is right at the switch edge, a little jitter might cause it to be missed. Then the next index pulse will be considered home. Let me guess. The distance between index pulses on your machine is .531-.505 = .026. So I would say the distance is 25 thousandths. The solution to your problem is to move your home switch by around 12 thousandths. Ken Dave Engvall wrote: Hi all, Finally found a 'roundtoit'. As a quick test of homing repeatability I mounted a piece of 6061- T6 in the vise, wrote a small program to move from homing position to the workpiece and then drill a 1/2 hole using a 0.500 carbide endmill. Hole 1 was drilled repeatably after a shut down and restart of emc including homing. As a check I drilled hole 2 only one time. Hole 1 x = 0.531 y = 0.506 Hole 2 x = 0.505 y = 0.506 Using a dial indicator I checked the repeatability of Z home. It was within a thou using a Enco 1 indicator. If this gets serious I will use a better indicator however I don't see a problem with Z. So ... back to the X axis. Fire up halscope.. monitor axis.0.home-state, axis.0.index-enable and Xindex. These may not be the correct variables to monitor but they looked like a good start to me. when axis.0.home-state goes to 16 both axis0.index-enable and Xindex go to 1. axis.0.home-state has a series of increasing values 0 4 then shortly 5 11 the shortly 12 and finally 16. What else do I need to look at? I did not do the obvious and try the same variables with halscope on either Y or Z. Duh! Only thought about it after I had shutdown everything. Hope this is enough information to diagnose the problem or recommend more troubleshooting. Thanks in advance for any help. Dave - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Axis question
That depends on the type of machine you have. On my Bridgeport clone: 1 -- Hit feed hold 2 -- Lower the knee 3 -- Replace the tool 4 -- Raise the knee 5 -- Continue Not worthless to me. Ken Steve Blackmore wrote: On Sun, 12 Oct 2008 12:09:41 -0600, you wrote: I wish I had a memory like yours :) All this time I thought Steve was asking about Feed Hold... I was, but a feed hold that allows nothing else is pretty worthless ;) Steve Blackmore -- - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] No version for nano2count found
Why would you want a puppy based system? What advantages does it have for the general user? Why should we support it? Ken Евгений Александрович wrote: Hello I still try to build puppy base system. Now I have problem on system start rtapi: No version for nano2count found: kernel tained. Is it problem or just information message? If it is a problem, what could be wrong? Best Regards Evgeny - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Axis question
I guess I don't know why this would be difficult to implement. For trivkins based machines, I would think that one could do all of this in HAL. While the program is paused, it should be possible to use some adder blocks with input from special jog blocks to cause the position to change based on input from some VCP buttons. The spindle could be stopped using VCP buttons. After the tool is changed, the X, Y could be restored to the original positions. A Z axis offset could be left in place. I've never done anything with HAL, but from what I've seen, this should be pretty easy. It might look a little (or a lot) kludgy, but the functionality should be easy to get. What am I missing? Ken Jon Elson wrote: Steve Blackmore wrote: On Sat, 20 Sep 2008 19:23:04 +0100, you wrote: Axis usability. Two things spring to mind, in feedhold, if you damage an insert, how do you replace it? In Mach, I'd feedhold, jog away, replace the insert then press cycle start and the machine would carry on, I have the choice of from exactly the same position it stopped in, or anywhere else as a safe move. Secondly, on my router I don't use tool tables, it's not practical as it uses collets and there's no stop to make most tool positioning repeatable. I also use CAM and it programs the corrected path for tool diameter, so there's no real reason to. My normal method is touch off tool 1 and zero all axis, run that tool, when Mach pauses for next toolchange, I jog upwards, change the tool, jog back down until tool touches and re-zero Z, then press cycle start again and off it goes. Is the above possible in EMC? No comments? - I'm disappointed. Yeah, this has been a traditional problem with EMC. Forever. In the middle of a program, you can pause and then continue. But, there really is no provision to pause, make a manual move, and then continue with the program seamlessly. I think you can't alter offsets, either, while paused, but maybe you can. After making any manual moves, you have to know the G-code block to restart from, search for that line in the G-code display window and click the start from line button in the menu. EMC2 does scan the entire program to make sure it is in the right mode for the line it will start from, except it won't start the spindle, so you need a manual override. Jon - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Slow down until stops and goes during a curve
John, He must be from a country where the thousands separator is '.' instead of ','. So speed is actually 12,000 mm/min. Ken John Kasunich wrote: Jimmy Schneiderman wrote: To All, I built a Mill CNC with the 30m (X) x 6m (Y) x 4m (Z). The CNC was using a controller for 3 axis and it were working fine. My decision to change for LinuxCNC is in order to use 2 new axis that the older controller did not support. Server motor is connected thru 2 *MOTENC-Lite*http://www.vitalsystem.com/web/motion/motionLite.phpPCI boards from Vital System. Speed is 12.000 mm/min in a straight line. During milling at 4.000 mm/min, when it comes to a curve the speed slow down to 2.000 mm/min. When making a 1 meter circle the speed does not top 2.000 mm/min and it does not move continues. It stops and goes several times, shaking all the structure. If anyone has any idea what parameters should I change, please let me know. Regards, Jimmy Please post your configuration files at pastebin.ca or a similar site, and post a link here. Your numbers describe a machine that is definitely out of the ordinary. A 30 meter long axis, and you cut at 4 millimeters per minute? That means 5.2 days to get from one end to the other. I hope your rapids are a lot faster than your cutting speed. Even if you can't post all of your config data right away, post your velocity and acceleration settings here. How well did you tune the servos? Regards, John Kasunich - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Perpendicularity of a mill's axes
For the XY axis: First bore four holes in a rectangle as large as you can make it. You want the rectangle to be close to a square to get the most accuracy from this. Insert dowels into the holes. Now measure the lengths of the diagonals using a caliper if you have one large enough. If not, take a stick and bore a hole in one end to fit the dowels. Mount the dial caliper on the other end. Use that to measure the difference in length of the diagonals. After that, it's all geometry. The Z axis is a little more complicated because there are two issues: 1 -- Is the spindle perpendicular to the XY plane? 2 -- Is the Z axis travel perpendicular to the XY plane? For the first, mount the indicator on a long arm attached to the spindle. Rotate the spindle by hand and see how the indicator varies. The amount of variation will tell you how far out of square the spindle is. If you plan on drilling holes or milling edges of square blocks, it must be accurate. If you are just carving with the end of a ball mill, it might not matter as much. If you are drilling holes, this error cannot be corrected in software. For the second, mount a large cylinder with ends that are perpendicular to the axis on the table (a cylindrical square). Put your indicator on the Z axis and move it up and down, touching the surface of the cylinder. Do this on the edge aligned with the X axis and on the edge aligned with the Y axis. If you don't have such a square, you should be able to make a reasonable one on a lathe. If you don't have a lathe, use a plane square. You should be able to make an accurate square on you router after you correct the XY axis. In principle, misalignment of the axis motion can be corrected in software. Whew. I hope I got all of the details right. If not, someone please correct me. Ken Christopher Purcell wrote: I would like to improve my home-made 3D wood carving router. It has stepper-driven 1m long THK ball screws (bless you Ebay) which seem to be moving exactly as EMC2 commands, now that I have Helical couplers fixing the backlash. The next thing I want to check and maybe tweak is the perpendicularity of the 3 axes, which I bolted down using only a carpenters square and level as guidance. This is in a home wood working shop so the only instrumentation available is a dial indicator. If I can measure the axes, then corrections can be included in EMC, presumably as hinted at in the kinematics chapter of the Integrators handbook. How do you measure the perpendicularity of 3 axes of a mill? [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trade-offs on where to place PID loop - controller vs EMC2
Hi Karl, Rather than using telephone, most people here prefer that conversations take place on IRC. That way: 1 -- many people can participate 2 -- there is a record so that others can read and benefit Since the advice you get is free, it is generally difficult to argue with the people who feel that way. Of course, this list is another good way to communicate. In general, the preferred place to put the PID loop when using EMC is within EMC. I'm sure others here will agree with me and probably be able to give you some of the reasons. Ken --- Karl Schmidt wrote: lots of stuff snipped Any and all feedback on this is welcome - also feel free to call (or ask me to call you).. Karl Schmidt EMail [EMAIL PROTECTED] Transtronics, Inc. WEB http://xtronics.com 3209 West 9th StreetPh (785) 841-3089 Lawrence, KS 66049 FAX (785) 841-0434 Give me four parameters and I can fit an elephant; Give me five and I can wag its tail. (The source of the above quote?? Variants have been attributed to C.F. Gauss, Niels Bohr, Lord Kelvin, Enrico Fermi.) - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Problem Using Axis
Thanks Ray. I tried this, but at first it didn't work (the monitor wouldn't sync). Adding a line to specify the mode as 1280x1024 was the final touch. Thanks again (and to SWPadnos who suggested the same thing with less detail on IRC). Ken Ray Henry wrote: On Wed, 2008-08-20 at 18:01 -0400, Kenneth Lerman wrote: I'm trying to use Axis with the latest release and am having a problem. When Axis starts, the screen breaks up. There are dark horizontal lines appearing on the Axis window and across the screen to the right of it. It looks like some sort of video problem. TKemc does not have the same problem. Has anyone seen this before. Anyone have a cure? Ken I had a few little problems with the AXIS GUI display using the default via display driver on a couple of 8.04 systems here. They went away when I switched to vesa. I did that by adding the following lines to /etc/X11/xorg.conf between existing sections about line 25. Section Device Identifier Configured Video Device Driver vesa EndSection Rayh - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Problem With New Release -- Can't Find LP port
Sound good, Jon. Some other things I've noticed in my (still ongoing) conversion to EMC2. 1 -- The Integrator manual pages have the wrong names for some of the pins. 2 -- It would be nice if the univpwm_io.hal file had the inverted sense for the limit and home switches. As far as I can tell, most people use normally closed switches for these functions. It is set up now for normally open switches. Lines in the file for both with the unused one commented out would make it easier for the integrator. Regards, Ken Jon Elson wrote: John Kasunich wrote: Jon Elson wrote: Chris Radek wrote: On Wed, Aug 20, 2008 at 11:35:27AM -0500, Jon Elson wrote: OHHH. HIGHLY dangerous. It writes 0x80 to the I/O port 0x402 above that address you specify. If you don't specify anything, it probably defaults to zero, so it writes to I/O port This write should be added to the driver. If it needs to be optional, it should be a load-time parameter for the driver so the user can change it in the hal file. Note the second part of Chris's statement: it should be a load time parameter for the driver. OOps, I DID miss that! Yes, now it makes some sense to do this. I will try to put this in in the next couple days. I agree that writing to any address by DEFAULT can be dangerous and is stupid. But having a load time parameter such as: loadrt ppmc dangerous_pci_setup_hack=1 What the heck should we call it? Some people have chafed at the name pcisetup. Any suggestions? I'm thinking, maybe, something like force_EPP. How does that sound as the parameter name? Jon - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Problem With New Release -- Can't Find LP port
I'm finally (after a disk crash) installing emc2 on my system -- a Dell Optiflex GX150. This is the same machine I was running the BDI EMC1 on (except for the change of disk drive). I'm using Jon Elson's UnivPWM boards. Dmesg shows that on boot, the lp driver is loaded, but no device is found. It should find the device at ox378. Jon's program pcisetup runs without error. His univpwmdiag program shows no boards found but otherwise shows no error. Does anyone have any quick hints or suggestions? Thanks, Ken - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Problem With New Release -- Can't Find LP port
Fixed. The problem was that I needed to run pcisetup 378. I don't know what pcisetup does with no argument, but it doesn't generate an error and it doesn't do what I need done. Ken Kenneth Lerman wrote: I'm finally (after a disk crash) installing emc2 on my system -- a Dell Optiflex GX150. This is the same machine I was running the BDI EMC1 on (except for the change of disk drive). I'm using Jon Elson's UnivPWM boards. Dmesg shows that on boot, the lp driver is loaded, but no device is found. It should find the device at ox378. Jon's program pcisetup runs without error. His univpwmdiag program shows no boards found but otherwise shows no error. Does anyone have any quick hints or suggestions? Thanks, Ken - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Problem Using Axis
I'm trying to use Axis with the latest release and am having a problem. When Axis starts, the screen breaks up. There are dark horizontal lines appearing on the Axis window and across the screen to the right of it. It looks like some sort of video problem. TKemc does not have the same problem. Has anyone seen this before. Anyone have a cure? Ken - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Tool Dia Compensation
My understanding is that cutter compensation is supposed to automatically generate the same part if the diameter of the tool is changed. So, if I cut one part with a tool with a diameter of .375 and another with a tool with a diameter of .250, the parts should wind up essentially the same. Will a Fanuc controller do this? If I specify the gcode with a sharp internal corner, what radius will it make the corner? How do I specify that? If we make a change to EMC to be compatible with Fanuc (in this area), we should provide some sort of switch to turn this mode on and off. You say that you guarentee this code that Im talking about will make the correct part on another machine because it already has. A part can only be correct if it matches the gcode. Are you saying that depending on the cutter used, parts with .250 and .375 internal corner radii are both correct? Would the drawings for the part show that the radius of the internal corner doesn't matter? -- If we are going to change the behavior of EMC, we should add a switch (perhaps in the ini file) so that the old behavior can be selected. -- Ken Terry wrote: I know where you are coming from on figuring things out for yourself.Many of the people on this forum are in this as a hobby and should learn the right way to do G-code. As for myself I have been writing G-code for 20+ years and the fun of solving comp problems has lost its appeal. If something can save me some time Im all for it. I guarentee this code that Im talking about will make the correct part on another machine because it already has. The other machine I am talking about has a Fanuc on it. Now are you going to say that the world leader in CNC controls is not doing cutter comp right? I feel EMC should be compatable with Fanuc.I feel this way because EMC is already better than most other software out there,and you need something to use as a rule of thumb. I dont know squat about electronics,HAL,or alot of the stuff all you guys talk about here(I learn enough to get my machines going and thats about it)BUT when I tell you there is nothing wrong with a G-code program,that program is good. Now that is blunt,if you want lessons on being blunt it will cost you. Later Terry On Sun Aug 17 21:26 , Kirk Wallace [EMAIL PROTECTED] sent: On Sun, 2008-08-17 at 22:37 -0500, Chris Radek wrote: ... snip I have heard that a lot of cam-generated code doesn't work with emc's cutter compensation because it depends on certain behavior in concave corners. Some will argue (just wait!) that the cam should give a path that can be cut with the given tool. That means there cannot be sharp inside corners. They are right. Others will say lots of other controls will leave the round inside corner automatically and not error. They are also right. I would personally also like this behavior. ... snip Sorry for being blunt. I am submitting an energetic vote against this. I think it is up to the humans to do a little thinking and understand how machining works. It's up to us to accurately instruct the machine with an understanding of the limitations of the process. If we tell a mill to cut a sharp inside corner, then shame on us. I do it all the time, but I want the task of fixing it. Having EMC2 try to find and fix our mistakes for us is like ... well, like using Windows. (Don't drink the Cool-aid) Otherwise, I don't really care. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC/EMC CNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/EMC CNC) - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php\?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Msg sent via CableONE.net MyMail - http://www.cableone.net - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the
Re: [Emc-users] RELEASED: emc 2.2.6
Hey John, you have a typo in your last line. You wrote: They are always looking for more help. You should have written: We are always looking for more help. :-) Regards, Ken John Thornton wrote: Steve, What is really on your mind? You come out with both barrels blasting your bound to get some flak... On 11 Aug 2008 at 2:58, Steve Blackmore wrote: On Sun, 10 Aug 2008 20:21:11 -0600, you wrote: Gee Steve, one would assume that if you subscribe to the EMC USERS mailing list that you are using it all ready... Why would you assume that? I am a prospective user being baffled by bull! Do you have a real question or are you just mad at everyone? Your answer only reinforces my point, you all seem to assume everybody knows what you are talking about, and you do little or nothing to encourage new users. What do you expect the EMC volunteers to do to encourage new users? BTW, you would not belive the amount of time spend on the manuals. They are always looking for more help. John Steve Blackmore -- -- --- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CNC design questions
Regarding power supplies: Computers use regulated power supplies because the electronics require a voltage within a relatively narrow range. You don't need a regulated supply to drive a stepper or servo (although you might for some of the electronics connected to them). For that reason, the answer to the question linear or switching is neither. Use a transformer, a diode bridge, and a capacitor. Add some fusing, perhaps some inrush protection, and a bleeder across the capacitor. Ken Rafael Skodlar wrote: ...Snip... The reason I mentioned power supply is I'm not sure which way to go, linear or switching. While switching PSU is good for computers and electronics in general with almost constant power use, I'm not sure about driving stepper motors with large current surges during acceleration. ...Snip... - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Continuous and Absolute
Kirk, See: http://en.wikipedia.org/wiki/Gray_code Gray codes have the property that every position is a valid value. Each change in position involves a change in only a single bit. Absolute rotary encoders typically use gray code (or something like it). They are available in many resolutions. Ken Kirk Wallace wrote: I was reviewing a document from Sanyo covering AC servo motors: http://motiononline.com/PDF%20Files/Handbook/Handbook.pdf It talked about the AC system needing absolute shaft position in order to duplicate a brushed commutator in software. It was indicated that a low resolution absolute encoder could be used to determine shaft position during motor drive initialization. Then a high resolution incremental encoder could take over for commutation and axis position feed-back. I would like to replace the encoder on a Yaskawa motor, and got to thinking about what I could use for an absolute encoder. My first thought was an optical disk encoder with N bits. Then, I realized that there will be positions between bits where the data is zero or unstable. I remembered US Digital had absolute encoders, so I looked at this one: http://www.usdigital.com/assets/general/102_mae3_datasheet_1.pdf When I saw the output graph, it showed a discontinuity at position 0, so this would not work either. Then, I envisioned a pair of sine wave outputs, which would be continuous across all possible outputs. I believe resolvers have this kind of output. I could use a pair of ADC's with Schmitt triggers to digitize the analog signals, so that I can get the data into EMC2. I had a plan for a 24 position absolute encoder for a tool changer and realized that I had the same problem. If the tool changer powers up between tool positions, I won't be able to determine the changer status without moving the carousel to scan for a valid output. I don't want to have any unsolicited changer movement or require the user to remember to manually initialize the changer, so I suppose I need a continuous encoder here too. Am I understanding the issues correctly? Anybody know of a _cheap_ way to get a non-mechanical low resolution continuous absolute position? (P. S. Maybe use two USD encoders 180 degrees apart, but this is too expensive and maybe produces two discontinuities.) - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Continuous and Absolute
When you power up, you read the 8 bit value (for a 256 position absolute encoder). That will give you an unambiguous position. Ken Kirk Wallace wrote: On Sun, 2008-07-20 at 14:04 -0400, Kenneth Lerman wrote: Kirk, See: http://en.wikipedia.org/wiki/Gray_code Gray codes have the property that every position is a valid value. Each change in position involves a change in only a single bit. Absolute rotary encoders typically use gray code (or something like it). They are available in many resolutions. Ken I think this works for transitioning from a known state to another state, where you can bridge the discontinuity by storing the last valid state and only updating when the next valid state comes along. The problem, I think, is in coming up with a sensor that never has an unknown state, even immediately after power up. I probably need to lower my expectations a little, and allow for a state resolution procedure. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Continuous and Absolute
What do you mean by encoder is in an invalid position. Every position read from an absolute encoder is valid in the sense that it reflects the actual position of the encoder within its tolerance. If you used a 256 count encoder for your 24 positions, each tool position would correspond to 256/24 = 10-2/3 counts. So if the encoder read from 0-10, that would be position zero. 11-22 would be position one, etc. On power up, you would read the encoder and that would tell you what position you were at. Assuming that the tool positions corresponded to the start of each range, 0 would correspond to position 0, 10 would correspond to tool position 1. 21 would correspond to tool position 2, etc. To allow for some slop, you would probably set things up so that 255, 0, 1 were tool position 0. 9, 10, 11 were tool position 1, etc. If you found that you were between positions, it wouldn't really matter. The first time you seek to a tool, you would still know where you are and where you have to go. A true absolute encoder is a static device. You can read a value without moving it. Ken Kirk Wallace wrote: On Sun, 2008-07-20 at 14:28 -0400, Kenneth Lerman wrote: When you power up, you read the 8 bit value (for a 256 position absolute encoder). That will give you an unambiguous position. Ken On my original design for a tool changer encoder, I had a sprocket engaging the carousel chain: http://www.wallacecompany.com/machine_shop/Shizuoka/00030-1a.jpg with a gearbox to get one encoder revolution per chain revolution. The encoder then needs twenty-four positions or five data bits. I was going to use IR LED's and photo-transistors on each side of a disk: http://www.wallacecompany.com/machine_shop/Shizuoka/Tool_Changer_Encoder-1a.png A sixth bit was added as an in position signal. Currently the chain is moved by a Maltese Cross: http://www.smom-za.org/MalteseCross/mechanics.htm so only valid positions would be possible at rest. The problem here is that the Maltese Cross moves the tools in a jerky fashion for each position change and it is slow. I want to drive the chain with a simple gearbox with acceleration/deceleration control for the start and end position. With this and the disk encoder, there will be invalid input between positions, which is mostly okay because I'll control the motor to stop at validated positions. The problem is when the system powers up and the encoder is in an invalid position. The only way to validate the position is to move the chain. I don't want to do this automatically, for safety. I could have the user manually initialize the changer on each power up, but I prefer to not have to do that. I could go to a high resolution encoder, but this just reduces the chance of getting an invalid start. I would prefer to have an encoder that has no invalid states. ... Now that I have given this more thought, an invalid start may not be a problem, because when a tool change is requested (and expected), the position will validate on the first position change. The only down side is possible wasted motion by guessing which way to go or how far. -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Tandem Axes-YY
Jon Elson wrote: Ray Henry wrote: Are there swivel joints between the two screws so that the motors can move independent of each other? Excellent point, and no, there do not appear to be any joints between the two sides. (Dr. Lie has sent me photos of the machine.) That is going to make it MUCH harder to properly home the thing without bending the rails or ballscrews. I wonder if it would work better to home one side, with the other side's servo amp disabled, and then home the second side the last few encoder counts. Or, home the system with the servo P gain turned WAY down, just high enough to get movement, and then turn it up after the axes are in sync. That solution assumes that one side can back drive the other. That isn't necessarily the case. It might be worth considering a home switch on just one side and a squareness indicator on the other side. (Somehow, measure the offset or flexing between the two screws.) Then drive one side to make the axis square. Then lock the two axes to each other and home the whole thing. This is, in general, a bad idea to have a rigid tandem axis. Jon - Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Ken - Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Perfboard Wire
The classic wire wrap wire has kevlar insulation, and I believe that it handles heat pretty well. Teflon insulated wire does well, also, but it is a pain to strip without the proper tool. Ken Kirk Wallace wrote: I have been using CAT-5 wire to solder up perfboard circuits, but the insulation melts back. Does anyone have a favorite wire for perfboarding? - Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC the right choice for us?
One possible solution to the probing issue is to write a special kinematics that interfaces with probing. With the kinematics turned off, probe the sheet at the desired resolution. A special (new) command would write the X, Y, Z coordinates of each probed point to the kinematics. When the kinematics is turned on, it would then provide a Z axis correction for each point based on interpolation of the table that was generated during probing. This should be pretty straight forward to do. My first approach would be to do most of the work in user space. The user space code would collect the probe data. It would then generate a table in a form most usable by the kinematics code. The table would then be read into a shared memory region where it could be accessed by the kinematics code. To make this fast, I would probably use a table with a uniform grid, say 10 points per inch. (Kai, would that be fine enough?) For a 20 inch x 30 inch panel (600 square inches), that would require 60,000 points. Storing a real number for each is only a quarter of a megabyte. That's reasonably small by today's standards. A 100 points per inch would require about 24 meg. That's still not unreasonable. The kinematics are a simple change to trivkins to add or subtract the Z-axis correction from the target value based on the X and Y locations. My guess is that it would take about a week for someone who had done a kins before and who knew what he was doing. Allow a month for someone who is new to the game. Ken Kai Schaeffer wrote: Andre' Blanchard schrieb: Why would it run out of lines? It should always have a buffer of interpreted G-code to read ahead. I did some experiments with the relatively new G64 P command to set the allowable tolerance during contouring. I was doing 588 blocks of G-code a second, and that seemed to be limited by the feedrate I had set and acceleration limits for the machine, not the CPU. This was on a 600 MHz Pentium III, so much faster hardware is available. It kind of sounds like the current system may be running multiple machines off one computer, some type of drip feed DNC. No, one computer per machine. But the software they have right now is ... let's say not perfectly optimized.;-). So it could happen from time to time on the older machines with older PCs. But we just had another case were it happened: We milled a gear which was defined over DXF file with a lot of small lines (some thousand). So the radius compensation took a while (some seconds). - Measurement of the surface for a Z-correction probing? At the beginning of each program we measure the Z-profile of the surface of the sheet. This profile is used to correct the position of the Z-axis to get a precise cutting depth. EMC currently doesn't have a feature like that. I suspect it could be done, but it wouldn't be trivial. May be easier to run an EMC program to probe the surface and store the data in a file. Run an offline program to appliy the probe data to the part program. Then run the modified part program in EMC. I am not sure. Let's say you have a movement over the whole sheet. How could you correct it if you have a little buckle in the middle? I would say it should be a layer somewhere between the vector generation and the hardware. What does it wouldn't be trivial mean in man-months? Regards, Kai - Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gcode and coordinate system explanation needed.
If removing a space character changes the behavior, please file a bug report. Spaces are ignored in gcode, except within a comment. Come to think of it, there is another case where removing a space character should change the behavior. If the original line was too long and removing the space makes the line a legal length, the old program was illegal and the new one is legal. I don't think that is what is happening here. Ken Dirk wrote: On 22 jun 2008, at 22:06, John Thornton wrote: G28 goes to a predefined position (home as defined in parameters 5156-5166). To make G28 go to 0,0,100 you must home the machine there which will become 0,0,0. Then a G28Z0 with no space will home the Z axis only. The space between the G28 and the axis must call up an undocumented feature... I'lltry what happens if I remove the space. I'll play around with the G28 a bit but I think I'll remove from the postprocessor. I don't see the need for going to 0,0,0 before starting. Dirk - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Data Types
I've changed the subject of this to better reflect what it is about, and am responding on both users and developers lists so that the original audience will still see it. I suggest that future follow ups be on just the developers list. I do seem to recall a prior discussion about data types, but since I don't keep files of such things, I don't have a pointer to it and I could easily be mistaken. While using doubles to get higher precision would be a solution, it is aesthetically nasty for us purists. Why would one use a floating point number for something that is inherently an integer? Also, one could easily imagine porting HAL to a platform where floating point arithmetic has significantly higher cost than integer arithmetic. For example, some of us are thinking about a split where the HAL layer would be moved to a remote controller using (say) an ARM processor. The general answer to the issue of integer typing is that the C standard (at least the older versions I'm familiar with) does not say that an integer is 32 bits. I've worked on platforms where an int was 16 bits, and I can imagine machines where it might be eight or 64 bits. My answer to the issue of more precision for encoders would be to use a type hal_s64. That would be defined as a long long on the machines I usually use. I'm aware that there are some standard definitions for such types that do not have hal in the name. The kernel source is full of things like int32, s32, _s32, __s32. Using hal_s32 makes more sense to me than any of those because I can at least figure out where to go to find the definition if I ever want to port this. Ken paul_c wrote: On Thursday 05 June 2008, Stephen Wille Padnos wrote: We've discussed various methods of handling larger data types, which this would require. I don't recall ever seeing any discusssion about the usage of data types.. The good news is that once we have that, we can use doubles anywhere. Please tell us why doubles can not be used throughout. Do any of the other encoder interfaces use the same 32-bit integer value? Yes, since a hal_s32 is a 32-bit int ;) So why not use a standard int rather than hiding behind some @$! naming scheme ? - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] POWER for I/O needs
It's generally NOT a good idea to power logic and high brakes from the same supply. Actuating a brake can cause power surges that will adversely affect your logic. Ken [EMAIL PROTECTED] wrote: Hi I have one AC servo motor IG 34 with power brake. To open that power brake I need 24V 1.5 amp constant power. I searched and found that in the same city where I am there are mfg. http://www.v-infinity.com/ There have very good price! AC-DC converter 2-24 cost $43, but I want to buy power supply that has multiply power –DC output to I can supply my limits and home switches. I my use it for other I/O needs. So, I need help with what voltage MAX and MIN should be to be safe with MESA Electronic boards 7i33 / 7i37? After I find it I will buy one power supply that has multiply out puts such as 24V 2A for power brake and 12V 2 A (or something more appropriate for I/O needs) So what voltage is safe or appropriate for I/O needs? Thanks Aram - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
You just have to love it. Who writes this material? C: You're smart enough. P: No I'm not. C: But you're sharp as a tack. P: Nope, stupid as a rock. C: You're just being difficult. P: No I'm not. Besides, this project sucks. Only an idiot would want to work on it. Of course, the above is pure fiction. Any resemblance to persons living or dead is purely coincidental. Ken Chris Radek wrote: On Sun, May 25, 2008 at 11:18:21AM +0100, paul_c wrote: On Saturday 24 May 2008, Chris Radek wrote: Using a remote server that I have a shell account on... ssh: connect to host cvs.linuxcnc.org port 22: Connection refused Can you ssh to anywhere else from this machine? Yes No you can't. Sourceforge disallows it. You must not have actually tried. http://alexandria.wiki.sourceforge.net/Project+Web%2C+Shell%2C+VHOST+and+Database+Services#connectivity Log on to Sourceforge and you poke around and see what works (or not) first hand. Yes I did. Then I quickly determined that they don't allow any outgoing ssh. Then I found it in their documentation. Check your firewall log after the failed trace. And look for what ? For something relevant being blocked at the time you do the trace, obviously! I know you're smart enough to troubleshoot a connectivity problem. You're being obtuse on purpose. Why? - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Harmonic gear and EMC2. ????
It is my understanding that in a grinding machine: 1 -- Cutting forces are low. 2 -- Backlash is generally not important. 3 -- Smoothness of motion is very important. I would suggest that before you worry about how to drive the components in slow motion, you should tell us how you plan to drive the components smoothly. What are you going to use for linear (for the linear axis) bearings and what will you use for rotary bearings? Stiction can be a major issue. Air bearings come to mind as a possible solution. Regarding the feed rate of .001 inch per minute and the distance of 12 inches. Am I correct in assuming that you would not be traversing that length at that feed? If that is true, what is the actual distance that has to be traveled at that rate for any given pass. A simple mechanism to provide very high reduction ratios is the differential screw. It does, however, have a limited range of motion. It sounds like an interesting project. Do you have any sketches showing the general layout? Ken [EMAIL PROTECTED] wrote: look design of harmonic derive. it is compact and small. you do not want to have huge gear reduction box on the machines. space are limited too. Is there some reason why simple worm and wheel drives won't work here - even two or three stages with backlash adjusted out? Ian Ian W. Wright Sheffield UK - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Harmonic gear and EMC2. ????
A simple solution is to use a dual drive. Use a course mechanism with long travel for course positioning and a fine mechanism with limited travel for fine positioning. The fine mechanism has a large mechanical advantage and can use a smaller motor and driver. Of course, some sort of clutch mechanism could be used to allow switching between the course and fine speeds. You haven't answered the question of what type of mechanism you are planning to use to provide smooth linear and rotary motions at this slow speed. Ken [EMAIL PROTECTED] wrote: travel at feed 0.001 will be geometry of 1 inch end mill, with length of end mill 4 inch. 0.001 /min it is cutting feed only. rapid to new position will be much faster. It is my understanding that in a grinding machine: 1 -- Cutting forces are low. 2 -- Backlash is generally not important. 3 -- Smoothness of motion is very important. I would suggest that before you worry about how to drive the components in slow motion, you should tell us how you plan to drive the components smoothly. What are you going to use for linear (for the linear axis) bearings and what will you use for rotary bearings? Stiction can be a major issue. Air bearings come to mind as a possible solution. Regarding the feed rate of .001 inch per minute and the distance of 12 inches. Am I correct in assuming that you would not be traversing that length at that feed? If that is true, what is the actual distance that has to be traveled at that rate for any given pass. A simple mechanism to provide very high reduction ratios is the differential screw. It does, however, have a limited range of motion. It sounds like an interesting project. Do you have any sketches showing the general layout? Ken [EMAIL PROTECTED] wrote: look design of harmonic derive. it is compact and small. you do not want to have huge gear reduction box on the machines. space are limited too. Is there some reason why simple worm and wheel drives won't work here - even two or three stages with backlash adjusted out? Ian Ian W. Wright Sheffield UK - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] CVS Access
You're kidding, right? Since the reason that the switch was made from sourceforge was that it was unreliable, one could equally say that NO ONE had access when we used sourceforge. It's been a long time since I used the term plonk, but it's getting close to time to use it again. BTW: I had no trouble pinging cvs.linuxcnc.org (although the ping I am using doesn't recognize http://cvs.linuxcnc.org), and the traceroute worked just fine for me. Ken paul_c wrote: On Wednesday 21 May 2008, John Kasunich wrote: EVERYONE has anonymous read access: http://cvs.linuxcnc.org/cvs/ `ping http://cvs.linuxcnc.org` - Fail `traceroute cvs.linuxcnc.org` - Stops somewhere in the alltel.net system. `cvs -z5 -d:ext:[EMAIL PROTECTED]:/cvs co emc2` - Connection times out. Your assertion is incorrect, likewise, I was in error in claiming you had labelled me an ex-developer - It was some minor nobody on IRC a year or two ago.. --- Paul. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Micro stepper driver MSD542 / KL-5042 cont
It appears from previous posts, that the gantry is about 1.5 meters long and rides on rails. What is the support/bearing mechanism for the gantry to ride on the rails? In particular, if there are two or more supports for each side of the gantry, how far apart are the furthest supports on each side? One of the problems with a gantry style machine is that unless you are careful, the gantry will skew with respect to the other axis. Skewing can cause uneven motion and/or distorted motion. There are a variety of ways to prevent that. For example, if the bearing supports for the gantry are as far apart as the width of the gantry, the forces causing the gantry to skew are resisted. Another technique is to use a motor on each side of the gantry so that the two sides are driven in tandem. A third technique is to use a rack and pinion drive with a rack and pinion on each side and a shaft connecting the two pinions. Then a single motor can drive both sides at once. There are engineering solutions to these engineering problems. A good reference is some of Slocum's books/papers. You can google for them -- I don't have a handy reference. Ken aaron Moore wrote: One stepper per axis Gantry runs on X axis rails and weighs about 90kg - 100kg Y axis weighs about 20 -30 kg And the spindle and mount 10-20kg All axis run directly from trapezoidal screws 16mm dia, 4mm pitch with brass nuts. At present it is set for 16 microsteps. Not sure if this answers the last question The motors are actually FL86STH156-4208 Voltage: 5.25V Current (phase): 4.2A Resistance (Phase): 1.25Ohm Inductance (Phase): 8mH Holding Torque: 11.96Nm Length: 156mm Thanks Aaron - Original Message - From: Dave Engvall [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: [Emc-users] Micro stepper driver MSD542 / KL-5042 cont Date: Wed, 21 May 2008 13:26:15 -0700 Aaron, Other responders have indicated they needed more infomation. If you can fill in the blanks and confirm or correct assumptions then someone has a real chance of providing concrete help. It won't be me as I'm a servo person. Sorry. OK, lets gather some more information here: Stated or implied. 1.5m x 1.5 m gantry. One stepper motor per axis. I assume the gantry is the X axis and the Y which lags is mounted on the X. How much weight are you driving per axis? How do you drive the axes; eg. gears, timing belts, etc and what are the ratios? Another way to put this is one step moves you how far? Step rate under normal conditions. This info is for the stepper experts. :-) Copied off a vendor site. Stepper motor: The FL60STH86-3008BF is a High Torque three stack Nema 23, 1.8 degree hybrid stepper motor with a holding torque of 3Nm (425 Oz-in) Driver: Supply voltage up to +50VDC, current output up to 4.2A peak Optically isolated input signals, pulse frequency up to 400 KHz Automatic idle-current reduction 3-state current control for less motor heating 15 selectable resolutions in decimal and binary Suitable for 4,6,8 lead motors Stepping on upward or downward pulse edge (selectable) DIP switch current settingvalue 4.1 Connector P1 configuration SignalFunctions PUL+(+5V) PUL- (PUL) Pulse signal: in single pulse(pulse/direction) mode, this input represents pulse signal, effective for each upward – rising edge; in double pulse mode (pulse/ pulse) this input represents clockwise(CW)pulse. For reliable response, pulse width should be longer than 1.5μs. DIR+ (+5V) DIR- (DIR) Direction signal: in single-pulse mode, this signal has low/high voltage levels, representing two directions of motor rotation; in double-pulse mode (set by inside jumper JMP1), this signal is counter-clock (CCW) pulse, effective on each rising edge. For reliable motion response, direction signal should be sent to driver 2μs before the first pulse in the reverse motion direction. ENA+ (+5V) ENA- (ENA) Enable signal: this signal is used for enable/disable, high level for enabling driver and low level for disabling driver. Usually left unconnected(enabled). HTH Dave - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01
Re: [Emc-users] Micro stepper driver MSD542 / KL-5042 cont.
I really think we need some pictures and/or details. Instead of using letters for a test case, could you try using short lines? First plot a set of parallel lines about 5 cm long and 2 cm apart, parallel to the X axis and centered on the Y axis. Then do the same thing parallel to the Y axis and centered on the X axis. Ken aaron Moore wrote: I think I would like to clear a few miss understandings here. I am not an engineer and will never be one. I am a furniture maker/designer with a keen interest in digital technologies and linux. I have built a 1.5m x 1.5m gantry style router table with high spec rails, carriages and bearings. It has been two years in the planning and taken 2-3 months to build in my spare time. I bought a CNC Kit from an online company in UK (who have not been able to sort my problem out) consisting of 3 x MSD542 micro controllers, 3 X FL86STH High torque Nema 34 Stepper motors and 2 X L6-PF11-001 (PS407) power supply units. The motors are connected in parallel with micro stepping set to 16 and the power at 4.2 amps. It has cost me well over £1000 and I would like to get it to work with a reasonable amount of accuracy. I have tried using many settings of speed and acceleration but I always get a the same result. When engraving a line text the individual letters look okay but they are always misplaced along the y axis by between 5mm and 30mm, and always in the same direction. My question today is could this be because I have not used shielded cable to wire the powersupply and drivers together. If this could be the problem what kind of cable should I use. Or is there something else I should look into If any one can offer some advise I would be very grateful Cheers Aaron -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 155 ms real-time delay every 10 minutes?
Googling: pit clocksource had been installed Got me to: http://lists.opensuse.org/opensuse-bugs/2008-01/msg00541.html It appears from the above that you may be able to choose your clock. Choose wisely. Ken Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Original Message - From: Anders Wallin [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Sunday, May 04, 2008 5:10 PM Subject: Re: [Emc-users] 155 ms real-time delay every 10 minutes? I forgot some things in my description: - The delay is not affected by cpu load. I've run glxgears and some filters in GIMP which put the cpu load firmly at 100% and that doesn't affect the rt delay. It's still fairly normal in between, and then there are the 155ms delays every 10 minutes. - also ran hdparm -t /dev/sda . It shows around 72Mb/s bandwidth and doesn't affect the latency-test. - I've stopped cron, anacron, and atd. AW - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 155 ms real-time delay every 10 minutes?
http://lists.soekris.com/pipermail/soekris-tech/2006-September/011079.html Has more information on the various clocks. Ken Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Original Message - From: Anders Wallin [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Sunday, May 04, 2008 5:10 PM Subject: Re: [Emc-users] 155 ms real-time delay every 10 minutes? I forgot some things in my description: - The delay is not affected by cpu load. I've run glxgears and some filters in GIMP which put the cpu load firmly at 100% and that doesn't affect the rt delay. It's still fairly normal in between, and then there are the 155ms delays every 10 minutes. - also ran hdparm -t /dev/sda . It shows around 72Mb/s bandwidth and doesn't affect the latency-test. - I've stopped cron, anacron, and atd. AW - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Un-Homing an axis
I believe that the way is *should* work is that overriding limits should override both hard and soft limits. Compared to overriding hard limits, overriding soft limits is harmless. For additional protection though, overriding limits should allow jogging only *away* from the limit that has been hit. That would solve the problem very nicely, I think. Of course, I have no idea about how difficult this might be to implement. :-) Ken Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Original Message - From: John Thornton [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Friday, May 02, 2008 8:26 AM Subject: Re: [Emc-users] Un-Homing an axis You would think that a jog override for soft limits would be nice. But then that encourages sloppy setup and could cause serious damage on a larger machine... John On 1 May 2008 at 22:43, Carl Helquist wrote: Somewhat related to the overriding limits topic, but I think different enough to start a new topic: I am using soft limits on my machine. If I accidently click on home instead of touch-off (the buttons are right next to each other) at that point I am stuck. I can't jog back to the home position to reset it because I'm at the soft limit. While the obvious answer is to not click the wrong button, I could also see this easily happening on the keyboard as my home key is right next to the arrow keys. Is there any way to put an axis back to the pre-homed state? Either that or a soft limit override? As I write this I may have answered my own question. I could modify Axis and Tkemc to disable the keyboard home button (not a great sacrifice as far as I can see) and move the screen home button to a location that requires a more deliberate move on my part, possibly on a pull-down menu. Disabling the screen button after homing the axis once is also tempting, with maybe an option to turn it back on in one of the pull down menus. Does anyone see any great disadvantage to any of this? I not suggesting that this be a change to the official version of Axis and Tkemc, just wondering if anyone sees any problems with my idea. Carl Helquist -- --- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com /javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Off Topic, DC Spindle Motor
I have a Rivett lathe that uses a motor generator to supply the DC for the motor. That's a PITA. I have a rotary converter to generate the three phase to drive the motor generator to create the DC for the motor. When I was in the motor shop getting the commutator on the motor reworked, I spoke to someone there about what I was using the motor for. They had an off the shelf solution that took 120 or 240 (I forget which it was or whether it could work on either) in and generated DC for both the field and armature windings of a DC motor. It seemed to have variable speed control and was intended for this application. I believe the price was between $100-$200 dollars. (My motor is a 2HP.) I decided not to go that way because the lathe has a very nice bidirectional rheostat/reversing switch that I wouldn't want to replace right now. Also, the lathe doesn't get heavy use. If I ever convert to CNC, I'll look at that. Someone on some list suggested that DC motors have much better torque/horsepower curves than a corresponding 3ph motor with a VFD. That's another reason to stick with the DC motor. Ken Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 - Original Message - From: Gene Heskett [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Friday, May 02, 2008 11:02 AM Subject: Re: [Emc-users] Off Topic, DC Spindle Motor On Thursday 01 November 2007, Kirk Wallace wrote: On Wed, 2007-10-31 at 20:15 -0600, Jon Elson wrote: Kirk Wallace wrote: What is the best way to drive a 4hp, 90VDC, 40A spindle motor on a Hardinge CHNC? Some of the large DC motors I have seen, look like universal motors which would operate on AC or DC. Does anyone know if the CHNC spindle motor could work on AC? I'm thinking, a few dimmer switches in parallel and a stepper to turn the dials ;). I wonder if it would be cheaper to go with a 3-phase motor and VFD. Thanks. No, these motors are NOT universal motors. You could rectify the mains to drive the motor, but then it would draw 40 A from the line. You should be able to find an SCR drive for this. You can't parallel dimmers, they can't be trusted to give the same pulse width. I was joking about the dimmers. So far I have found this: http://www.baldor.com/products/detail.asp?1=1page=1catalogonly=1catalog=B C155product=DC+Controlsfamily=One+Way%7Cvw%5FDCControls%5FOneWayvoltage=1 80 but this puts out 180V and I need 90V. Plus it seems that this kind of controller does not interface with a computer well at all. It's beginning to look like DC lathe spindle drives are a specialty item, which means, hard to find and big bucks to buy or repair. If it is a standard-frame motor, then you could go the 3-phase and VFD route. That may not give you the range of speeds and torque required. The newer VFD's are much better with this aren't they? If you want smooth, controlled reversing, then you need a DC servo drive. If you don't need a complete 4-quadrant servo drive, then the SCR DC motor drives may be the way to go. Baldor and plenty of others make these, they show up on eBay all the time. Jon Hey guys, even the lowly board out of a Harbor Freight 47xx8 micromill, except for the current rating, makes a truly excellent vsc when combined with a PMDX-106. This board, with a much larger bridge rectifier replacing its puny 4 amp device, and about 6 of the mosfets it uses in parallel with smallish current sharing R's in series with the src's of each of the devices could probably do that just fine. The speed control is very stiff with this unit, so stiff that if I'm doing something heavy, I have to rig an ammeter in series with the motor in order to see how close I am to the 'red line'. Otherwise it just blows the fuse with no detectable motor slowdown first. The only problem that I could foresee might be related to this boards ability to drive that much gate capacitance of the paralleled mosfets and still achieve good switching speeds. It is something I have not played with personally, so one might approach this by adding one device at a time watching the heating. Running correctly, the mosfets shouldn't heat more than 10F if screwed to a good heat sink and delivering 50% of their rated current. In my own case, that would be at least 10 amps, but I didn't yet replace the puny bridge rectifier either. Mine is currently in a closed plastic box with the PMDX-106 and has run that way for half a day at a time without the box getting noticeably warm. The direction relays make as much heat as the rest of the circuitry. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Rule #1: The Boss is always right. Rule #2: If the Boss is wrong, see Rule #1
