Re: [Emc-users] How to set certain AXIS settings to defaults?
[TRAJ] DEFAULT_LINEAR_VELOCITY = DEFAULT_ANGULAR_VELOCITY = Interesting. I don't have DEFAULT_LINEAR_VELOCITY, but I do have DEFAULT_VELOCITY, which seems to be the same. Has the name changed, or does EMC accept either? I had been skipping over those ini values, because they're wildly different from what I see as the startup values in EMC. Now I see why. The ini file should be IPS, whereas EMC's sliders show IPM. That's why I was getting in the 1300s in EMC for my DEFAULT_VELOCITY = 22. That doesn't explain why it's 1312 in EMC (22 * 60 = 1320), but at least it's close, and I can set more realistic values now. Awesome. Also, are any values NOT in the default install? I seem to recall in my travels finding some variables that weren't anywhere in my config file. It makes me wonder what cool features I might be missing. Maybe there's a list I haven't found yet? delete /usr/share/axis/images/axis.ngc or set the environment variable AXIS_OPEN_FILE to the ngc you want to open as default It doesn't seem to be respecting my environment variable here, even if I immediately run '$ emc' after setting it in the same shell. I haven't tried the file delete trick yet, but am glad to know where it resides now. Thanks. Sadly, the EMC2 AXIS default file is also set to run at a higher speed than my sad little machine can handle This isn't a problem with EMC2. Your machine's MAX_VELOCITY is configured wrong. The machine should not be able to lose steps simply by being commanded too fast. Why would you want to command the machine to move faster than is physically possible? I wouldn't! I just haven't managed to understand all of the settings yet. I've read a lot, and have toyed with things like MAX_VELOCITY (which is at 30 currently - no wonder it seems limitless! That's 1800 IPM!), but I've gotten such strange results for so many things, I haven't yet learned to trust myself, or any of the settings yet. That's why I'm here, though. You guys have been extremely helpful already. I'm considering giving back eventually (when I know enough) by writing up very simple explanations for simple folk like me, who feel a bit overwhelmed in the beginning. I'm thinking now that a lot of my troubles, and strange occurrences in this particular area have been me incorrectly assuming that the conf settings are supposed to be in IPM (or forgetting that I read otherwise, as now it does sound familiar). I guess IPS just doesn't make sense to me, and as such I wouldn't presume it, because my mill has trouble moving just 1IPS. What's the use counting in floating points 1? :) The hissing noise is due to 'noise' believe it or not. Check your setup for ground loops and capacitive coupling and all that good stuff. Or maybe you should just buy some stepper drivers of higher quality. Step 1 for me now is to figure out what ground loops, and capacitive couplings are! I don't think I can afford any more stepper drivers. I have Sherline's only offering, and it was $600. Being a total newbie, and having decided I liked, and could afford their 5400 CNC package (completely non-profit, hobby use only), I've for simplicity, and guaranteed work-togetherness limited my purchases to their catalog. Still, $600 did seem very high, and it's missing things that I've since assumed come with other, possibly cheaper packages. For example, I have no option for a 5th axis, encoder inputs, servo anythings, a probe, actual e-stop button, spindle on/off, coolant on/off, that coffee maker attachment someone mentioned in here this week... How do people normally add things like contact stops, and probes? Are these part of better driver systems? I've also wondered if there was anything that could be done in-line. For example, the Sherline box would plug into another box, which would then plug into the serial port. That box could insert codes into the stream for the missing features above. This is probably an insane notion, and might quickly overflow any buffers it encounters along the way with too much data. If other drivers do all of this cool extra stuff, maybe I should just upgrade, and sell the Sherline box to someone who will undoubtedly then show up in here at some point, with all of my same problems, and I can instruct him to sell the box, and get something better. The circle of life continues. To keep the steppers cool, you can rig up some CPU fans to blow on them. But you really shouldn't leave the machine unattended. You can pause and resume if you need to leave in the middle of a job. If you must turn the drivers off, you can stop the program at a convenient place, and then edit the g-code file so that it starts there next time. (run-from-line is not quite ready yet.) I'm excited that a run-from-line is even in the works! It was one of the features I've already wished for, several times. I've taken to jotting down a sensible number from the scrolling lines, killing out, and then deleting everything before that line, and saving
Re: [Emc-users] EMC list troubles, and thanks, Gene Heskett!
You know, I'm not quite sure why I didn't simply decide to use Gmail from the start. I use it for my main address these days, and love having everything available wherever I go. I've already wanted several times to ask a question as it occurred to me at work, and couldn't, as I'd downloaded the messages into Thunderbird at home, and so had nothing to which I could reply. I tried at first to use the Gmail trick of appending some qualifier to the name. E.g. if I'm [EMAIL PROTECTED] (which I'm not), I would use something like [EMAIL PROTECTED], which would still make it to [EMAIL PROTECTED], but would have the +emc in it as something I could filter into a separate folder. The list wouldn't accept it, sending it back as having an invalid name. I suppose I could have simply filtered by 'From,' but I kind of just wanted something entirely emc-only. Unfortunately, I still don't really understand all the base thread stuff, and its related mumbo jumbo. I did get some info that's pushing me farther forward, however, and it sounds like even the pros in here still need to do a lot of experimenting to fine-tune everything, test limits, and back off from found limits. It sounds quite like machining in that respect. Thanks, Gene. -Gary On Tue, Mar 18, 2008 at 6:41 PM, Gene Heskett [EMAIL PROTECTED] wrote: On Tuesday 18 March 2008, Gary Fixler wrote: I set up an account for this list - [EMAIL PROTECTED] - through my host, but couldn't reply to the confirmation email from Thunderbird on Linux at home. It would send, and go into my outbox, but nothing would ever come of it. I had to click through to the site (from Thunderbird), and confirm it there. I then couldn't send, nor reply to any message ever from Thunderbird, though I tried several times to do both over the past few weeks, hoping it would finally take. It would, however, always let me send, and reply from the web interface. I'm not sure why, as it's the same account - just a different interface on my end, and a different outbound server (verizon at home / probably my host - hostrocket - at work). Thunderbird was receiving every list message, including the ones I'd sent through the web interface. Every message sent through the web version always made it, and promptly. Clearly, the Verizon server's version of my mail was just being dropped, probably by the list, as I've not had that problem sending mail anywhere else, and have for years now, including to about 5 other list serves. Anyway, I just thought I'd mention this, with details, in case anyone in here has power over these things. Maybe it's just a flipped switch, or someone's chair is on the internet cable ;) Also, a big thanks to Gene Heskett for answering my RTAPI error question from last night. I forgot about my mail troubles, and downloaded the messages into Thunderbird this morning, and of course, can't reply to that one now from in there. It would seem I can use this new Gmail address from now on, so I'm moving to this account, and dumping the cnc@ address from my host. I use Gmail daily anyway, so it's not a big deal, but it's frustrating that I can't use any personal email through my own server. I may have more questions about RTAPI issues, but I'll start a new thread with this address should it come to that. Thanks again. -Gary I have not had any probs with vz dropping this list, but the jerks kept dropping and bouncing the lkml, getting me un-subscribed twice so I had to move that account to gmail. But, when vz gets a corncob up their anus about a list, you may as well give up and use gmail. I actually have 3 servers I can 'pop3' fetch from, using fetchmail, which in turn uses procmail as its MTA, and procmail steers it through spamassassin and disposes of it accordingly if its too spammy. All kmail has to do is sort it to the right folders. Does that make this old fart (73) a 'power user'? Nah, just a wee bit better than the average bear, a small amount of the time, and dumber the rest of the time. :) In re the rtapi and unexpected realtime delay issues, I experimented some this afternoon with my base thread which was set at 78000ns when I started, reducing it to 38000ns for the last test, running most of the stuff in the nc_files dir to test, and never did see another error AFTER the startup, even when running at 200% speeds here. However, as has been noted, every motherbaord/video combo is going to be enough different that sometimes the only thing you can do is to throw more money at the hardware. There have been a couple of motherboards that just weren't usable but I don't even recall their trade names now. Perhaps one of the developers has a better memory than mine on what brands to avoid. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) A vivid and creative mind characterizes you.
Re: [Emc-users] How to set certain AXIS settings to defaults?
On Wed, 19 Mar 2008, Gary Fixler wrote: The ini file should be IPS, whereas EMC's sliders show IPM. That's why I was getting in the 1300s in EMC for my DEFAULT_VELOCITY = 22. That doesn't explain why it's 1312 in EMC (22 * 60 = 1320), but at least it's close, and I can set more realistic values now. Awesome. This granularity is probably from the fixed number of pixels in the slider widget. Also, are any values NOT in the default install? I seem to recall in my travels finding some variables that weren't anywhere in my config file. It makes me wonder what cool features I might be missing. Maybe there's a list I haven't found yet? http://linuxcnc.org/docs/html/config_ini_config.html The ini file is supposed to be described completely here^^, however sometimes people forget to write documentation. Did I just hear you volunteering? :) delete /usr/share/axis/images/axis.ngc or set the environment variable AXIS_OPEN_FILE to the ngc you want to open as default It doesn't seem to be respecting my environment variable here, even if I immediately run '$ emc' after setting it in the same shell. I haven't tried the file delete trick yet, but am glad to know where it resides now. Thanks. just tested this and it works: export AXIS_OPEN_FILE=/home/fenn/sandbox/cxf_splash.py emc I'm considering giving back eventually (when I know enough) by writing up very simple explanations for simple folk like me, who feel a bit overwhelmed in the beginning. When you're ready: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?BasicSteps I'm thinking now that a lot of my troubles, and strange occurrences in this particular area have been me incorrectly assuming that the conf settings are supposed to be in IPM (or forgetting that I read otherwise, as now it does sound familiar). I guess IPS just doesn't make sense to me, and as such I wouldn't presume it, because my mill has trouble moving just 1IPS. What's the use counting in floating points 1? :) I agree. The configuration file should allow you to specify in furlongs per fortnight if you so desire, but the .ini file format makes this impossible, or at least not worth the extra complexity. Step 1 for me now is to figure out what ground loops, and capacitive couplings are! I don't think I can afford any more stepper drivers. I have Sherline's only offering, and it was $600. Being a total newbie, and having decided I liked, and could afford their 5400 CNC package I'm not sure how you managed to acquire a sherline CNC for $600 as the base price is $2450 (which seems high to me). I would expect the factory setup to not hiss, catch fire, electrocute you, etc. You should call them and find out what the problem might be. How do people normally add things like contact stops, and probes? Are these part of better driver systems? I've also wondered if there was anything that could be done in-line. For example, the Sherline box would plug into another box, which would then plug into the serial port. That box could insert codes into the stream for the missing features above. This is probably an insane notion, and might quickly overflow any buffers it encounters along the way with too much data. This doesn't work, because rs-232 is not fast enough, and has unpredictable latencies, and needs special drivers for the device on the end of the cable. There are similar problems with most other networking technologies. This doesn't mean it's impossible, but it starts to diverge quickly from what EMC is really all about, a PC based machine control. (edit: i probably misunderstood you here. sherline uses a parport connector and simple logic signals, no codes or buffers or data) There are several interface cards you can add to the PCI bus, although for most people the parallel port connection they drive the steppers with has enough spare I/O for some switches and spindle control. You could tap into the parport line before it goes to the sherline driver card/box. interface cards: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?EMC2_Supported_Hardware If other drivers do all of this cool extra stuff, maybe I should just upgrade, and sell the Sherline box to someone who will undoubtedly then show up in here at some point, with all of my same problems, and I can instruct him to sell the box, and get something better. The circle of life continues. Some fancy motion control systems can cost up to 10 times (or more) what you paid for the whole system, and are overkill for this application. However, you can probably improve what you have if you learn a little bit. Maybe another sherline user can chime in here? I'm excited that a run-from-line is even in the works! It was one of the features I've already wished for, several times. I've taken to jotting down a sensible number from the scrolling lines, killing out, and then deleting everything before that line, and saving out as a new, partial file from which to complete things. I imagine
Re: [Emc-users] Emc-users Digest, Vol 23, Issue 51
Gary, If you can add another parallel port card ($10 on fleabay) you can have lots of extra inputs easy. There are two speeds that are settable for homing the search speed which you set as fast as your comfortable with and the final position speed that you set slower so you can get good repetable position. Unfortunaly the last speed is done at a rapid so if you have a weak heart and a very fast machine 400IPM it will jerk real bad and scare you... In slower machines it works well. Too bad none of the developers have real fast machines or we might get another option there... Basicly it moves the axis until it sees the switch change states then backs off then comes back again to touch off then rapids to your home position. If you have limit switches you can configure them to home as well. John On 20 Mar 2008 at 0:46, [EMAIL PROTECTED] wrote: A better method is to set up home switches, since this will calibrate the motor position in the case they were moved while the machine was off. I'd love to do this, but again, my box hasn't the inputs necessary. It does bring up some questions, though. How fast can you encounter a home switch? Do you home in this way at feed, or rapid speeds? Does it simply not matter, because it's always going to trip at the same moment when pressed, and thus will always home to the same, say, 0.001? How repeatably accurate are they? Thanks so much for all this great information, fenn! I'm starting to finally feel a bit more in control of my setup. -Gary - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Mesa 7i43 PWM Output mode
I’m new here and have question about PWM Up/down mode. From EMC docs and wiki, Pluto-P can be configured for both step/dir or up/down output mode. Can either MESA 5i20 or 7i43 output PWM up/down? Or could firmware be modified with Xilinx ISE for up/down? Searching thru CVS 2.3-pre source, I found: /src/hal/drivers/mesa7i43-firmware/hostmot2/hostmot2-register-map Bit 4,3 = PWM output mode select 00 = Normal Sign Magnitude PWMDIR outputs normal 01 = Normal Sign Magnitude PWMDIR outputs swapped (for locked antiphase) 10 = Up/down mode 11 = PDM mode (12 bits) Not sure if “10 = Up/down mode” really refers to output (or encoder)? I’d like to build a 130vdc 500 watt h-bridge for spindle and don’t think step/dir will work. I started working with EMC last month using Debian Sid, RTAI 3.6 and Fluxbox desktop. I stripped the kernel to bare minimum and used http://www.rtai.dk/cgi-bin/gratiswiki.pl?Latency_Killer to tweak an old Asus P2B motherboard. EMC2 installed fairly smooth, except for dealing with Matrox G400 DRI DMA calls/AXIS window moves causing latency spikes. I built a home alarm system three years ago with RTAI and Velleman K8000 IO board, the experience helped with EMC. The machines I’m working with are Sieg X2 mill with table mounted Micromark headstock for 4-axis and a Cummins mini-lathe for turning parts for the mill/lathe combo. Keil - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to set certain AXIS settings to defaults?
ben lipkowitz wrote: The hissing noise is due to 'noise' believe it or not. Check your setup for ground loops and capacitive coupling and all that good stuff. Or maybe you should just buy some stepper drivers of higher quality. I think Ben is being overly critical here. Xylotex drives do produce a hissing sound from the motor. It is a result of the type of PWM used by those drives, and it is normal and totally harmless. It does NOT indicate any kind of problem that you need to worry about. Regards, John Kasunich - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to set certain AXIS settings to defaults?
On Thursday 20 March 2008, Gary Fixler wrote: [TRAJ] DEFAULT_LINEAR_VELOCITY = DEFAULT_ANGULAR_VELOCITY = Interesting. I don't have DEFAULT_LINEAR_VELOCITY, but I do have DEFAULT_VELOCITY, which seems to be the same. Has the name changed, or does EMC accept either? I had been skipping over those ini values, because they're wildly different from what I see as the startup values in EMC. Now I see why. The ini file should be IPS, whereas EMC's sliders show IPM. That's why I was getting in the 1300s in EMC for my DEFAULT_VELOCITY = 22. That doesn't explain why it's 1312 in EMC (22 * 60 = 1320), but at least it's close, and I can set more realistic values now. Awesome. Also, are any values NOT in the default install? I seem to recall in my travels finding some variables that weren't anywhere in my config file. It makes me wonder what cool features I might be missing. Maybe there's a list I haven't found yet? delete /usr/share/axis/images/axis.ngc or set the environment variable AXIS_OPEN_FILE to the ngc you want to open as default It doesn't seem to be respecting my environment variable here, even if I immediately run '$ emc' after setting it in the same shell. I haven't tried the file delete trick yet, but am glad to know where it resides now. Thanks. Sadly, the EMC2 AXIS default file is also set to run at a higher speed than my sad little machine can handle This isn't a problem with EMC2. Your machine's MAX_VELOCITY is configured wrong. The machine should not be able to lose steps simply by being commanded too fast. Why would you want to command the machine to move faster than is physically possible? I wouldn't! I just haven't managed to understand all of the settings yet. I've read a lot, and have toyed with things like MAX_VELOCITY (which is at 30 currently - no wonder it seems limitless! That's 1800 IPM!), but I've gotten such strange results for so many things, I haven't yet learned to trust myself, or any of the settings yet. That's why I'm here, though. You guys have been extremely helpful already. I'm considering giving back eventually (when I know enough) by writing up very simple explanations for simple folk like me, who feel a bit overwhelmed in the beginning. I'm thinking now that a lot of my troubles, and strange occurrences in this particular area have been me incorrectly assuming that the conf settings are supposed to be in IPM (or forgetting that I read otherwise, as now it does sound familiar). I guess IPS just doesn't make sense to me, and as such I wouldn't presume it, because my mill has trouble moving just 1IPS. What's the use counting in floating points 1? :) The hissing noise is due to 'noise' believe it or not. Check your setup for ground loops and capacitive coupling and all that good stuff. Or maybe you should just buy some stepper drivers of higher quality. Step 1 for me now is to figure out what ground loops, and capacitive couplings are! I don't think I can afford any more stepper drivers. I have Sherline's only offering, and it was $600. Being a total newbie, and having decided I liked, and could afford their 5400 CNC package (completely non-profit, hobby use only), I've for simplicity, and guaranteed work-togetherness limited my purchases to their catalog. Still, $600 did seem very high, and it's missing things that I've since assumed come with other, possibly cheaper packages. For example, I have no option for a 5th axis, encoder inputs, servo anythings, a probe, actual e-stop button, spindle on/off, coolant on/off, that coffee maker attachment someone mentioned in here this week... How do people normally add things like contact stops, and probes? Are these part of better driver systems? I've also wondered if there was anything that could be done in-line. For example, the Sherline box would plug into another box, which would then plug into the serial port. That box could insert codes into the stream for the missing features above. This is probably an insane notion, and might quickly overflow any buffers it encounters along the way with too much data. If other drivers do all of this cool extra stuff, maybe I should just upgrade, and sell the Sherline box to someone who will undoubtedly then show up in here at some point, with all of my same problems, and I can instruct him to sell the box, and get something better. The circle of life continues. To keep the steppers cool, you can rig up some CPU fans to blow on them. But you really shouldn't leave the machine unattended. You can pause and resume if you need to leave in the middle of a job. If you must turn the drivers off, you can stop the program at a convenient place, and then edit the g-code file so that it starts there next time. (run-from-line is not quite ready yet.) I'm excited that a run-from-line is even in the works! It was one of the features I've already wished for, several times. I've taken to jotting down a sensible number from the scrolling lines, killing out, and then deleting
Re: [Emc-users] Mesa 7i43 PWM Output mode
list wrote: I’m new here and have question about PWM Up/down mode. From EMC docs and wiki, Pluto-P can be configured for both step/dir or up/down output mode. Can either MESA 5i20 or 7i43 output PWM up/down? The 7i43 with the HostMot2 firmware can do PWM in up/down mode, but the driver doesnt support it yet. I've been meaning to add that, I'll try to get it done in the next day or so. I'm not sure what the present capabilities of the 5i20 firmware driver are, but I would think they support up/down PWM. Over the next few months or so I'm going to write a new driver for the 5i2x cards (and the 4i6x cards) for the HostMot2 firmware, and then they'll definately support it. -- Sebastian Kuzminsky Yes, we have a soul. But it is mechanical. -- Daniel Dennet - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
I was actually planing on using a circuit like this http://www.electronicsam.com/images/KandT/servostart/logic.JPG (just an abstract idea - could be done with fewer ic's (nand)) when I get to that point. (unless the driver was changed before then) sam - Original Message - From: Sebastian Kuzminsky [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Thursday, March 20, 2008 09:12 AM Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode list wrote: I’m new here and have question about PWM Up/down mode. From EMC docs and wiki, Pluto-P can be configured for both step/dir or up/down output mode. Can either MESA 5i20 or 7i43 output PWM up/down? The 7i43 with the HostMot2 firmware can do PWM in up/down mode, but the driver doesnt support it yet. I've been meaning to add that, I'll try to get it done in the next day or so. I'm not sure what the present capabilities of the 5i20 firmware driver are, but I would think they support up/down PWM. Over the next few months or so I'm going to write a new driver for the 5i2x cards (and the 4i6x cards) for the HostMot2 firmware, and then they'll definately support it. -- Sebastian Kuzminsky Yes, we have a soul. But it is mechanical. -- Daniel Dennet - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
On Thu, 20 Mar 2008, sam sokolik wrote: Date: Thu, 20 Mar 2008 09:21:56 -0500 From: sam sokolik [EMAIL PROTECTED] Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode I was actually planing on using a circuit like this http://www.electronicsam.com/images/KandT/servostart/logic.JPG (just an abstract idea - could be done with fewer ic's (nand)) when I get to that point. (unless the driver was changed before then) sam The current 5I20 firmware supported by EMC2 (HOSTMOT) does not support UP/DOWN PWM mode. If you patch the current firmware with the gates (ad directly drive an HBridge) the will be some problems with glitches when the PWM is updated by EMC, as the DIR output can be updated asynchronously relative to the PWM output. This is fixed in HOSTMOT2, both because UP/DOWN PWM mode is supported in the hardware, and because HOSTMOT2 has a double buffered PWM mode that only changes the outputs synchronously with the PWM cycle. - Original Message - From: Sebastian Kuzminsky [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Thursday, March 20, 2008 09:12 AM Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode list wrote: I’m new here and have question about PWM Up/down mode. From EMC docs and wiki, Pluto-P can be configured for both step/dir or up/down output mode. Can either MESA 5i20 or 7i43 output PWM up/down? The 7i43 with the HostMot2 firmware can do PWM in up/down mode, but the driver doesnt support it yet. I've been meaning to add that, I'll try to get it done in the next day or so. I'm not sure what the present capabilities of the 5i20 firmware driver are, but I would think they support up/down PWM. Over the next few months or so I'm going to write a new driver for the 5i2x cards (and the 4i6x cards) for the HostMot2 firmware, and then they'll definately support it. -- Sebastian Kuzminsky Yes, we have a soul. But it is mechanical. -- Daniel Dennet - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
On Thursday 20 March 2008, sam sokolik wrote: I was actually planing on using a circuit like this http://www.electronicsam.com/images/KandT/servostart/logic.JPG (just an abstract idea - could be done with fewer ic's (nand)) when I get to that point. (unless the driver was changed before then) sam I think, from what I read recently in the hal handbook, that pwmgen running in type=2 mode already does that. Not tested of course. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Acceptance testing: An unsuccessful attempt to find bugs. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
Yes - this was strictly for the mesa card (I have both the pluto and mesa card). Both pwmgen and the pluto have the option for up/down pwm. sam - Original Message - From: Gene Heskett [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Thursday, March 20, 2008 09:39 AM Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode On Thursday 20 March 2008, sam sokolik wrote: I was actually planing on using a circuit like this http://www.electronicsam.com/images/KandT/servostart/logic.JPG (just an abstract idea - could be done with fewer ic's (nand)) when I get to that point. (unless the driver was changed before then) sam I think, from what I read recently in the hal handbook, that pwmgen running in type=2 mode already does that. Not tested of course. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Acceptance testing: An unsuccessful attempt to find bugs. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Multiple motors
Hi All I was wondering if anyone had experience with driving a single ballscrew with two similar DC motors, one at either end? So we have; - one ballscrew - one rotary encoder - one servo drive - two DC servo motors, one at either end of the shaft One will obviously turn 'backwards' relative to the other, not that that should have any bearing on anything. I'm trying to figure out if there would be a detriment to connecting the motors in parallel to one servo drive. Availabe power is not a problem, but possible current-interplay between the motors is. Perhaps they should be in series, but peak current would be halved One motor would always draw a bit more power, but the servo drive will see a single load. Anyone come across such a system in the real world? Regards Roland - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
On Thursday 20 March 2008, sam sokolik wrote: Yes - this was strictly for the mesa card (I have both the pluto and mesa card). Both pwmgen and the pluto have the option for up/down pwm. sam And thats what I get for not going back and re-reading the earlier parts of the thread, sorry Sam. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) kira Ada, the only language written to milspec. Mikster shudder - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Multiple motors
Roland Jollivet wrote: Hi All I was wondering if anyone had experience with driving a single ballscrew with two similar DC motors, one at either end? So we have; - one ballscrew - one rotary encoder - one servo drive - two DC servo motors, one at either end of the shaft One will obviously turn 'backwards' relative to the other, not that that should have any bearing on anything. I'm trying to figure out if there would be a detriment to connecting the motors in parallel to one servo drive. Availabe power is not a problem, but possible current-interplay between the motors is. Perhaps they should be in series, but peak current would be halved One motor would always draw a bit more power, but the servo drive will see a single load. Anyone come across such a system in the real world? Regards Roland I haven't actually done this, but I know a bit about motors and how they behave. (I've been doing motor control and motor drives as my day job for almost 20 years.) If you can run the motors in series, you will get pretty good results. Putting the motors in series ensures that they both have the same current, and thus approximately the same torque. Having them on the same shaft ensures that they spin at the same speed, and thus have approximately the same voltage. As a result, both current/torque and voltage/speed will be well matched between the motors - each will be supplying approximately 50% of the load. The only downside of the series arrangement is that for any particular speed you will need twice as much voltage from the drive. If you want to run the motors near the top of their speed range, you will run out of voltage. (You could use two 90V motors in series on a 180V drive, or something similar.) Hooking the motors in parallel is a riskier proposition. Speed and voltage are directly related in a DC motor, by the motor constant Kv. (Usually measured in volts per RPM or similar.) The common shaft will force both motors to turn at exactly the same speed. The parallel wiring will force them to have exactly the same voltage. If the motors don't have exactly the same Kv, something has to give. For a minor Kv mismatch, the result will be mismatched currents, with one motor running hotter. If the Kv mismatch is more severe, you might actually have one motor supplying negative torque, increasing the load on the other one instead of helping it. Regards, John Kasunich - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
Thanks for the info. Just wanted to make sure PWM (or PDM) up/down was possible with Mesa boards. For the money, I knew the 7i43 was a good deal with 8 encoders/8 PWM outputs plus additional unused FPGA space compared with Pluto's 4/4. Sebastian and Peter, thanks for Mesa hal drivers. Know I've got to figure out how deal with 50 pin IDC connectors, nice for clean Mesa board to board connections, but what a pain for homebuilt parts scrounging. I've got a butt load of old SCSI cables, cards and misc junk, so hopefully that will help with building stuff. I can't see spending $70+ for 50 pin screw connectors. Sam I'm planning to build something similar to your h-bridge at http://www.cnczone.com/forums/showthread.php?t=25929. BTW, the Milwaukee Matic in your shop is a monster, nice! Keil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gene Heskett Sent: Thursday, March 20, 2008 8:13 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode On Thursday 20 March 2008, sam sokolik wrote: Yes - this was strictly for the mesa card (I have both the pluto and mesa card). Both pwmgen and the pluto have the option for up/down pwm. sam And thats what I get for not going back and re-reading the earlier parts of the thread, sorry Sam. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) kira Ada, the only language written to milspec. Mikster shudder - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mesa 7i43 PWM Output mode
On Mar 20, 2008, at 1:16 PM, list wrote: Thanks for the info. Just wanted to make sure PWM (or PDM) up/down was possible with Mesa boards. For the money, I knew the 7i43 was a good deal with 8 encoders/8 PWM outputs plus additional unused FPGA space compared with Pluto's 4/4. Sebastian and Peter, thanks for Mesa hal drivers. Know I've got to figure out how deal with 50 pin IDC connectors, nice for clean Mesa board to board connections, but what a pain for homebuilt parts scrounging. I've got a butt load of old SCSI cables, cards and misc junk, so hopefully that will help with building stuff. I can't see spending $70+ for 50 pin screw connectors. http://www.daqstuff.com/50_pin_daq.htm half that price ... and worth it to avoid all the trouble of making a couple of custom boards. Now if you can make your own boards then this might not look so attractive unless you have other things to do with your time. ;-) HTH Dave Sam I'm planning to build something similar to your h-bridge at http://www.cnczone.com/forums/showthread.php?t=25929. BTW, the Milwaukee Matic in your shop is a monster, nice! Keil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gene Heskett Sent: Thursday, March 20, 2008 8:13 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Mesa 7i43 PWM Output mode On Thursday 20 March 2008, sam sokolik wrote: Yes - this was strictly for the mesa card (I have both the pluto and mesa card). Both pwmgen and the pluto have the option for up/down pwm. sam And thats what I get for not going back and re-reading the earlier parts of the thread, sorry Sam. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) kira Ada, the only language written to milspec. Mikster shudder -- -- - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to set certain AXIS settings to defaults?
The ini file should be IPS, whereas EMC's sliders show IPM. That's why I was getting in the 1300s in EMC for my DEFAULT_VELOCITY = 22. That doesn't explain why it's 1312 in EMC (22 * 60 = 1320), but at least it's close, and I can set more realistic values now. Awesome. This granularity is probably from the fixed number of pixels in the slider widget. Interesting! I've done quite a bit of UI stuff in scripting environments for work, and play, and they usually allow explicitly setting a value. Once you touch the slider, you mess it up, of course, and trap yourself in the discrete steps of the slider, but often the slider will include an editable int field for being more explicit than the slider itself. It probably doesn't matter, however. I'm never going to notice the difference between a few IPM. http://linuxcnc.org/docs/html/config_ini_config.html The ini file is supposed to be described completely here^^, however sometimes people forget to write documentation. Did I just hear you volunteering? :) Oh no! What have I done!? :) Yeah, I'll help out where I can, when, and as I can. just tested this and it works: export AXIS_OPEN_FILE=/home/fenn/sandbox/cxf_splash.py emc I'll give it a shot, but meanwhile, I can open Python scripts in EMC? I'm considering giving back eventually (when I know enough) by writing up very simple explanations for simple folk like me, who feel a bit overwhelmed in the beginning. When you're ready: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?BasicSteps Cool, thanks! I agree. The configuration file should allow you to specify in furlongs per fortnight if you so desire, but the .ini file format makes this impossible, or at least not worth the extra complexity. Ha! You've put things in perspective for me. I'll get over myself, and just remember from now on that it's IPS in the .ini file. I'm not sure how you managed to acquire a sherline CNC for $600 as the base price is $2450 (which seems high to me). I would expect the factory setup to not hiss, catch fire, electrocute you, etc. You should call them and find out what the problem might be. Oh no, the cnc-ready mill was indeed a few thousand. It didn't come with a control box, though, and their offering was $600: http://www.sherline.com/8760pg.htm How do people normally add things like contact stops, and probes? Are these part of better driver systems? I've also wondered if there was anything that could be done in-line. For example, the Sherline box would plug into another box, which would then plug into the serial port. That box could insert codes into the stream for the missing features above. This is probably an insane notion, and might quickly overflow any buffers it encounters along the way with too much data. This doesn't work, because rs-232 is not fast enough, and has unpredictable latencies, and needs special drivers for the device on the end of the cable. There are similar problems with most other networking technologies. This doesn't mean it's impossible, but it starts to diverge quickly from what EMC is really all about, a PC based machine control. (edit: i probably misunderstood you here. sherline uses a parport connector and simple logic signals, no codes or buffers or data) You know, it's been so long since I've been behind the machine, I totally forgot it's parallel. I've been working with microcontrollers, too, and am using serial with them, and got my wires crossed. Now it comes back to me. I had to special order a part for my Shuttle XPC to give me back the missing parallel port. There are several interface cards you can add to the PCI bus, although for most people the parallel port connection they drive the steppers with has enough spare I/O for some switches and spindle control. You could tap into the parport line before it goes to the sherline driver card/box. interface cards: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?EMC2_Supported_Hardware Thanks for the link. Now that I'm reminded it's a parport interface, I'm a bit excited. I suppose it all just comes down to telling the system (via HAL) which pins should be connected to what. The shrouds of mystery are being peeled away, slowly. Also, thanks for the link. Some fancy motion control systems can cost up to 10 times (or more) what you paid for the whole system, and are overkill for this application. However, you can probably improve what you have if you learn a little bit. Maybe another sherline user can chime in here? True, I can't spend loads of money, as this isn't a financial investment. It's all for fun. Also, I have at least a dozen other hobbies, the current most expensive involving building up my woodshop out in the garage. I think I stand a pretty good chance of proving to the world that money can indeed buy great happiness, if I only I could find someone with deep pockets willing to take me up on this wager. run-from-line has been around for a long time, but
Re: [Emc-users] How to set certain AXIS settings to defaults?
I think Ben is being overly critical here. Xylotex drives do produce a hissing sound from the motor. It is a result of the type of PWM used by those drives, and it is normal and totally harmless. It does NOT indicate any kind of problem that you need to worry about. Thanks, John. I suspected as much. They did that the first day I hooked them up, and I've made my own beginner-level stepper drives for hobby projects with things like BASIC Stamps, and PIC microcontrollers, and they've made hissing, and squealing noises, too, albeit more quietly, with less power to their coils. I have some EL wire drivers, too, which are basically voltage multipliers, and they squeal like they're about to explode! -Gary - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to set certain AXIS settings to defaults?
It's also just occurred to me that I could leave the PC, and driver box on, and just unplug the motors until I'm ready to go again. I'm not sure how bad that would be for the system. My thoughts turned toward things like back-EMF. And that will u$ually break the mirror and let the $moke out of the driver$. The motors must be connected with dependable, solid, no intermittents allowed cabling as long as the drivers are powered up. Alright, that's two people spreading caution. Thanks for the warnings! Point taken - I definitely don't want to burn out a $600 box. I have left it running, turned out the lights and gone to bed, not coming back till noonish the next day on a couple of projects and have gotten away with it. I've done it once so far, with a really complicated (for me, as a newb) setup that I didn't want to have to redo. In the morning, however, I couldn't take it anymore, and shut it all down before heading off to work. I was right, too - it was nearly impossible to get it back to the right location later. I had essentially nothing off of which to key. The box is a long cube, long enough to hold a 4 axis board, 3.5 square, with a 12 volt ex psu fan in each end, one blowing in, the other out, and they are running on about 18 volts. Not all of those fans will take that sort of abuse, but its been my experience here that if it lasts an hour, it will last for years, one of them is probably 10 years old now! They are noisy at that speed though. And zero chance of my drivers overheating which is the real criteria. :) Wow, I didn't realize they were so rugged. I'll definitely keep them in mind now, for all manner of projects. Are you thinking emc uses a serial port? Not normally since there is little that is real-time about serial. Most use a parport interface. I was indeed thinking that, having forgotten (blocked out?) all of the annoyance of tracking down the parport 'upgrade' for my Shuttle XPC, and waiting for it to arrive. I used to turn my nose up at parports, as they were so large, and 'old-fashioned,' but having multiple, simultaneous I/O lines, and dead-simple communications I admit has enough appeal to draw me back in. I've wired up cables, and even ran a custom serial port to my electronics bench from my PC across the room, so I could program microcontrollers in places without constantly bringing the setup back over to the PC, so I'm thinking I should just rig up an inline box that provides me with headers for all these helpful extras I'm missing. Even though it's completely unnecessary fluff for me, I'd love to see the spindle stop itself when it's done making the part for once. I'd have to break into the mill's power box for that, but that's easy enough (he said, confidently). emc does have the inputs. If your box doesn't have them available due to a lack of breakouts, thats fixable. All 17 usable pins on a parport are either used by xylotex, or are present as passive terminals on the edge of the xylotex board, take 'em wherever. I'm running 4 axis's the spindle ATM, and still have about 5 pins I could use for other things leftover, but I don't have home/limit switches setup yet either. I've been convinced for probably a year now (while busy with other things, and procrastinating on getting my machine bench set up finally) that I had no easy option for getting more inputs to emc, so this is exciting news, indeed. I'm pretty eager to figure out a homing solution, too, though it's much lower priority than ATM about 20 other projects. There's never nearly enough time in a day, or a weekend. Thanks, Gene! -Gary - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to set certain AXIS settings to defaults?
On Thursday 20 March 2008, Gary Fixler wrote: It's also just occurred to me that I could leave the PC, and driver box on, and just unplug the motors until I'm ready to go again. I'm not sure how bad that would be for the system. My thoughts turned toward things like back-EMF. [...] And that will u$ually break the mirror and let the $moke out of the driver$. The motors must be connected with dependable, solid, no intermittents allowed cabling as long as the drivers are powered up. Alright, that's two people spreading caution. Thanks for the warnings! Point taken - I definitely don't want to burn out a $600 box. I have left it running, turned out the lights and gone to bed, not coming back till noonish the next day on a couple of projects and have gotten away with it. I've done it once so far, with a really complicated (for me, as a newb) setup that I didn't want to have to redo. In the morning, however, I couldn't take it anymore, and shut it all down before heading off to work. I was right, too - it was nearly impossible to get it back to the right location later. I had essentially nothing off of which to key. One of the reasons I often drill a useless hole someplace at the start of the project, and write my code with that as the 0,0,0 point. That makes getting back to within a couple thou a bit easier. The box is a long cube, long enough to hold a 4 axis board, 3.5 square, with a 12 volt ex psu fan in each end, one blowing in, the other out, and they are running on about 18 volts. Not all of those fans will take that sort of abuse, but its been my experience here that if it lasts an hour, it will last for years, one of them is probably 10 years old now! They are noisy at that speed though. And zero chance of my drivers overheating which is the real criteria. :) Wow, I didn't realize they were so rugged. I'll definitely keep them in mind now, for all manner of projects. Definitley test the ones you are going to use, if its not up to that sort of music, there's always that 45 gallon roughneck cannister just outside the door to store it in till the truck comes by. I'd run these on a bit less, but that is what happened to be available. Are you thinking emc uses a serial port? Not normally since there is little that is real-time about serial. Most use a parport interface. I was indeed thinking that, having forgotten (blocked out?) all of the annoyance of tracking down the parport 'upgrade' for my Shuttle XPC, and waiting for it to arrive. I used to turn my nose up at parports, as they were so large, and 'old-fashioned,' but having multiple, simultaneous I/O lines, and dead-simple communications I admit has enough appeal to draw me back in. I've wired up cables, and even ran a custom serial port to my electronics bench from my PC across the room, so I could program microcontrollers in places without constantly bringing the setup back over to the PC, so I'm thinking I should just rig up an inline box that provides me with headers for all these helpful extras I'm missing. Even though it's completely unnecessary fluff for me, I'd love to see the spindle stop itself when it's done making the part for once. I'd have to break into the mill's power box for that, but that's easy enough (he said, confidently). emc does have the inputs. If your box doesn't have them available due to a lack of breakouts, thats fixable. All 17 usable pins on a parport are either used by xylotex, or are present as passive terminals on the edge of the xylotex board, take 'em wherever. I'm running 4 axis's the spindle ATM, and still have about 5 pins I could use for other things leftover, but I don't have home/limit switches setup yet either. I've been convinced for probably a year now (while busy with other things, and procrastinating on getting my machine bench set up finally) that I had no easy option for getting more inputs to emc, so this is exciting news, indeed. I'm pretty eager to figure out a homing solution, too, though it's much lower priority than ATM about 20 other projects. Watch your store bought cabling for the parport, make sure the cable you use actually has all 25 wires in it. There's never nearly enough time in a day, or a weekend. Chuckle, heck, I'd be happy to have enough time to get what I want to do done before I fall over. I suspect my plans will outlast me, diabetis beginning to slow me down, darnit. I hate unfinished business. :) Thanks, Gene! -Gary -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) I gained nothing at all from Supreme Enlightenment, and for that very reason it is called Supreme Enlightenment. -- Gotama Buddha - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008.
[Emc-users] newb question: multiple cnc program over multiple *.ngc files
Hello, In the Language Overview section of the manual: http://www.linuxcnc.org/docs/2.2/html/gcode_main.html#cha:Language-Overview I'm seeing this line: A single program may be in a single file, or a program may be spread across several files.. However the only way I can see to make use of g-code over multiple files is by using m100-m199 (user defined commands): http://www.linuxcnc.org/docs/2.2/html/gcode_main.html#sec:M100-to-M199: Is this the only way to spread g-code over multiple files (and use them)? Thanks. Robert W. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
