Re: [Emc-users] mux_generic
Hi i did find a problem --- add -bit-- net mode-out mux-gen.00.out-bit = hm2_5i20.0.gpio.040.out pin need to show -bit. what happen next--- no more error massage -- and instead open linuxcnc control --all screen become black and a lot of code -- looks like old dos -or like in terminals --. --one massage say --confuse kornel-- something like that. what it can be? . i think that ram maybe not big enough. computer open ok, i can go to the linuxcnc file - open hal file but when i try to start linuxcnc all screen become black background and a lot of code. can it be that mux generic requires bigger ram ? thanks aram On Tue, Jan 6, 2015 at 2:00 AM, andy pugh bodge...@gmail.com wrote: On 6 January 2015 at 04:08, a k pccncmach...@gmail.com wrote: maybe mux-gen.00.sel-int--should be -- mux-gen.00.sel-in1 No. The manpage is quite clear about the pin namings if nothing else. http://www.linuxcnc.org/docs/html/man/man9/mux_generic.9.html If you only have 2 values and the selector type is a bit then by all means use mux2. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
Perhaps Robert Ash will not sign up for Google Plus... But perhaps Ash Robert could.. ? ;-) On 1/9/2015 10:07 AM, Robert Ash wrote: Not much good for myself not being a Googlian Have to register for access to Plus stuff, not gonna happen On 25 December 2014 at 04:47, Gregg Eshelman g_ala...@yahoo.com wrote: Andy's version is here: https://plus.google.com/photos/108164504656404380542?pid=5832689638364145858oid=108164504656404380542 -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
Not much good for myself not being a Googlian Have to register for access to Plus stuff, not gonna happen On 25 December 2014 at 04:47, Gregg Eshelman g_ala...@yahoo.com wrote: Andy's version is here: https://plus.google.com/photos/108164504656404380542?pid=5832689638364145858oid=108164504656404380542 -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
On 9 January 2015 at 15:07, Robert Ash mcgy...@tapq.com wrote: Not much good for myself not being a Googlian Have to register for access to Plus stuff, not gonna happen. http://youtu.be/_P027KQ8ZHo But then YouTube is part of Google now, so probably also excluded? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Printing on our version of wheezy
Greetings; I've been screwing around, trying to make my printers work, and while I can wake them up, no paper comes out. The cups error_log: HL3170CDW: error while loading shared libraries: libpoppler.so.5: cannot open shared object file: No such file or directory Seems to be the show stopper. I've no clue where to get this dependency because the previous ubu install did not use it. Googling around, it isn't the latest version either. That error above was generated AFTER I had downloaded the most recent debs for that printer from support.brother.com, installed them with dpkg, and reconfigured it in a root session of firefox, restarted cups, and attempted to print the cups test page. So, since there does not appear to be a libpopplar.so.5 existing on either the wheezy drive, nor in the old ubu 10.04.4 LTS drive, where can I get it? Thanks guys. Cheers, Gene Heskett -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What was the name of that board?
The grbl project might be worth a look too. On 2015-01-09 05:58, Sven Wesley wrote: 2015-01-08 23:47 GMT+01:00 Sven Wesley svenne.d...@gmail.com: Thanks Viesturs but that's not the one. There is another one complete with display and everything that is fully compliant with our G-code. Gotta find it... Found it! In the mail thread with the subject I'm going to build something small, need a cheap stepper driver, answer by Kerry Lynn. It's the TinyG setup I was looking for. https://www.synthetos.com/what-is-tinyg-and-why/ https://www.youtube.com/watch?v=Ym3K71dbbVw /S -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
I could see a single home switch being advantageous combined with home to index. - Original Message - From: Viesturs Lācis viesturs.la...@gmail.com To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Friday, January 9, 2015 11:45:06 AM Subject: Re: [Emc-users] Dual servo motor gantry 2015-01-09 17:57 GMT+02:00 Eric H. Johnson ejohn...@camalytics.com: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Correct me, if I am wrong, but AFAIK adding deadband will added also in the positioning precision by definition, I seriously doubt that it is acceptable. Any reason not to add another homeswitch, so that each of those joints has one and treat it as a normal gantry machine? Viesturs -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
I did one of these several years ago. The machine has 1 KW servos on each end of the gantry driving ball screws.The gantry was quite rigid so when the power was removed it self squared. There was one one home switch. I ended up using servo drives in step and direction mode and fed them with a pulse train from LinuxCNC. That worked out fine. I fed the same step and direction signal to each gantry drive. If there is any significant following error on either drive, it kicks out the controls so the gantry cannot become racked out of shape. It has been running like that now for over 3 years with no issues and the machine runs up to about 700 ipm. The machine runs every day, sometimes two shifts per day. I considered doing two separate closed loop axes back to the PC, but I thought it would be easier to try the step and direction approach first. That worked, so I stuck with it. No regrets on that decision. Dave On 1/9/2015 10:57 AM, Eric H. Johnson wrote: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d77849c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Printing on our version of wheezy
I tried to print to a network printer from sneezy and never got that to work. Something about tried 3 times and gave up... odd that it could not see the network printer either when I tried to configure it. JT On 1/9/2015 9:41 AM, Gene Heskett wrote: Greetings; I've been screwing around, trying to make my printers work, and while I can wake them up, no paper comes out. The cups error_log: HL3170CDW: error while loading shared libraries: libpoppler.so.5: cannot open shared object file: No such file or directory Seems to be the show stopper. I've no clue where to get this dependency because the previous ubu install did not use it. Googling around, it isn't the latest version either. That error above was generated AFTER I had downloaded the most recent debs for that printer from support.brother.com, installed them with dpkg, and reconfigured it in a root session of firefox, restarted cups, and attempted to print the cups test page. So, since there does not appear to be a libpopplar.so.5 existing on either the wheezy drive, nor in the old ubu 10.04.4 LTS drive, where can I get it? Thanks guys. Cheers, Gene Heskett -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What was the name of that board?
On Friday 09 January 2015 05:58:14 Sven Wesley wrote: 2015-01-08 23:47 GMT+01:00 Sven Wesley svenne.d...@gmail.com: Thanks Viesturs but that's not the one. There is another one complete with display and everything that is fully compliant with our G-code. Gotta find it... Found it! In the mail thread with the subject I'm going to build something small, need a cheap stepper driver, answer by Kerry Lynn. It's the TinyG setup I was looking for. https://www.synthetos.com/what-is-tinyg-and-why/ https://www.youtube.com/watch?v=Ym3K71dbbVw This was some time ago it seems. You could also use one of the Machinekit supported boards and get the full Machinekit/LinuxCNC experience: http://blog.machinekit.io/p/hardware-capes.html Grbl is the Arduino approach for CNC control. Not very interesting in my opinion since everything is going into the SoC direction. _ Alexander -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
On 01/09/2015 09:56 AM, andy pugh wrote: On 9 January 2015 at 17:48, Kirk Wallace kwall...@wallacecompany.com wrote: Oops, I missed the exclusive nature of the link. I really wished that people would _not_ use free services. The pictures are on Picasa, but Google auto-redirect to Google+ if you have a Google account. The files are still available on Picasa, but it takes a bit of URL-wrangling to get there. https://picasaweb.google.com/108164504656404380542/CNCUnsorted?noredirect=1#6047572913175439346 (note the manually-inserted noredirect=1) Sorry for my comments Andy. This shows how frustrating it can be to protect oneself even when being fairly paranoid. I suppose any Google search links to my self-hosted pages have the same problem. Whatever happened to Don't be evil. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
On 9 January 2015 at 18:05, Kirk Wallace kwall...@wallacecompany.com wrote: Whatever happened to Don't be evil. I don't think that they are actually being evil, just over-helpful and failing to consider the full effects of their changes. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
2015-01-09 17:57 GMT+02:00 Eric H. Johnson ejohn...@camalytics.com: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Correct me, if I am wrong, but AFAIK adding deadband will added also in the positioning precision by definition, I seriously doubt that it is acceptable. Any reason not to add another homeswitch, so that each of those joints has one and treat it as a normal gantry machine? Viesturs -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
On 01/09/2015 07:07 AM, Robert Ash wrote: Not much good for myself not being a Googlian Have to register for access to Plus stuff, not gonna happen Oops, I missed the exclusive nature of the link. I really wished that people would _not_ use free services. They certainly are not free to the user or those around them. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
On 9 January 2015 at 17:48, Kirk Wallace kwall...@wallacecompany.com wrote: Oops, I missed the exclusive nature of the link. I really wished that people would _not_ use free services. The pictures are on Picasa, but Google auto-redirect to Google+ if you have a Google account. The files are still available on Picasa, but it takes a bit of URL-wrangling to get there. https://picasaweb.google.com/108164504656404380542/CNCUnsorted?noredirect=1#6047572913175439346 (note the manually-inserted noredirect=1) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Printing on our version of wheezy
On 01/09/2015 08:54 AM, John Thornton wrote: I tried to print to a network printer from sneezy and never got that to work. Something about tried 3 times and gave up... odd that it could not see the network printer either when I tried to configure it. JT Printer daemon needs to listen on port 631 and firewall has to allow connections on that port. ss -lnt command returns the following line when cups is listening: LISTEN 0 128 *:631 *:* see more bellow On 1/9/2015 9:41 AM, Gene Heskett wrote: Greetings; I've been screwing around, trying to make my printers work, and while I can wake them up, no paper comes out. The cups error_log: HL3170CDW: error while loading shared libraries: libpoppler.so.5: cannot open shared object file: No such file or directory Seems to be the show stopper. I've no clue where to get this dependency because the previous ubu install did not use it. Googling around, it isn't the latest version either. That error above was generated AFTER I had downloaded the most recent debs for that printer from support.brother.com, installed them with dpkg, and reconfigured it in a root session of firefox, restarted cups, and attempted to print the cups test page. So, since there does not appear to be a libpopplar.so.5 existing on either the wheezy drive, nor in the old ubu 10.04.4 LTS drive, where can I get it? Thanks guys. Cheers, Gene Heskett Gene, have you tried apt-get search libpopplar? It returns a number of related package names on Kubuntu 14.04: libpoppler-cpp-dev - PDF rendering library -- development files (CPP interface) libpoppler-cpp0 - PDF rendering library (CPP shared library) libpoppler-dev - PDF rendering library -- development files ... among them. However, I have none of that installed on my system with working CUPS. I doubt you need it. apt-get search cups returns a number of packages, some of which might be needed in addition to what you already have to get your printer going. Have you tried CUPS setup with web browser http://localhost:631 to manage the printer? Try to use simple postscript driver if your printer model is not listed. Worked for me many times. -- Rafael -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Dual servo motor gantry
Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d77849c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
Hi Raymond, I used Automation Direct servo drives on that job and they can be setup to shutdown on excessive following error. (Deviation from the step and direction commanded position).They can also be shutdown by an external input.So if you cross wire the drives so if one shuts down on following error, it shuts down the other drive and visa versa, it becomes a self protecting system. If either drive has excessive following error it kills itself and also the other drive.That prevents the gantry from being racked out of position if something goes wrong. A common reset wired to both drives can also bring them back to life after a shutdown. It works well and is quite simple once it is implemented. Dave On 1/9/2015 4:03 PM, rayj wrote: Greetings Dave, I have some long term plans to build a gantry similar to the one you describe. When you say it kicks out the controls, I'm not sure what you mean. Is there some physical safeguard, like a detent or or clutch, or is it something in the software you're talking about. TIA Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 01/09/2015 10:47 AM, Dave Cole wrote: I did one of these several years ago. The machine has 1 KW servos on each end of the gantry driving ball screws.The gantry was quite rigid so when the power was removed it self squared. There was one one home switch. I ended up using servo drives in step and direction mode and fed them with a pulse train from LinuxCNC. That worked out fine. I fed the same step and direction signal to each gantry drive. If there is any significant following error on either drive, it kicks out the controls so the gantry cannot become racked out of shape. It has been running like that now for over 3 years with no issues and the machine runs up to about 700 ipm. The machine runs every day, sometimes two shifts per day. I considered doing two separate closed loop axes back to the PC, but I thought it would be easier to try the step and direction approach first. That worked, so I stuck with it. No regrets on that decision. Dave On 1/9/2015 10:57 AM, Eric H. Johnson wrote: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d77849c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now.
Re: [Emc-users] Dual servo motor gantry
Viesturs, It might add some positioning error, but I am thinking of something on the order of a couple hundredths of an inch or less. The application is an ultrasonic knife cutting table, so with the flex of the blade I can certainly tolerate a couple hundredths of an inch error on one side of the gantry. The motors and amplifiers are identical, so performance should be very close to identical as well. I do not see two home switches as viable, it is a prox switch, so precisely aligning the field effect of two such switches would be a nightmare, not to mention how easily one could get knocked out of alignment. Thanks, Eric Correct me, if I am wrong, but AFAIK adding deadband will added also in the positioning precision by definition, I seriously doubt that it is acceptable. Any reason not to add another homeswitch, so that each of those joints has one and treat it as a normal gantry machine? -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
Dave, I do not think I have that option, at least not without changing amplifiers. The only interface to the existing amplifiers is a -10 to 10V signal. This configuration with stepper motors is pretty much falling off a log easy. I have a 4' x 8' stepper table configured exactly that way. Thanks, Eric I did one of these several years ago. The machine has 1 KW servos on each end of the gantry driving ball screws.The gantry was quite rigid so when the power was removed it self squared. There was one one home switch. I ended up using servo drives in step and direction mode and fed them with a pulse train from LinuxCNC. That worked out fine. I fed the same step and direction signal to each gantry drive. If there is any significant following error on either drive, it kicks out the controls so the gantry cannot become racked out of shape. It has been running like that now for over 3 years with no issues and the machine runs up to about 700 ipm. The machine runs every day, sometimes two shifts per day. I considered doing two separate closed loop axes back to the PC, but I thought it would be easier to try the step and direction approach first. That worked, so I stuck with it. No regrets on that decision. Dave On 1/9/2015 10:57 AM, Eric H. Johnson wrote: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v 4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d7784 9c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
On 9 January 2015 at 20:09, Eric H. Johnson ejohn...@camalytics.com wrote: I do not think I have that option, at least not without changing amplifiers. The only interface to the existing amplifiers is a -10 to 10V signal. This configuration with stepper motors is pretty much falling off a log easy. It shouldn't be horribly hard with servos, as long as the motors are in control at all times. The danger is runaway during the tuning phase. I think it might be wise to set up something in HAL that kills the system if the two encoders differ in value by more than a small amount. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
Dave, Thanks for the reply. So you have position feedback from the motor shafts, essentially a servo system with stepper motors, kinda? And if the detected position differs from commanded position by a specified amount, it stops? Did the motors come with the feedback hardware or did you add it? If you added it, what hardware did you use? Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 01/09/2015 03:40 PM, Dave Cole wrote: Hi Raymond, I used Automation Direct servo drives on that job and they can be setup to shutdown on excessive following error. (Deviation from the step and direction commanded position).They can also be shutdown by an external input.So if you cross wire the drives so if one shuts down on following error, it shuts down the other drive and visa versa, it becomes a self protecting system. If either drive has excessive following error it kills itself and also the other drive.That prevents the gantry from being racked out of position if something goes wrong. A common reset wired to both drives can also bring them back to life after a shutdown. It works well and is quite simple once it is implemented. Dave On 1/9/2015 4:03 PM, rayj wrote: Greetings Dave, I have some long term plans to build a gantry similar to the one you describe. When you say it kicks out the controls, I'm not sure what you mean. Is there some physical safeguard, like a detent or or clutch, or is it something in the software you're talking about. TIA Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 01/09/2015 10:47 AM, Dave Cole wrote: I did one of these several years ago. The machine has 1 KW servos on each end of the gantry driving ball screws.The gantry was quite rigid so when the power was removed it self squared. There was one one home switch. I ended up using servo drives in step and direction mode and fed them with a pulse train from LinuxCNC. That worked out fine. I fed the same step and direction signal to each gantry drive. If there is any significant following error on either drive, it kicks out the controls so the gantry cannot become racked out of shape. It has been running like that now for over 3 years with no issues and the machine runs up to about 700 ipm. The machine runs every day, sometimes two shifts per day. I considered doing two separate closed loop axes back to the PC, but I thought it would be easier to try the step and direction approach first. That worked, so I stuck with it. No regrets on that decision. Dave On 1/9/2015 10:57 AM, Eric H. Johnson wrote: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d77849c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in
Re: [Emc-users] What was the name of that board?
@Alexander, what is meant by SoC? Google failed me there. On 2015-01-09 20:00, Alexander Rössler wrote: On Friday 09 January 2015 05:58:14 Sven Wesley wrote: 2015-01-08 23:47 GMT+01:00 Sven Wesley svenne.d...@gmail.com: Thanks Viesturs but that's not the one. There is another one complete with display and everything that is fully compliant with our G-code. Gotta find it... Found it! In the mail thread with the subject I'm going to build something small, need a cheap stepper driver, answer by Kerry Lynn. It's the TinyG setup I was looking for. https://www.synthetos.com/what-is-tinyg-and-why/ https://www.youtube.com/watch?v=Ym3K71dbbVw This was some time ago it seems. You could also use one of the Machinekit supported boards and get the full Machinekit/LinuxCNC experience: http://blog.machinekit.io/p/hardware-capes.html Grbl is the Arduino approach for CNC control. Not very interesting in my opinion since everything is going into the SoC direction. _ Alexander -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3 phase washing machine motor
I don't equate Google Plus with evil... by a long shot. And if you want to stay anonymous, it is not hard to setup a Google account with a screen name. It is really simple to do. Dave On 1/9/2015 1:16 PM, andy pugh wrote: On 9 January 2015 at 18:05, Kirk Wallace kwall...@wallacecompany.com wrote: Whatever happened to Don't be evil. I don't think that they are actually being evil, just over-helpful and failing to consider the full effects of their changes. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
Greetings Dave, I have some long term plans to build a gantry similar to the one you describe. When you say it kicks out the controls, I'm not sure what you mean. Is there some physical safeguard, like a detent or or clutch, or is it something in the software you're talking about. TIA Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 01/09/2015 10:47 AM, Dave Cole wrote: I did one of these several years ago. The machine has 1 KW servos on each end of the gantry driving ball screws.The gantry was quite rigid so when the power was removed it self squared. There was one one home switch. I ended up using servo drives in step and direction mode and fed them with a pulse train from LinuxCNC. That worked out fine. I fed the same step and direction signal to each gantry drive. If there is any significant following error on either drive, it kicks out the controls so the gantry cannot become racked out of shape. It has been running like that now for over 3 years with no issues and the machine runs up to about 700 ipm. The machine runs every day, sometimes two shifts per day. I considered doing two separate closed loop axes back to the PC, but I thought it would be easier to try the step and direction approach first. That worked, so I stuck with it. No regrets on that decision. Dave On 1/9/2015 10:57 AM, Eric H. Johnson wrote: Hi all, I am looking to do an upgrade on a large XY table where the gantry is driven by to oppositely mounted servo motors. Both sets of encoders run back to the existing controller. Can I just give a generous deadband to the slave axis, or is there a better way to address this configuration so the motors don't fight each other. I believe it uses a single home switch which can then be fed to both axes for purposes of homing. Anyone done this? Anything else to look out for? Thanks, Eric http://t.senaltres.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LCQRN 7fcnk8RJ6s6N8rBF7Rd3_yKW18Chwm1k1H6H0?si=6453247850577920pi=8828d77849c9460 b95fcaf96870fbe9d -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dual servo motor gantry
On 1/9/2015 3:30 PM, andy pugh wrote: On 9 January 2015 at 20:09, Eric H. Johnson ejohn...@camalytics.com wrote: I do not think I have that option, at least not without changing amplifiers. The only interface to the existing amplifiers is a -10 to 10V signal. This configuration with stepper motors is pretty much falling off a log easy. It shouldn't be horribly hard with servos, as long as the motors are in control at all times. The danger is runaway during the tuning phase. I think it might be wise to set up something in HAL that kills the system if the two encoders differ in value by more than a small amount. I agree with Andy. Doing it with servos should not be hard if your gantry self squares. (IE, when power is off the gantry is adequately square). So then you enable the servos, the motors are both at 0 position and you can go from there. If your encoder feedback position differs between motors, shutdown the motors. If the drives are digital and you can tune them with the same exact tuning numbers this should not be too difficult. If you have analog drives, it might get interesting trying to match the drive tuning so you don't trip out on encoder differences (position deviation from side to side). Dave --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What was the name of that board?
2015-01-09 6:58 GMT+02:00 Sven Wesley svenne.d...@gmail.com: 2015-01-08 23:47 GMT+01:00 Sven Wesley svenne.d...@gmail.com: Thanks Viesturs but that's not the one. There is another one complete with display and everything that is fully compliant with our G-code. Gotta find it... Found it! In the mail thread with the subject I'm going to build something small, need a cheap stepper driver, answer by Kerry Lynn. It's the TinyG setup I was looking for. https://www.synthetos.com/what-is-tinyg-and-why/ https://www.youtube.com/watch?v=Ym3K71dbbVw Oh, thanks, I had missed this one. I took a brief look at their webpage and I do not understand, how are they better in multi-axis (beyond 3 or 4 axes, as they put it) than LinuxCNC or similar stuff. They say that interpreter is running on that board, broadcast all the commands to all the boards, but each board executes only those commands it is responsible for. So far I understand this concept. But I do not understand, how they intend to extend beyond 9 axes in LinuxCNC-compatible g-code (number of joints certainly is not an issue)... Viesturs -- Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
