Re: [Emc-users] slow down spans
On Sat, Mar 31, 2007 at 08:11:49PM -0500, Stuart Stevenson wrote: > Gentlemen, > After getting the homing to work I have another request. > I would like to see slow down spans at the end of the table > travels. This would be a user configurable distance to slow down the > axis travel when it approaches the soft limit of the axis travel. Both > rapid and feed motion would slow down in this area to make sure there > would be no overrun past the soft limit. It would allow full > interpolation and motion in this area. > thanks > Stuart Surely it can be no more acceptable to overshoot desired positions in the center of travel than near the ends. This maximum overshoot (following error) comes down to tuning, and on a properly tuned machine is smaller than the desired machining tolerance. EMC will not overshoot a soft limit any more than it will overshoot any other programmed path, so slowing down to "make sure" is just not necessary. As you tune the machine to cut parts accurately, you are also tuning it to stay within soft limits just as accurately. Chris - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC Supported Boards and more
>> Can't quite see the logic in not supporting "smart" cards though I don't see a need to move to a smart card, unless you are working with a not-so-smart OS, like Windows. >> Mach's going that way slowly... No - Mach jumped in bed with Gecko. When I asked about whether there was an API for other hardware manufacturers to build devices like the G100, I was moderated off the list. That's my point of view, FWIW. >Len - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] slow down spans
The interpreter will not allow a command that is beyond the soft limit. The trajectory planner assures that there is (essentially) no overshoot of a commanded position. Therefore, there is no need to have a slow zone. If, on the other hand, the software is not trustworthy, hardware limit switches will solve the problem. Unfortunately, they must be located such that at maximum velocity the machine will be able to stop prior to damaging itself. Of course, there are plenty of other ways for the machine to crash. Not all are preventable by hardware. Some are difficult for software to handle. For example, the software does not model the vise and fixtures. Ken [EMAIL PROTECTED] Mark Kenny Products Company, LLC 55 Main Street Voice: (203)426-7166 Newtown, CT 06470Fax: (203)426-9138 http://www.MarkKenny.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Stuart Stevenson Sent: Saturday, March 31, 2007 8:12 PM To: Emc-users@lists.sourceforge.net Subject: [Emc-users] slow down spans Gentlemen, After getting the homing to work I have another request. I would like to see slow down spans at the end of the table travels. This would be a user configurable distance to slow down the axis travel when it approaches the soft limit of the axis travel. Both rapid and feed motion would slow down in this area to make sure there would be no overrun past the soft limit. It would allow full interpolation and motion in this area. thanks Stuart - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] slow down spans
Stuart Stevenson wrote: > Gentlemen, > After getting the homing to work I have another request. > I would like to see slow down spans at the end of the table > travels. This would be a user configurable distance to slow down the > axis travel when it approaches the soft limit of the axis travel. Both > rapid and feed motion would slow down in this area to make sure there > would be no overrun past the soft limit. It would allow full > interpolation and motion in this area. > thanks Have you tried rapiding up to a soft limit? If you do I think you'll find that the machine stops without overrunning the limits. EMC's soft limits don't wait until you hit the limit and then start slowing down. Soft limits work by not allowing the TARGET position of the move to be set beyond the limit. If you tell the machine "rapid to North Dakota", the control chops that off and says "rapid to AND STOP AT the soft limit". Regards, John Kasunich - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] slow down spans
Gentlemen, After getting the homing to work I have another request. I would like to see slow down spans at the end of the table travels. This would be a user configurable distance to slow down the axis travel when it approaches the soft limit of the axis travel. Both rapid and feed motion would slow down in this area to make sure there would be no overrun past the soft limit. It would allow full interpolation and motion in this area. thanks Stuart - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2.1.4 AXIS jog problem
Andy Ibbotson wrote: > Chris, > Sorry for not RTFM! Can I ask why the problem occurred in 2.1.4 It occured as an unintended result of fixing another bug. The annoying part is that the bug that was fixed was less significant than the bug that was introduced. Sometimes you just can't win. Regards, John Kasunich - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2.1.4 AXIS jog problem
Chris, Sorry for not RTFM! Can I ask why the problem occurred in 2.1.4 and when will 2.1.5 be released? Regards Andy -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Radek Sent: 31 March 2007 21:42 To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] 2.1.4 AXIS jog problem On Sat, Mar 31, 2007 at 09:39:43PM +0100, Andy Ibbotson wrote: > Hi, > I've just installed 2.1.4 and have now got a problem with incremental > jogs using AXIS. Continuous mode works fine for all axes. > Has anyone else had this problem? > Regards > Andy Yes: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Released It will be fixed in EMC 2.1.5. Meanwhile, best bet is to use the keyboard arrows instead. Chris - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDE V ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2.1.4 AXIS jog problem
On Sat, Mar 31, 2007 at 09:39:43PM +0100, Andy Ibbotson wrote: > Hi, > I've just installed 2.1.4 and have now got a problem with incremental > jogs using AXIS. Continuous mode works fine for all axes. > Has anyone else had this problem? > Regards > Andy Yes: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Released It will be fixed in EMC 2.1.5. Meanwhile, best bet is to use the keyboard arrows instead. Chris - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2.1.4 AXIS jog problem
Hi, I've just installed 2.1.4 and have now got a problem with incremental jogs using AXIS. Continuous mode works fine for all axes. If I select an incremental jog value from the drop down list (INCREMENTS = 0.001 0.01 0.05 1/8 etc. defined in ini file) the axis will jog once then won't respond to either - or + buttons. If I select an alternate axis then the newly selected axis will jog once then set the axis selection to the previously selected axis which with another click on the + or - button will jog once, for example: Select jog 0.01 Select X axis Select + (axis jogs) Select + (axis does not jog) Select Y axis Select + (axis jogs then selects X axis) Select + (X axis jogs then selects Y axis) Etc. V2.1.3 worked fine. Has anyone else had this problem? Regards Andy -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wayne Weedon Sent: 31 March 2007 18:08 To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] EMC Supported Boards and more [EMAIL PROTECTED] wrote: > My advice on how to proceed. First study a bit about EMC2 by downloading and building a PC with the Live CDROM. Start up emc2 and look around a bit at the Hardware Abstraction Layer. That install also gives you a couple of manuals that you can have a look at for further info. Second is to get yourself hooked into the comm networks, lists and ircs. Third remember that "we" are a collection of unpaid folk who are working here for mutual benefit. If all what you want to do is make chips using EMC2, you might consider hiring a consultant. If you choose the consultant path, a note here to that effect should get several interested folk. Well I do intend to install the live cd on another machine and give it a go. Although I use my machines to make my living (1 man band), the retrofitting is "the" hobby, been doing it since my 1st retrofit of my other Hardinge lathe back in the late 90's that was with ahha software. Since then I've played with and used Mach which I find pretty good, but it's always good to try something different! Consultants! Hmm that would take the fun out of it, and I'd probably lose interest and go out and buy a machine with a fanuc on it! I've had machines with Fanuc, Mitsubishi and Siemens controls, funny how they were all ripped out, when I could of just spent the money to get them going again! Again no fun in it. I like the fact I can repair my own machines. I can see there will be a benefit in performance by using "real" analogue drives over step/dir drives. Is my assumption correct? Can't quite see the logic in not supporting "smart" cards though, Mach's going that way slowly, and only time will tell how good the implementation is.The Industry in general have moved in that direction. But I see a lot of support for common buses (e.g CANbus) in the industry too. Wayne -- --- Wayne M Weedon Email: [EMAIL PROTECTED] Fdos Design Poole UK Tel +44-1202-677025Fax +44-1202-770515 Mobile: 07774 439915 Specialists in small batch & Production Mechanical/Electrical Engineering --- - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDE V ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC Supported Boards and more
[EMAIL PROTECTED] wrote: > My advice on how to proceed. First study a bit about EMC2 by downloading and > building a PC with the Live CDROM. Start up emc2 and look around a bit at > the Hardware Abstraction Layer. That install also gives you a couple of > manuals that you can have a look at for further info. Second is to get > yourself hooked into the comm networks, lists and ircs. Third remember that > "we" are a collection of unpaid folk who are working here for mutual benefit. > If all what you want to do is make chips using EMC2, you might consider > hiring a consultant. If you choose the consultant path, a note here to that > effect should get several interested folk. Well I do intend to install the live cd on another machine and give it a go. Although I use my machines to make my living (1 man band), the retrofitting is "the" hobby, been doing it since my 1st retrofit of my other Hardinge lathe back in the late 90's that was with ahha software. Since then I've played with and used Mach which I find pretty good, but it's always good to try something different! Consultants! Hmm that would take the fun out of it, and I'd probably lose interest and go out and buy a machine with a fanuc on it! I've had machines with Fanuc, Mitsubishi and Siemens controls, funny how they were all ripped out, when I could of just spent the money to get them going again! Again no fun in it. I like the fact I can repair my own machines. I can see there will be a benefit in performance by using "real" analogue drives over step/dir drives. Is my assumption correct? Can't quite see the logic in not supporting "smart" cards though, Mach's going that way slowly, and only time will tell how good the implementation is.The Industry in general have moved in that direction. But I see a lot of support for common buses (e.g CANbus) in the industry too. Wayne -- --- Wayne M Weedon Email: [EMAIL PROTECTED] Fdos Design Poole UK Tel +44-1202-677025Fax +44-1202-770515 Mobile: 07774 439915 Specialists in small batch & Production Mechanical/Electrical Engineering --- - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC Supported Boards and more
Hi Wayne On Sat, 31 Mar 2007 15:24:54 +0100, "Enhanced Machine Controller (EMC)" said: >Hi all. > >Been looking a little into EMC2 and in the next week will be able to >compare it to the software I currently use on the VMC (mach). > >I do really want to get away from Parallel ports and maybe even step/dir >drives. I try not to use steppers under any circumstances. > >My biggest major project is my Hardinge HXL-S CNC lathe which has been a >long battle to get as far as I have got with limited time available. I >also have two gang tooled lathes in the queue. > >Anyways, had a quick look at the boards supported by EMC2 and it does >seem that they are all passive devices ie not motion controllers per se >as say a DeltaTau or Galil card would be. But rather convenient i/o cards. We tend to think in terms of "dumb" io as opposed to "smart" cards. Dumb io passes signals directly through to the PC where smart io tends to process stuff on the card. The Galil or DeltaTau boards are "smart" to our way of thinking because they take a high level set of signals and produce motion from them. >Do they offer performance advantages over the parallel port other than >the additional i/o available? If by the term "they" you are referring to dumb cards, they offer the advantage of many more signals than you can get from a single parport. There is no speed advantage of say a mesa or vital or ... over a parport because the speed can be handled by emc's thread timing. >Is it likely that EMC2 will support so called intelligent motion >controllers? I don't know any reason we would want to. We use the PC to handle motion planning and such that the intelligent boards do. If we were to build an EMC for galil for example it would be little more than an interpreter and some sort of task/canon reader that translated it's input into the galil language. >Any intention to support external PLC's over modbus? Again our thinking has been, "why spend the money for an external processor when the PC can also handle these tasks. That's why we have a logic processor working in the emc environment itself. >What would the experienced emc2 guys here suggest as far as the type I >should use for the lathe above as an example? > >Currently it has new servo motors (brushed) and drives (step/dir input) >but the machine also needs a load more i/o for the other systems on the >machine. It has a 1024 lpr encoder on the spindle which I would like to > exploit rather than just an index signal. We chose Pico stuff for the last lathe I worked on. It was simply a matter of price for the combination of real servo drives, real feedback to the PC and just a bit of "smarts" on the Pico interface cards. It should easily handle the setup you have described here. Oh and did I mention that it produces a fully closed loop servo system! >I know how I would do it with Mach, but emc2 is not quite the same ;) That is a truth! Pico tried to get their drives and interface cards supported by Mach but to date they have been unsuccessful. My advice on how to proceed. First study a bit about EMC2 by downloading and building a PC with the Live CDROM. Start up emc2 and look around a bit at the Hardware Abstraction Layer. That install also gives you a couple of manuals that you can have a look at for further info. Second is to get yourself hooked into the comm networks, lists and ircs. Third remember that "we" are a collection of unpaid folk who are working here for mutual benefit. If all what you want to do is make chips using EMC2, you might consider hiring a consultant. If you choose the consultant path, a note here to that effect should get several interested folk. Rayh - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Abort messes up position
On Sat, Mar 31, 2007 at 07:44:55AM -0600, andyholcomb wrote: > I have not found a lot of info on g54, what would be a good procedure > for the use of g54? Do I just set all of my zeros using the right click > and when I get all three axises do I just type g54 in the mdi mode? > > Andy Dave E said earlier how he sets the offsets in tkemc. G54 is the default coordinate system that's in effect when the machine starts, and after M2 etc. But if you have no home position you could just use the Home button which is a lot simpler. Like I said in my previous message, right clicking is not involved (that is the point - we are avoiding tkemc's right click stuff) Have you tried the AXIS frontend and the touch-off feature? I'd like to hear whether that works how you expect. Chris - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] EMC Supported Boards and more
Hi all. Been looking a little into EMC2 and in the next week will be able to compare it to the software I currently use on the VMC (mach). I do really want to get away from Parallel ports and maybe even step/dir drives. I try not to use steppers under any circumstances. My biggest major project is my Hardinge HXL-S CNC lathe which has been a long battle to get as far as I have got with limited time available. I also have two gang tooled lathes in the queue. Anyways, had a quick look at the boards supported by EMC2 and it does seem that they are all passive devices ie not motion controllers per se as say a DeltaTau or Galil card would be. But rather convenient i/o cards. Do they offer performance advantages over the parallel port other than the additional i/o available? Is it likely that EMC2 will support so called intelligent motion controllers? Any intention to support external PLC's over modbus? What would the experienced emc2 guys here suggest as far as the type I should use for the lathe above as an example? Currently it has new servo motors (brushed) and drives (step/dir input) but the machine also needs a load more i/o for the other systems on the machine. It has a 1024 lpr encoder on the spindle which I would like to exploit rather than just an index signal. I know how I would do it with Mach, but emc2 is not quite the same ;) Regards Wayne. -- --- Wayne M Weedon Email: [EMAIL PROTECTED] Fdos Design Poole UK Tel +44-1202-677025Fax +44-1202-770515 Mobile: 07774 439915 Specialists in small batch & Production Mechanical/Electrical Engineering --- - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Axis Question
On Fri, Mar 30, 2007 at 02:27:55PM -0500, Andy Holcomb wrote: > On Axis > > When I press the "END" button, it pulls up the box, I type in 2, press > enter and it displays 4. When I type in -2 it displays -4 > > Is me or my machine on drugs? I can't reproduce that here. Please provide more details to the mailing list so that we can get this figured out. Assuming that you are showing "relative" coordinates (check the bar at the bottom), when you press X END 2.0 ENTER, the current X position should show as 2.0. Before you press ENTER, the number below the entry field should also show 2.0. (If you're showing "machine" coordinates, then the readout wouldn't change) Make sure you don't have any other modal offset-like codes in effect. For instance, enter G92.1 on the MDI tab to cancel the G92 offset and set the G92 offset to zero. Please also try this using a copy of the sim/axis sample configuration. That will reveal whether it's configuration-dependent. Send any reply to the list. My e-mail access will be spotty for the next few weeks, but I hope other developers can help get to the bottom of this issue. Jeff - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Abort messes up position
I have not found a lot of info on g54, what would be a good procedure for the use of g54? Do I just set all of my zeros using the right click and when I get all three axises do I just type g54 in the mdi mode? Andy Chris Radek wrote: >On Fri, Mar 30, 2007 at 01:37:49PM -0500, Andy Holcomb wrote: > > >>This seams like it would be great for a machine that has a homed >>position, but on a machine without, it smells. Your telling me I have to >>do work and type in g54 x every time I want to zero an axis? >> >> > >If your machine does not have home switches or a home position (which >means you can't use soft limits for overtravel protection) you can set >the soft limits to large numbers in the INI file, and use the Home >button to zero an axis. > >Until/unless tkemc is fixed to do something more useful/permanent when >an axis is right-clicked I just suggest you avoid right-clicking. >The current behavior is just confusing I think. > >Using G54 or Home are two ways to avoid it. > >Chris > >- >Take Surveys. Earn Cash. Influence the Future of IT >Join SourceForge.net's Techsay panel and you'll get the chance to share your >opinions on IT & business topics through brief surveys-and earn cash >http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >___ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users > > > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
