Re: [Emc-users] Mesa 5i23 and 7i37 I/O problem
Donnie Donnie Timmons wrote: Peter wrote OK one problem I found in Donnies 5I23 HAL file (derived from Ted Hydes 7I43 hal file) is that the Pet_Watchdog function is commented out, causing the watchdog to bite shortly after startup I never minded a big barking dog but it's thous small quite ones that really bite:-) For us newbie could a error message of some type be displayed when the watchdog does time out so we would know that what got us? I guess I'm to use to industrial control system in when a watchdog bites it kill all power and give a very clear errror message. Thanks to Peter and Sebastian and the rest of the group. I know y'all have to be getting tired of newbies and the problem we come up with. Now to figure out how to and all the axis enable line into one and invert it to drive opto relay to power up the amps. Donnie simple alternate use a relay one control signal for all amps if more than 4 amps use one control signal and 2 4pole relays regards tomp -- 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] joint 1 on limit switch error
Mike the error is about a sensed input, not tuning, not thread timing, dont mess with your tuning parameters can you resurrect your original hal file to see if the error goes away? ( or mosty goes away, it sounds like the limit is still enforced and the switch has a bad connection) regards tomp ( 'it was the last thing you did' old serviceman's standby ) Mike Merrett wrote: Hi: Does anyone know why I am getting this error ? Joint 1 on Limit Switch Error it is happening more and more often on my mill -- it is using the sherline driver box on a sherline mill. I have tried raising the ferror, the min_ferror, the base_period, the servo_period, the traj_period -- nothing helps I had limit switches but when I started getting this error I disabled them in the pinout.hal file Thanks in advance for any help, Mike _ -- 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
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Tom wrote: Tom kestrel...@... writes: Youtube videos: If you click on the blue Watch video in high quality in the lower rh corner you can see the screen text. The part in the photos in the down facing side of a triple tree clamp. I like that side because of the visible machine work. The circular ring shaped pockets are for the fork springs. Because I only have 4.9 of Z axis movement on the quill, I have to use two different tool length offset tables: one for the short tools and one for the long tools. I quickly learned that your reference tool has to be the shortest one in the table, since all offset variables must be positive integers. It was actually easier to program the nasty old Bandit III controller for tool offsets - as much as I hate to say it. With Emc2, I wish I had a VMC with an automatic toolchanger. Tom interesting idea about short stroke but (appartently) longer manual backslide do you go from some stop to another or end of stroke to end of stroke for the 2 sets? thanks tomp -- 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...)
Tom ok, you move the knee fwiw something we used to do on the quill may be of help we'd slit a piece of conduit grind it to length and put it between the Bport quill nut and the end of the slot the nut rides in this gives you a fast mechanical offset something like this slotted tube may work on the knee screw raise knee way up insert spacer drop knee onto spacer raise knee remove spacer you get 2 known positions from an axis w/o a readout :) (hmm or more with a set of spacers) tomp Tom wrote: tomp tomp-...@... writes: interesting idea about short stroke but (appartently) longer manual backslide do you go from some stop to another or end of stroke to end of stroke for the 2 sets? thanks tomp Tomp, I think what you are asking is if I have the knee set up as a sort of auxiliary Z axis. The answer is that I don't have an servo/encoder on the knee - even though it is motorized, so all of my Z level tool length adjustments that are too great to be automatically compensated for in the G43H- commands, require me to stop the program (usually at the next tool change), raise or lower the knee, insert the next tool, and do a G43H1 touchoff, and just continue with M6T1 / G43H1 for all the remaining tools. Tedious, but works. Tom -- 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
Re: [Emc-users] comp
Yang the command is not found ygdan1001 wrote: Dear sir: when I compile and install a file with:suro comp --install kinema.c, there is an error: sudo:comp:command not found. What's wrong with it ? Thanks for your help! Regards! Yang 1)check to see that it exists 2) edit your path or use the '. emc-environment' script from the proper directory hth tomp -- 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] 5i20+sevos and ??stepper??
Peter Peter C. Wallace wrote: On Wed, 7 Jan 2009, WF Chan wrote: Date: Wed, 7 Jan 2009 16:55:18 -0800 (PST) From: WF Chan howard_chan0...@yahoo.com.hk To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] 5i20+sevos and ??stepper?? Now I am using analog signal to control the servo amp, but I would like using digial signal to control it. How can I modify the HAL?? What kind of digital signals? Peter Wallace Mesa Electronics typicly velocity as number nit analog but he posted the manual interesting, not bleeding edge but not as old tech as dc brushed servos and amps with lotsa pots tomp keep bunny :) (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- 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] way OT: PDP11
Dave Engvall wrote: On Jan 4, 2009, at 3:56 PM, Jon Elson wrote: Dave Engvall wrote: snip The elegance of this scheme is concealed by its simplicity. Elegance? where? I dont see no elegance Chico Marx tomp -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: PDP11
Stephen Wille Padnos wrote: Lester Caine wrote: All this nostalgia set me thinking I had a silly text graphic based Dungeon and Dragon game on the VAX. It used to while away the lunch hour ;) anybody know if it's still available. I can't even remember the name now :( Either Zork, Hack, or Moria probably. Collosal Cave you are in a twisty little maze of passages :) - Steve TomP -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: PDP11
Ken Kenneth Lerman wrote: tomp wrote: ... Collosal Cave you are in a twisty little maze of passages :) mine didnt say that it went you are in a twisty little maze of passages then you are in a maze of twisty little passages then you are in a twisty passage of little mazes then you were very lost :) heres the original PDP10 source for the original adventure http://www.rickadams.org/adventure/e_downloads.html all alike or all different? TomP tomp -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: PDP11
Dave I agree Dave Engvall wrote: It is amazing how many DEC users, etc come crawling out of the woodwork. All of them with great stories about how things used to be. With all this architectural experience there ought to be some strongly held opinions on a processor chip that would do a good job on real-time applications such as emc and still be affordable. I really believe that someplace along the path Intel is going to make the Px unusable for real time. We as a group are going to need to be able to migrate to some other chip-set. Yes, I know I've been smoking the wrong stuff ... or maybe the right stuff. Ideas?? the processor and the hardware are as old as we are :} i think the separation of church and state is important... the RT stuff must be isolated from the user front end to the point of separate hardware, just to insure the thought is always enforced some of the GL problems that eliminate so many motherboards will be gone when there is no graphics on the rt 'computer' i think a non-computer is better, pmac fanuc mdsi dont use 'computer chips' they use big xilink and cypress devices or get ti chips foundered for them i understand thats not hobbyist in general or maybe it s better to say its a smaller set of hobbyists but there may be good reason to use vlsi custom, at least the big guys think so also the ui and io can be separate the ui 'AXIS' is a great tool, and it's pretty isolated now most io doesnt need rt features few io do ( laser on at start of line, pulse sync with distance traveled... ) the so called 'hi-speed' io only offered on TOL control systems. and as far as i can see, the code for the hi speed is NOT in with the 'plc level' stuff. yeh, i think the future of the hardware must be considered in any project that takes this much time effort to develop hell i'm just putting together off the shelf stuff and its taking months many vendors were not used in my project because they couldnt show me that something would be available for 5 years. The customer insist on it! and some things that could be available, well they werent available here yet ! doh! Dave tomp -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: PDP11
Dave Engvall wrote: It is amazing how many DEC users, etc come crawling out of the woodwork. All of them with great stories about how things used to be. With all this architectural experience there ought to be some strongly held opinions on a processor chip that would do a good job on real-time applications such as emc and still be affordable. I really believe that someplace along the path Intel is going to make the Px unusable for real time. We as a group are going to need to be able to migrate to some other chip-set. Yes, I know I've been smoking the wrong stuff ... or maybe the right stuff. Ideas?? Dave oh one more thought change this topic to future hardware platform tomp -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G43 H1 ??
hello i went to the wiki, and got the users manual then i looked in the index i found 2 ways to use tool length offsets inemc2 regards tomp a...@conceptmachinery.com wrote: Hi I just finish run program with 86 000 lines. It took 4.5 hours. I finish reinforcing frame of my machine and run program generated with VCARVE product of Vectric . I also look for G43 H1 operation and cant can’t find how to input H(n) for tool length like H1… H2….Hn How to input tool length offset H1 …. Thanks Aram -- ___ 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] Ethernet, rtai, and rtnet
Kent Kent A. Reed wrote: Gentle persons: So I've been trying to practice due diligence. The sourceforge mail archives have been really flaky for me today and the Gmane archives go back only 2 years, so I started by searching my archive of emc-users-digest messages that dates from when I subscribed to the digest in late 2005 for occurrences of 'rtnet'. I found three clusters of messages. 1) Evert Lammerts set off a flurry of messages in Aug 2006 with his rt_task_init message. As he subsequently explained, We are trying to make a reliable real-time connection between two EMC computers for exchange of positional data, which is necessary for the project we're working on [at NHL University in the Netherlands]. The exchanges ended with Evert's distribution of his code HAL_RTNET.tar.gz on 06 Sep 2006. (Of course, I had to coax a very balky sourceforge to disgorge this code since the digester scrubbed it as a non-text attachment.) I won't be able to review his code until this weekend. With luck, the code will be commented and the comments will be in English, not Dutch. (Hope springs eternal...) please post any info the ability to have 2 emc system communicate is very interesting ( robot part and tool servers for cell(s) maybe :) 2) There was an extended exchange of messages in Oct 2007 beginning with Jon Elson's Starting a new project in which he said he had been looking at the description of rt-ethernet, answered by Stephen Willie Padnos observing 'I talked to some folks who had gotten RTNet to work for their application (power substation monitoring, I think it was). Apparently it wasn't quite right out of the box, and they had problems getting answers from the developer. This was about 18 months ago though, so things may have changed since then', and continuing with free-wheeling discussion that ultimately involved 11 respondents. yes this effort seems to be realtime communications between 2 emcs does not have to be ( underline 'have' ) 3) There is the current exchange of messages that began in Oct 2008 (from which I infer the cycle-time for this topic is ca 1 year) with Parallel port in the future - query and, except for a three-week hiatus in December, continues today. I don't subscribe to emc-developers-digest (maybe I should?). As I said, I'm having trouble getting the sourceforge mail archives to respond but it seems that real-time ethernet has been discussed, abeit also sporadically, since 2004. I'll have to mull over these discussions. If you have any other resources you think would be useful for me to look at, please let me know. I've already used Google to turn up some interesting articles on real-time ethernet (but I've only looked at the first dozen hits out of Google's approximately 1,170,000 hits [that's 1.170.000 to you folks across the ocean] so please be specific. Regards, Kent thanks again for the post tomp happy western and eastern new years -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] turbine blades
Brian the blades are forged or cast ( lotsa hollow passages ) then details are milled or edm'd the blades are welded together into rings ( even with the fancy tree locators ) and machined again there some great sites explaining the aero and stationary engines and components this is great http://www.gentz.net/ regards tomp BRIAN GLACKIN wrote: snip... It would be neat if one of the Hydro turbine manufacturers in the area would set up a demo on how they machine the huge blades. and for machining, it does take multi axis or a very very large investment in fixturing. engineers that can design the jigs can demand good bucks! regards tomp -- 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] APT and G code
Adam yes, EMC understands RS274NGC (thats 'gcode, the Next Generation Code' ) Ádám Novák wrote: Gentlemen, We have been using CATIA CAM for APT generation for our CNC milling machines (mainly Fanuc). This works great, however EMC does not seem to understand this type of code. As far as I know RS274NGC is the exact interpreter name EMC2 uses, right? RS274NGC is slightly special the specific information is available at NIST http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274NGC_3.web/RS274NGC_3TOC.html it has evolved a bit thru the EMC community http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?AdditionalGCodeFunctionality in general, most readers would think it was 'just gcode' If so, does anyone know of such software that would do the conversion from APT to G code? you might try APT360 a Linux freeware under development http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?AptProgrammingForEMC http://learning.dtpm.unipa.it/emc/it/apt_doc/manual/index.html http://aptos.sourceforge.net/ and listen in at #cam on irc.freenode.net Regards, Adam regards tomp -- 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] 4 to 5 axis milling SW Re: Testing
Dave check Powell's, i got mine used from there http://www.powells.com/ everyone should use powell's for cheap tech books hmm, but i see none avail at powells... amazon 8 used $15.28 seen 12 12 2008 http://www.amazon.com/Numerical-Control-Programming-Irvin-Kral/dp/0136265995 regards tomp Dave Engvall wrote: On Dec 11, 2008, at 12:22 PM, Stuart Stevenson wrote: On Thu, Dec 11, 2008 at 1:55 PM, Dirk bigengin...@gmail.com wrote: On Dec 11, 2008, at 8:10 PM, Chris Radek wrote: On Thu, Dec 11, 2008 at 12:18:45PM -0600, Jon Elson wrote: GOOD point! You (Risto) might want to get in touch with Chris Radek, who has a desktop 5-axis mill at the 2008 CNC workshop. He has some software that generates the toolpaths, but I didn't inquire how he was doing it. I should have. No I don't. The demo gcode was handwritten. John K wrote it. Did you try any generated code? At work we are looking into buying a 5 axis mill. I never thought it would be easy to operate such a machine, but it seems to get harder every day I learn more about it. And we don't even have it yet. I am also curious if Stuart's machine is using handwritten code or that he is using some kind of cam software. If so, I am really curious how the postprocessor was made. http://www.youtube.com/watch? v=35tHYaDUmZQ the Gcode was generated by NCL - an APT style language and CAM system I am using NX for design and engineering. Now that I have my 3axis hobby machine I am trying to figure out how NX cam works. So far, I understand it just a bit, I made a postprocessor for it and all seems to work pretty good. But to me, the step from 3 to 5 axis is not just 2 axis extra. Handwriting code for a 5 sided block might an option, maybe even a pyramid. But I think it is already pretty hard to chamfer all edges of a pyramid for instance. So, you will need something to generate toolpaths, even for parts that don't look very complicated. So, for the 5 axis users, what cam software do you use? How did you get a postprocessor? Dirk if you are using NX by UniGraphics (UG) then you have a fully capable 5 axis CAM system (almost as powerful as NCL) :) learning NX without training will take some time training can get you up to speed much faster training will expose you to all the tools I have no direct experience with the post generator in NX - it is said to be very flexible and powerful Emc usesr interested in APT should check the wiki. Search for apt and vapt. The defining manual is: Numerical Control Programming in APT by I.H. Kral The book is long OP but a search of Amazon will turn up copies. HTH Dave -- 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 -- 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
[Emc-users] dxf2gcode
Emory Smith wrote: ... As Jon said, EMC uses G-Code but many CAD programs have the ability to export in DXF format. If you can do this, then check out: http://www.christian-kohloeffel.homepage.t-online.de/dxf2gocde.html yes it is gocde not gcode :) thanks for the link tomp -- 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] How can I calculate the INPUT_SCALE value?
john, i wasnt aware that emc used floats ther it is unusual in cnc to do so, but thats an observation the 'nice number' refers to the numerator and denomimator which are outside if emc which are inside the driver unless these 2 are nice numbers ( ints divisible by 4 ) then the home pulse delivered to control is longer than the real home pulse this can lead to trouble in homes that do not coincide always. when both are ints divisble by 4, then the home pulse is same size as mfctr intended floating point has to do with emc nice numbers have to do with driver integer counts per user unit of measure might be an advantage to emc because most cnc manufacturers use integers there (Fanuc Heidenhain ) and there are some that use floats (PMAC EMC ) the general public (non-emc?) would think ints when thinking counts per unit of measure fwiw tomp John Kasunich wrote: tomp wrote: ...snip there are an infinite number of screw and gear and ppr combinations that wont yield nice counts per micron so it is possible that you cannot get it with the combination you have assembled Doesn't matter at all. 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
Re: [Emc-users] 2nd Tool Offset
andre, do you mean an X,Y,Z C tool offset? and keep the same program knowing tool 1 is 'center' and tool 2 is dx-1 dy-2 dz+4 ? ( i see no use for dc here, for orienting a drill or jet ) ( tool 2 is mounted forward left of tool1 and longer ) thanks, good thoughts tomp -- 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] tool table.
Dave Dave Engvall wrote: On Dec 2, 2008, at 9:26 PM, Stephen Wille Padnos wrote: Dave Engvall wrote: Hi all, IIUC there is no way to dynamically replace a whole tool table. IOW I must shut down emc, edit the .ini to point to the new tool table and then start emc again. I'm pretty sure you can reload the tool table. If this is so, then you can replace the contents even if you can't change the name of the table that gets loaded. - Steve My intent was to change the name of the tool table to reflect the special job I needed it for. Otherwise I can just use cp to overwrite the old table after stashing it someplace safe. To change the name we need a way to force binding of the new name and that probably isn't possible in a simple way. 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 - 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 could symlinks do it? 1 file always used by emc but that file is a symlink to a file with a useful name just a thought ( hi from hong kong!) tomp - 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] How can I calculate the INPUT_SCALE value?
Howard Howard Chan wrote: Dear all, At first, I used latency-test to check my computer and I set the BASE_PERIOD to 25000. I used Integrator manual to calculate the INPUT_SCALE but it is not correct. My machine requirements: Unit using mm. I hope the max rpm of motor is 1200. I use SANYO DENKI servo motor which has an 2000 ppr internal encoder and max rpm is 3000. The motor mounts a 16T pulley and connects a 36T pulley. http://myweb.polyu.edu.hk/~icwfchan/p2.png 36T pulley mounts a lead screw which is 4 turns per inch http://myweb.polyu.edu.hk/~icwfchan/p3.jpg According to Integrator manual, my calculation is: INPUT_SCALE=2000 * (36/16) * (4 /25.4)=709 but the computer displays x-axis value is not the real-distance value. I try and error to find the value round 1250 Would you mind telling me which part is wrong? Thank you Howard - 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 howard look at the numbers without the formula, just to get the relationships... i think... you have 2.25 turn of motor to get 1 turn of screw ( 36/16 = 2.25) and 1 turn of motor makes 2000PPR which is 8000 counts ( due to quadrature) so for 1 turn of screw you have 18000 counts from motor ( 8000 counts per motor turn * 2.25 motor turns) and 1 turn of screw is 0.250 (inches) which is 6.35mm (0.25 * 25.4 = 6.35 ) so, 6.35mm travel = 18000 count so 6350 microns = 18000 counts so 1um of travel = 18000/6350 = 2.8346457 counts thats a pretty ugly number but the sanyo denkii driver likely has 'electronic gearing' which is just a multiplier and a divider the incoming counts from the encoder is multiplied by the numerator and divided by the denominator and the output counts are reported to the control and there are an infinite number of screw and gear and ppr combinations that wont yield nice counts per micron so it is possible that you cannot get it with the combination you have assembled i'm actually in hk now, but just a visa run, try a spreadsheet to look at how numbers change i was able to get close to 1000 ounts per mmm, but never exact regards tomp - 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] Pluto-P
Jon Elson wrote: Peter C. Wallace wrote: As John says the real problem is getting realtime Ethernet support on the EMC host. As I said before maybe the way to ease into this is just support 1 or a few Ethernet chips, and require the user to have a add-in PCI/PCIe Ethernet card with the required chip. Having fought this problem to some extent with the par port, I can't IMAGINE the headache when a potential customer shows up and you tell him Oh, it only works on computers with a DEC Tulip ethernet chip. Add, he says, How do I tell, sight unseen, whether any particular computer has that specific chip? No, it has to have a bit wider hardware support to be viable. 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 yes looking inside a computer may be difficult for a newbee but it'd be a pci card, not a computer and the chips on the card are pretty visible the one that looks like a deers head logo is popular and cheap RealTek ?? that brand has worked for me since Yggsadril Linux's : regards tomp - 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] Probing with a gimbled head.
Dave, Dave Keeton wrote: Thanks Stuart, I have been asked to build a machine that can digitize complex parts (Landing gear). The catch is that it needs to be a Lights Out Operation - fully automated. The only way I can see to do this is with a gimbled head and probe on a custom built machine. Thanks for looking into it. I think EMC should be able to do this. Dave On Thu, 2008-11-27 at 22:00 -0600, Stuart Stevenson wrote: Dave, As soon as I get the cinci running and comped I will start working on the probing. If you position the gimbaled head and then qualify the probe to a standard you will have no issues of accuracy in the gimbaled head. You would have access and accuracy. On Thu, Nov 27, 2008 at 8:50 AM, Dave Keeton [EMAIL PROTECTED] wrote: How well does probing and digitizing with a gimbled type spindle work? Has any one done this. I would like to use it for digitizing complex parts. Thanks in advance for any ideas offered... 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 - 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 thats an interesting project i have done similar for blades and roots in turbines the castings vary more than expected but i always used an 'envelope' to start from ( an 'it oughtta be inside this volume' boundary ) ( and normals for each probe ) so, speeding up the process was always making the boundary closer to the real but, the reason they needed probing was... the real surfaces fell outside their original expectations ;) otherwise every one could just work to 'the numbers' could you say something about how you approach it? thanks tomp - 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] Success driving Panasonic Minas S (MUMS) brushless motors
Jon, Jon Elson wrote: Please excuse a short commercial plug Dave Engvall gave me a Panasonic brushless motor at the CNC Workshop to see if I could figure out how to run it. It took me a LONG time to get around to figure it out, but I have finally got it! It has a serial output that contains the commutation signals, so I have to add a little decoder for that signal. Otherwise, i have gotten it to work with my Universal PWM Controller and brushless PWM Servo amp. It works quite smoothly, better than a number of other brushless motors I've tried. The motor I have is a Panasonic MUMS042A1A, but I would assume all the motors in that Minas S series would work as well. Jon Elson - 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 great, i hope it works for the whole MINAS series i just went thru some hell because a supplied panasonic minas series A4 MHMD motor and mating MCDD driver couldnt be found in USA it was true, the MHMD motor is only for the asian A4C series and is called the MSMD in usa ( the 'A4' series ) now isnt that intuitive? ;) anyway, you more than likely have the basis to use Yaskawa and SureServo ( automation direct 'koyo ) also in one off pricing, sure servo is a good deal in any quantity ( say 6 of same motor and driver) then the others win so for the emc crowd, often automation direct will be desirable unless theres some group buy like we did on the mesa 5i20's anyway best of luck tomp - 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] Tune up- HAL Oscilloscope./NEW picture
Kirk Kirk Wallace wrote: On Sun, 2008-11-30 at 20:20 -0700, [EMAIL PROTECTED] wrote: Hi I reduced Default_valacity =1. Max_velacity =2.0 Default_acceleration = 2.0 Max_acceleration =3.0 The picture is: www.conceptmachinery.com/Sh12.jpg I reduced most of them by 2-3 times and graph looks good. I will post it in 20 minutes. I am interesting why my drive can not output more voltage? Not power enough? It is SD-94 8 amp constant from servo dynamic http://www.servodynamics.com/sd94p_servodrive.html thanks Aram This drive has its own PID feedback built in. You may need to decide which PID loopback system you want to use, EMC2 or servo drive. I would go with a dumb motor amp myself. Or, others here have a way to deal with smart drivers. Or, I may be, all together, off base. Kirk http://www.wallacecompany.com/machine_shop/ - 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 you're right often a cnc control loop will fight a driver control loop because there's 2 loops controlling one process and one must be dummied up so the other can be boss and usually the cnc control cannot be dummied so the driver P gain gets 'weakened' ( i and d may get nulled so the driver is basically P ) anyway you mention a 'dumb' driver anything you know of for AC drives? i've done this with lots of copley's but those were dc brushed amps thanks tomp - 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] Tune up- HAL Oscilloscope./NEW picture
aram [EMAIL PROTECTED] wrote: On Sun, 2008-11-30 at 19:52 -0800, Kirk Wallace wrote: On Sun, 2008-11-30 at 20:20 -0700, [EMAIL PROTECTED] wrote: Hi I reduced Default_valacity =1. Max_velacity =2.0 Default_acceleration = 2.0 Max_acceleration =3.0 The picture is: www.conceptmachinery.com/Sh12.jpg I reduced most of them by 2-3 times and graph looks good. I will post it in 20 minutes. I am interesting why my drive can not output more voltage? Not power enough? It is SD-94 8 amp constant from servo dynamic http://www.servodynamics.com/sd94p_servodrive.html thanks Aram This drive has its own PID feedback built in. You may need to decide which PID loopback system you want to use, EMC2 or servo drive. I would go with a dumb motor amp myself. Or, others here have a way to deal with smart drivers. Or, I may be, all together, off base. Kirk http://www.wallacecompany.com/machine_shop/ Oops, I just realized you are driving brushless motors, so maybe you need to remove the EMC2 feedback PID, drive the driver from EMC2 in open loop like a stepper or DC Gecko drive. The PID tuning will be done on the brushless drive using the vendors tuning software. (?) why do i need vender software? EMC2 will close loop. SD94 come with package that includes stuff that i do not need. It is good but has special sofware etc that i do not need. Kirk http://www.wallacecompany.com/machine_shop/ - 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 you are right emc will close your loop kirk suggests that the driver tuning may be complicated by emc control he is correct the emc loop contains the driver loop but dont worry, it is a small issue begin by using the manfacturer's tuning instructions to move nice without emc then use emc to move , and adjust the parameters for your best result ( this is exactly the course you have followed ) there is a small issue of performance dont let small things stop the big thing :) your system will be stable enough to adjust better at a later time it will not be all wrong it will be good perfect is very difficult :) begin with good! best of luck tomp - 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 need to connect my Voltmeter to actually read....
Olusegun Peter C. Wallace wrote: On Sat, 29 Nov 2008, Olusegun A. wrote: Date: Sat, 29 Nov 2008 11:46:37 -0800 (PST) From: Olusegun A. [EMAIL PROTECTED] To: EMCuser2list emc-users@lists.sourceforge.net Subject: Re: [Emc-users] I need to connect my Voltmeter to actually read I'm actually trying to read an analogue signal (High Voltage - say 1000VAC) being applied to my heavy motor. Do I need an ADC converter or what is the procedure? Olusegun Abode +234 8037045535 Email:[EMAIL PROTECTED] Please Please Please do not connect _ANYTHING_ on your computer to High voltage AC motor leads! This requires very specialized equipment with high isolation voltage. Doing this without full knowledge of the hazards you are dealing with could be instantly fatal! EMC needs more users not fewer... Peter Wallace Mesa Electronics ?? wheres bunny ?? - 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 1) make the 1000V smaller and less powerful ( transformer ?, current limit resistor?) 2) maybe convert it to DC 2a) maybe other conditioning, i dont know frequenct or even the nature of the signal 3) read the small weak value with an ADC 4) connect ADC output (small voltage binary image) to emc :) you can see #4 is very far from #1 you need to test each step before going to next step there are lots of internet resources about how to observe voltage and current wit computers best of luck, tomp - 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] Tune up- HAL Oscilloscope.
aram 1) congratulations!, good work, nice machine, real servos, lotsa work done 2) keep trying, dont worry about english, keep asking and keep calm, ( i am in taiwan, i am american working with chinese so i know the language problem :) ) 3) post a bigger picture, i grabbed the picture from your site, then enlarged it 4 times, but could not read the signal names. are the signals... ? x.output ? pid.0.error ? xpos.??? did someone suggest which signals to trace? if not, than ask on the list or irc also post the manufacturer and models of your servo amplifier and drive best o luck tomp - 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] Tune up- HAL Oscilloscope.
aram, [EMAIL PROTECTED] wrote: On Fri, 2008-11-28 at 21:12 -0700, [EMAIL PROTECTED] wrote: ... snip Contact Us does not work well. I use that web to deliver Screenshot of HAL Oscilloscope only. Oh so http://www.conceptmachinery.com/ is not your formal website? Another link you might try for just the screen shot could be: http://www.conceptmachinery.com/TUNEup.jpg Very good idea! Thanks. i need add picture, do i need put address of in INDEX also img src=TUNEup.jpg alt=Tuneup AC servo /? aram, you can just remove the old picture and name the new bigger picture with old name or take a new bigger picture , lets call it bigTUNEup.jpg, store it in same directory as old picture then edit the web page to img src=bigTUNEup.jpg alt=Bigger picture of Tuneup AC servo / best o luck tomp Is there a chance we could get a bigger version? Thanks. --- Kirk http://www.wallacecompany.com/machine_shop/ - 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] AUTO mode ERROR?
Kent, Kent A. Reed wrote: Gentle persons: Almost as soon as the Unix coding began at Bell Labs nearly 40 years ago, there arose a need for to examine the contents of various files, for example, because there were as many different character encoding schemes as there were computer manufacturers in those days. The primitive but powerful utility program od (for octal dump) was created for this purpose. I've found it in every distribution of Unix/Linux I've ever used and I highly recommend using it to examine any questionable file. You can find out instantly if questionable character coding exists in your file. Use man od to get specifics. Regards, Kent yes, i would reccommend using some bin editor/hex dump but was unfamiliar with od i might suggest using 'mc' ( midnight commander) and 'viewing the file and changing from ascii to hex the left window woud be hex the right window woud be ascii ( if possible ) any 'goofy' characters could be spotted and the reason why mc may not be a real programmers tool but it gets this job done best of luck tomp - 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] OT G-code filter for small line segments
Jim apt 360 can chop the output into nn.n length segments it'd be up to the control to blend the chopped up gcode isnt blended i've used it to get me .0002 lengths its just a long program then, no arcs just linear segments very close to true path :) regards tomp Jim Fleig - CNC Services wrote: Is anyone aware of a program that would receive G-code with very small line segments (.002 long) and blend them together to form longer lines and or arcs? Jim - 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] AUTO mode ERROR?
aram wait until you get no 'bad character' message maybe bad action caused by bad command get clean command to cnc first ( get no 'bad character' first ) you cannot see the character, but the emc program can best o luck tomp [EMAIL PROTECTED] wrote: Hi I used g editor and new error – bad character ‘134682144 sed’ Program was % G17 G20 G40 G80 G49 G57 G90 G1 F5. X0 Y0 Z0 G91 X-1.5 F3. % The other problem is that – line 4 out of range because x-1.5 When I change x-1.5 to x1.5 machine start read only last line. Why emc2 does not read G57 G90 G1 F5. X0 Y0 Z0? Can I move cursor and start from specific line? Thanks aram I have verified that saving a Text or Text Encoded file from openoffice 2.4 is incompatible with emc. openoffice writes something at the beginning of the file called a unicode byte order mark; don't worry if you don't understand what that means, but *do* understand that openoffice will apparently not save files in the form required by emc. Use a text editor (not a word processor or typesetting program like openoffice write). gedit is a text editor that should be installed on an ubuntu machine, and many people use it successfully to write gcode programs. 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 - 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] Material
Heinz Reimer wrote: An Pham Duc wrote: I have found a paper Enhanced Machine Controller Architecture Overview but until now I do not have it. Could someone having can share it with me - 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 ftp://ftp.isd.mel.nist.gov/pub/NISTIR_5331.pdf Regards HR - 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 An Phu Duc, Heinz, imo that document is good reading, but that document does not describe the current software/ architecture status of emc2 i dont know what your interest is, but its not an emc2 roadmap regards tomp - 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] Syncing an EMC program to other CNC system
Stephen Wille Padnos wrote: Jon Elson wrote: OK, now that I have a bunch of other problems fixed, I need to see how to implement the title question. This customer has a Haas mini-mill, and wants to use EMC to control an indexing head. So, he will have the XYZ moves programmed in the Haas, and the A axis programmed in EMC. When he needs the next A position, he has the Haas send a contact closure to a digital input on the PWM controller, which I think can wake it out of an optional stop, and when it gets to the next position, it sends a contact closure back to the Haas to continue machining. Has anyone done this? I'm a little vague on what the G-code for this would look like on the EMC side, and which hal pins one would hook the digital I/O up to. (ISTR there has been development in this area just within the last 2 weeks or so.) This sounds like a HAL problem more than an EMC problem. The only difficult part is getting the number of degrees to move into the HAL. This is no more difficult than pushing G-code to move the correct amount. Another option: a simple indexing component should be easy to write. The limit3 component will output an accel and vel-limited position command given a step input, so you don't even need to write motion profiling code in the indexer component. The output of the limit3 would then be fed to PID just as you do with EMC. - Steve - 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 very interesting, HAL sounds like the way to use a robot as a tool changer not really inter-operating, but simple handshaking and 'interleaved' programs where robot runs, then machine runs, then robot runs then... regards tomp - 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] Sanyo Denki power supply
Jim Coleman wrote: Hey everyone, I just got the wires replaced inside the tachogenerator on one of my servo motors (cat chewed them in half while it was sitting out where i was working), and I think it's time to get everything hooked up and see what happens when i feed the amp a Vcmd. My first hangup is the wiring for the power supply. I guess it's not a hangup, but more of a double-check. On the inputs to the suppley, the terminals are labeled R, S, T, E, COM, PON, and PAL. R, S, T, and are the 3 phase input and ground. The mill's manual specs say there is a Power ON signal, contact opened on normal power continuity and Power error, contact short-circuited on pegenerative abnormality or open collector TrON So after reading this, I'd guess that PON goes float during normal operation, and is pulled to ground by relay contact when theres problem? and for PAL, I'd guess that... well... the same thing? just a guess, power err = Power ALarm Is it me not comprehending what little info I have? I'm hoping that for testing, I wont need to use these at all. If anyone knows where to find sanyo denki BL-super manuals or datasheets or any info at all, I'll be extremely grateful if you share. I've googled and all i can find is people selling them. the part numbers are: Power supply: BP060RXB Amps, X+Y: 27BA030FXTH1 Amp, Z: 27BA050FXTH2 Motors X,Y:20BM090MXP42 as far as whether or not the supply will run on single phase power, the 3 phases run from the breaker to a rectifier, http://www.datasheetcatalog.com/datasheets_pdf/R/M/3/0/RM30TA-H.shtml so i think it would be fine running single phase. I'm still trying to figure out where the PON and PAL wires run, but there isnt much room to see in there, let alone poke my fat fingers around. Dont worry, the capacitor is fully discharged :) The machine was built late 1987, if this helps any at all. I really dont know how i can show my appreciation for all the help you guys give, and I cant wait till i can afford to go to fest and meet some of you. If I could bring my machine, I would but it's WAYYY too big for that, but the servos and amps will fit in the trunk of the neon :D - 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] Acceleration
Jimmy, 'single radial acc' does not exist in emc the quote you mentioned was in context of 'cnc controls' , not 'emc' regards tomp Jimmy Schneiderman wrote: Dear Tomp, Where are located linear accelation parameter per linear axis and where is located the single radial accelation parameter for all angular axis in the LinuxCNC Program? Regards, Jimmy 2008/11/7, tomp [EMAIL PROTECTED]: Jeff Epler wrote: For trivial kinematics machines, emc should always stay within the inifile acceleration limits. If it doesn't, there's a bug. The main acceleration-related difference I recall for arcs is that the centripetal acceleration required to follow the arc may affect the maximum attainable velocity. Can you be more specific about what behavior you're looking for, and why it's important? 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 often, cnc's have linear acc parameter per linear axis and have a single radial acc parameter for all angular axis regards tomp - 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] Acceleration
Jeff Epler wrote: For trivial kinematics machines, emc should always stay within the inifile acceleration limits. If it doesn't, there's a bug. The main acceleration-related difference I recall for arcs is that the centripetal acceleration required to follow the arc may affect the maximum attainable velocity. Can you be more specific about what behavior you're looking for, and why it's important? 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 often, cnc's have linear acc parameter per linear axis and have a single radial acc parameter for all angular axis regards tomp - 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] Free 3D CADs on Linux WAS: BRL-CAD
Dave Engvall wrote: On Nov 4, 2008, at 8:10 AM, Mark Wendt (Contractor) wrote: At 11:03 AM 11/4/2008, you wrote: Just to sound like a broken record Synergy runs on Linux. You get 2.5 D and wireframe for free. It is the CAM part that cost $$. Just hit the Weber Systems site and download. BTW- it likes Hardy Heron Ubuntu.:-) My problem with Synergy is that is such a powerful package I'm not bright enough to use much of it. And no I don't have a financial interest in Weber Systems, darned! Dave Dave, I think I've go that software on my EMC machine right now. I'd forgotten all about it. Wonder if it'll read AutoCAD dwg files? Hmmm, may have to play around with it. Mark DXF, DWG, and IGES 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 - 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 dwg too? thanks dave, will try that can i spin a 3d model and see if things 'fit i'm going to look thx again' tomp - 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] Free 3D CADs on Linux WAS: BRL-CAD
Mark, Mark Wendt (Contractor) wrote: At 03:41 PM 11/3/2008, you wrote: Yep, got the same t-shirt. But given a choice, I will use a non-M$ based products! tomp wrote: Kent A. Reed wrote: Gentle persons: snippage Regards, Kent 'Zackly. Once I get my system all up and running, I want to go completely *nix on my home 'pooters. The only thing that's really keeping me beholden to Winders is my AutoCAD. If I can find a decent replacement for it that works on *nix, I'm gonna be one happy camper. Mark - 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 try vmware and winxp or win2k. i use it with win2k and run Acad MDT as fast as native , yet can switch to other desktops running editors, web, email etc at same time :) regards TomP - 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] Free 3D CADs on Linux WAS: BRL-CAD
Kent A. Reed wrote: Gentle persons: I quite understand the desire to find CAD software that (1) is free as in beer and (2) runs directly in Linux. I yield to no one in my ardor for open source in general and GNU/Linux in particular. As I grow older, however, I find that pragmatism is overtaking idealism. With respect to CAD, two other characteristics are becoming paramount: (1) how easy is it for me to use a particular program without fuss and bother to design precise mechanical parts and (2) how easy is it for me to extract the design in a usable format. With respect to these characteristics, and especially the latter, I have blown hot and cold over various open-source CAD applications. Let me discuss a alternative that is not open source but can be free to the user. In the MS Windows domain, there is a very competent commercial 3D solid modeller called Alibre Design, for which there is a free lite version called Alibre Design Express (see http://www.alibre.com for details). In the years before I retired, I was an early adopter of Alibre Design to create some mechanical parts and assemblies in an underfunded project because the package was much less expensive than its competitors like SolidWorks, SolidEdge, ProEngineer, or Autodesk Inventor for similar features. The free Alibre Design Express has some restrictions, of course, but it retains the good user interface and the ability to export 3D models in well-known formats like IGES, SAT, and STEP that can be post-processed easily. (For that matter, if you've got the $$, Alibre has recently released a companion CAM package and also a woodworking package. They also have various offers for at home use of their non-free packages that I haven't explored.) I run Alibre Design Express on a Windows XP box to design parts. I haven't tried to run it over WINE on a Linux box, but then the el-cheapo boxes I have running Linux have neither the horsepower or the graphics capability needed anyway. Although my Windows XP box is reasonably well equipped and set up to dual boot into several different Linux distributions, it seems pointless to try running Alibre Design Express within a virtual Windows XP environment in Linux for the obvious reason that it's already running fine in Windows XP. Naturally, your situation may be entirely different but if you haven't tried this product I think you should. Regards, Kent PS - Leaving aside its user interface, SALOME GEOM has very good data import/export capability because it was intended to support interoperability between CAD modeling and computation software, its internal geometry functions are excellent, and, wonder of wonders, it exposes all its functions via a Python API, so I'm thinking seriously about how I could use it for script-driven as opposed to gui-driven design. Alibre Design and its commercial competitors expose a good deal of their functionality using MS Windows technologies such as COM and .NET, so one could drive them via Python as well, but somehow that's not as alluring to me. PPS - FreeCAD (no, not that one, the other one; see http://juergen-riegel.net/FreeCAD/Docu/index.php?title=Main_Page) might become the open-source 3D modeling application of choice, but it's still very early in its development and many claimed features appear to be planned rather than actual. The home page is peppered with phrases like will have... and will be PPPS - I have no connection with Alibre or any other CAD-application provider. - 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 haha I find that pragmatism is overtaking idealism. i wear a button that says My karma ran over my dogma (pushing 60 and not so idealistic now) regards TomP craigslist.com.tw/apa/882357191.html - 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] Parallel port in the future - query
Jon Elson wrote: tomp wrote: maybe this is of interest RT-Firewire on Linux, using Xenomai (RTAI ) used for robotics, for realtime control of positioning systems it also enables RTnet over firewire several nice papers at http://www.rtfirewire.org Practically all PCs have USB and Ethernet. The hardware is CHEAP! After some searching, the Real time Linux USB projects do NOT seem to be very active, unfortunately. Anybody know anything about what is going on with them? There is a USB4RT and a USB 2.0 for RT project. The former was last updated in 2005, the latter in 2006. That seems to indicate they are dead. With all the new hardware out, it would seem there would need to be some maintenance work, at least. Firewire is a rare thing, and not so cheap. 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 i dont think firewire card is rare or expensive siig syba other mfctrs tiger direct 20$ mirco center 20$ newegg 12.99$ so not rare and not expensive more important, it already works realtime linux rtai for motion control regards tomp - 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] Parallel port in the future - query
Kirk Wallace wrote: On Fri, 2008-10-31 at 17:57 +, Dave Caroline wrote: I have a feeling if we learn enough about USB2 a fixed bi directional micro frame protocol could be deterministic for EMC I need a second and third read of the spec Dave Caroline Wasn't there some talk, last year, about real-time Ethernet? Ethernet, to my uneducated brain, seems much more appealing than USB. Another thought, is that as long as there are desktop PC's, there will be slots (maybe?) and for real-time, a slot card controller would be the most efficient. I guess this doesn't address the bare-bones systems were cost and simplicity are the major issues. So far, there have always been parallel port cards to fit the latest slots, so maybe it's not yet worth worrying about? I wonder if there will be a time when EMC2 will need to branch, to cater to different system types? How long will those, that want to do the most with the least, and those that want to do the most with the most, be able to use the same EMC? Who made the coffee, this morning? Kirk - 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 rt-ethernet is enabled by the rt-firewire used with rtai's xenomai http://www.rtfirewire.org/ Via the implementation of real-time Ethernet-over-FireWire, an application-layer module emulating Ethernet interface over FireWire hardware, RT-FireWire enables RTnet http://www.rtnet.org, a hard real-time communication framework over Ethernet to work on Firewire. reghards tomp - 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] Parallel port in the future - query
fan alan wrote: The fan on my laptop quit the other day so I started looking around for a replacement computer. Looking on the Ebuyer website here in the UK it seems that most new laptops (especially the smaller ones) now only have usb outputs. There is a wonderful little acer computer just released very small, onboard radio network and cheap, but it just has usb ports so is not suitable. I use a laptop because it is portable between my home and workshop (rather too grand a title , its a shed). I don't want to dedicate a large pc box to run my modest cnc needs (maybe I will have to) and I don't want to have to struggle carrying a large pc box between my home office and shed. So any suggestions for a cheap replacement computer. What is the smallest, cheapest desktop or laptop with a parallel port? I thought about using a pc/104 card but again here in the UK they seem to be quite expensive? Has anyone got experience using pc/104 ? So really my query is also about the future. Where will emc go if parallel ports become a thing of the past? Alan Alan fan died on my HP ze1250 laptop I lay it on top of a $1.98 110V fan still working 2 yrs later maybe worth a try signed cheap bastard ;) tomp - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Latency Test
Dave Engvall wrote: On Oct 30, 2008, at 8:41 AM, tomp wrote: Stephen Wille Padnos wrote: Dave Houghton wrote: Hello everyone I didn't get far trying to set up EMC2 I decided to do the Latency Test first, having read both sets of instructions. 'Configuration Wizard for Steeper Machines' 'EMC2 Getting Started' both have identical instructions regarding the Latency Test. Quote To run the test, from Applications/Accessories/Terminal (Ubuntu) open a shell and run the following command Emc2$ latency-test The following is what happens when I run it from terminal. [EMAIL PROTECTED]:~$ emc2$ latency-test In general, you're supposed to type only what's after the $ (or #, if you're supposed to do things as root). Everything before the $ is the prompt printed by the terminal program. So you should be typing only latency-test (without the quotes). There should be a conventions used in this manual section somewhere, but I'm not sure exactly where it is (if it does exist). - Steve - 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 Dave, its a good idea to run the tests please run it for at least a day, then evaluate report the results. i found suitable results with one and two hour tests but unnacceptable results after a day and horrible results after returning from a week trip. your hardware will vary the results of course i think not many people run the tests as long as a real cnc control is run ( forever ;) best of luck tomp Hi, Interesting idea to run for a long time. My numbers get bad enough even in a short time. I've installed the patched .ko for Ubuntu 6.06 smi and that improved things greatly. However, I'm still getting realtime messages. Can someone point me to a checklist of other things to suppress and how to do it? Many thanks in advance. 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 - 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 Dave thanks i didnt know there was a patched smi module it seemed the thread said it was handled by a bios setting thanks, i'll see if that helps otherwise, i used the latency killer page from rtai http://www.rtai.dk/cgi-bin/gratiswiki.pl?Latency_Killer regards TomP - 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] Latency Test
Dave Houghton wrote: -Original Message- From: Wayne Parks [mailto:[EMAIL PROTECTED] Sent: 30 October 2008 06:25 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Latency Test Dave Houghton wrote: In general, you're supposed to type only what's after the $ (or #, if you're supposed to do things as root). Everything before the $ is the prompt printed by the terminal program. So you should be typing only latency-test (without the quotes). What are numbers are we looking for (whats acceptablewhat's not)? mine are as follows: Servo Thread: 12897 Base Thread:12742 Hi Wayne Yes I've got it, thanks Wayne, and its running Servo Thread 9631 Base Thread 11979 Now it says I should abuse the computer to find the worst case. But do not run EMC2 or Stepconf. Right now I have two questions. 1. Why would I what to do any thing to make it worst? 2. Why can I not run EMC2 and/or Stepconf. Thanks 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 the wiki page 'latency-test' says quote Let the test run for at least 15 minutes while you run glxgears or a similar application to stress the cpu. Move around windows, surf the web, copy files, play music etc. end quote i used 3 invocations of glxgears full screen, openoffice, gimp,web surfing, irc client and others items in my tests all at once i think it was well abused tomp - 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] Latency Test
Dave Houghton wrote: ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users the wiki page 'latency-test' says quote Let the test run for at least 15 minutes while you run glxgears or a similar application to stress the cpu. Move around windows, surf the web, copy files, play music etc. end quote i used 3 invocations of glxgears full screen, openoffice, gimp,web surfing, irc client and others items in my tests all at once i think it was well abused tomp -- Hi tomp I can see the reasoning. In my case I have a dedicated computer just for EMC2/ Ubuntu, it will just be used for CNC. Many Thanks 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 dave, yes, my test was running those programs but just idle, i was gone for a week and while idle it went 'over the top' 32K so (imo) it doesnt matter much that you would never use those apps i wasnt there to touch a key/open a file/drag a screen for a week it was the 'system' that made the numbers go high it was 'unexpected' end my 2c tomp - 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] Parallel port in the future - query
Jim Combs wrote: BUT, USB is a shared resource. Up to 127 devices can be on the bus and there is no guarantee of timed delivery. You could identify the device a as a video interface and the USB bus would allocate specific bandwidth to an interface. Making a USB based IO EMC2 hardware controller would be the way to go. I know enough to do the hardware side, but not enough to do the Ubuntu side. Then the Parallel port could go away and RIP. It has served it's time VERY WELL! Dave Caroline dave.thearchivis [EMAIL PROTECTED] To Enhanced Machine Controller (EMC) 10/30/2008 12:50 emc-users@lists.sourceforge.net PM cc Subject Please respond to Re: [Emc-users] Parallel port in Enhanced Machine the future - query Controller \(EMC\) [EMAIL PROTECTED] sourceforge.net The amount of data one could put in a USB microframe, may allow for more loops per frame so make it easier Dave Caroline - 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 Jim, you may be interested in 'determinism' this is a characteristic of communications needed for realtime operation firewire is determinisitic usb is not (in general, usb is not considered suitable for realtime by professionals in the industry) you have a good idea, but maybe usb is not the route and maybe firewire is not the route but big companies have spents lots to find this out it may be expensive for you to find the same answer. or you may find what they missed best o luck tomp - 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] Latency Test
Dave Houghton wrote: Tomp wrote dave, yes, my test was running those programs but just idle, i was gone for a week and while idle it went 'over the top' 32K so (imo) it doesnt matter much that you would never use those apps i wasnt there to touch a key/open a file/drag a screen for a week it was the 'system' that made the numbers go high it was 'unexpected' end my 2c tomp tomp, Now that's very off putting, I was sitting here quite pleased with myself. Do you run a machine on that computer, did you change anything on the computer or did you just run it and hope for the best. Regards 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 dave sorry if it sounds fatalistic i had tried every trick known before this test, and began with a system that seemed a good bet i ran no cnc at same time the results on the wiki are my best 1 day run, i think they are marginal for stepper system the result on same box after that week run was unacceptable to me (32K) the point is, testing is a good thing to do and to do well the result might not make you happy now\but it would make you ^%^% later ;) anyway, it takes no effort to let it cook while you plan the cnc you will hook up to a good unit let it cook and see what happens, if other's experience hold true, you'll have a certified emc2 box :) regards tomp - 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] Latency Test
Dave Engvall wrote: On Oct 30, 2008, at 9:06 PM, John Kasunich wrote: Dave Engvall wrote: ay have to try something else. Will check for a menu. After the comments (JMK) this afternoon about problems with the Mazak at Galesburg I tried running a program on my machine while doing other things. The program was a pretty generic mill a bunch of identical blocks, first roughing at 4.5 ipm and the finishing at more like 12 ipm. Meanwhile I fired up the web browser since that makes the numbers on my latency test increase about as fast and anything I can do. Didn't even get a bump; even on the rapids between blocks. So while my latency numbers are really horrible, i.e. in the 96K range, I can't demonstrate any degradation in the performance of the mill. 96K is NOT horrible at all on a servo machine. It is step generation that requires latencies of a few microseconds. Servo machines with hardware encoder counters and DACs only need to run EMC's servo thread, at 1mS. Latencies of a hundred microseconds aren't going to seriously hurt things. The bumps at Galesburg were the result of latencies of several milliseconds, not a hundred microseconds or so. Regards, John Kasunich Thanks John. I guess I can quit worrying about the messages and concentrate on making parts. 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 - 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 yes, thanks John, i never read an acceptable magnitude for latency in a servo system TomP - 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] Parallel port in the future - query
Jon, Jon Elson wrote: John Kasunich wrote: This subject seems to come up every month or two. The answer is and will probably always be the same. Yes, it is possible to make a box that lives outside the PC and can queue up enough motion in advance that it doesn't require realtime performance from the PC. I agree that taking the PC completely out of the real-time game is a mistake in two senses. First, we've already done the heavy lifting, and it works. Second is, if you are NOT real-time, then there is no upper bound to latency, and one day, the system won't get the data there in time, and the buffer will run empty. The machine will crash to a stop, possibly with disasterous consequences. But, there might be another way. Keep EMC real-time, but have a USB device that can pump out parallel bytes from a FIFO. This requires EMC to sync to the USB clock instead of the system timer. Every tick of that clock, a whole batch of step pulses, just like they are spoon-fed to the parallel port now, would be buffered and sent to the USB device to be de-buffered at a constant rate such that as the last byte was sent, the next buffer would be ready. I think the Cypress CY7C68013 can do all this in hardware, once configured. You can do that if you want, but you lose one of the big benefits of PC based control. On a PC based control, it is easy to find problems, add features, and update the software. If you embed everything in some external box with no keyboard, no screen, no development tools, etc, you are rather locked down. It's one thing to embed simple stuff that can be tested and proven robust, and that is unlikely to change. It is much tougher to embed complex code that will need to be debugged and changed to meet evolving needs. Well, using the Cypress chip, or some other USB-FIFO device, is an intermediate step. If it only has a one ms buffer, the user would never know the difference. And, it would not be moving all the motion control of EMC into some external device, it is just a FIFO and an interface device. Of course, it needs real-time determinism on the USB. I have no idea what state that is in, but I think there has been some work done in that area. A quick Google search appears to show that EVERY document containing the text USB also contains real time, using it to means something happening within a couple of seconds! UGH! But, it looks like Jan Kiszka, who did the rt-net package also has a USB stack for rtai, originally started by Joerge Langenberg. I should point out that I am NOT volunteering for this project, although after I get some hardware and software expertise with this Cypress chip, I might be willing to contribute to such a project. I have a bigger interest in possibly using this chip to connect my other boards to a PC without parallel ports. It might also increase the performance, as the CPU having to process each byte laboriously through the parallel port is becoming a bottleneck. But, I don't know if the chip, or the USB model, is really conducive to the existing boards' model of communication. The fact that it can do one-way FIFO transfers without intervention of the slow 8051 CPU is tantalizing, though. With some additional FPGA logic to format blocks of data to be read from the FPGA to the CPU, though, I think it MIGHT work. I need to learn more about how many balls this chip can keep in the air at once. But, the idea is : Every micro-frame, the FPGA sends encoder position and digital inputs to the CPU, and every micro-frame, EMC sends new velocity and digital output info the the FPGA, based on the last data it processed. It would always be one microframe out of sync, as the commands it is sending to the FPGA are based on readings taken 2 microframes ago. But, as long as it is deterministic, it should work. 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 maybe this is of interest RT-Firewire on Linux, using Xenomai (RTAI ) used for robotics, for realtime control of positioning systems it also enables RTnet over firewire several nice papers at http://www.rtfirewire.org regards TomP - 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] Some hints for a new (but enthusiastic) user?
Kevin please read the information that was suggested closely you said If I were able to use an encoder on the z-axis for position control and one on the motor (not directly coupled to the axis) for velocity control, i think the ini file that was suggested has BOTH encoders connected as position feedback that is a complexity that you may not want ( one adjusting backlash or cosine err of other) i do not think the suggested ini will use the rotary for 'just velocity control' this is further confused by referring to encoders versus linear encoders both linear and rotary are encoders, its just a few more letters to say exactly what you mean. unfortunately this naming is common in CNC what you described (imo) uses linear encoder feedback in the CNC PID loop but uses the rotary feedback in the amplifier's velocity loop ( the CNC is not aware of the rotary ) if you connect the rotary encoder to a suitable amplifier and DO NOT pass the rotary encoder back to the CNC, then you are on the right path. You WOULD pass the linear directly to the CNC. maybe you want other wise but you describe a fairly common scenario. best o luck tomp - 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?
not a critique the man asked for something else Stuart Stevenson wrote: note the wiki page - critique as necessary :) On Fri, Oct 24, 2008 at 6:56 PM, tomp [EMAIL PROTECTED] wrote: Kevin please read the information that was suggested closely you said If I were able to use an encoder on the z-axis for position control and one on the motor (not directly coupled to the axis) for velocity control, i think the ini file that was suggested has BOTH encoders connected as position feedback that is a complexity that you may not want ( one adjusting backlash or cosine err of other) i do not think the suggested ini will use the rotary for 'just velocity control' this is further confused by referring to encoders versus linear encoders both linear and rotary are encoders, its just a few more letters to say exactly what you mean. unfortunately this naming is common in CNC what you described (imo) uses linear encoder feedback in the CNC PID loop but uses the rotary feedback in the amplifier's velocity loop ( the CNC is not aware of the rotary ) if you connect the rotary encoder to a suitable amplifier and DO NOT pass the rotary encoder back to the CNC, then you are on the right path. You WOULD pass the linear directly to the CNC. maybe you want other wise but you describe a fairly common scenario. best o luck tomp - 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] again - lead screw compensation
stuart unless the amp can sense the backlash, it cant act on it i doubt it has encoder plug , and even if it did, i dont know of an amp that'd comp blash tomp Stuart Stevenson wrote: Gentlemen, I have been thinking (I know - dangerous :) ). Is it possible the SCR amp has backlash comp? It has a bunch of pots on it. thanks Stuart - 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] Pentium II and ubuntu
Tod, latency is not in ubuntu or emc its in hardware that takes control of the system communications when emc needs to do hear or say something hth tomp Tod Spooner wrote: Hello I have managed to find the cause of the install crash. It seems as though the hard drive had several bad sectors which caused the ubuntu install to fail. To ubuntus credit the install failed with style and included an error message and a return to the live CD desktop. I now have ubuntu installed and emc2 running on my pentium II 333Mhz machine. Can ubuntu be pared down to the bare minimum in order to improve latancy? Cheers _ - 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] SMI-Like latency problems that don't respond to rtapi_smi.ko fix
happy birthday Gene ! - 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
