> On 2 Jul 2021, at 9:03 am, Ralph Stirling <[email protected]> > wrote: > > Some developer went to the trouble to add the very nice > FOAM mode to axis, which looks great. There just seems > to be some problem with kinematics that won't drive the > second pair of joints. I've tried changing to joints 6 and 7 > instead of 2 and 3 for the U and V axes, but that didn't > work. There is either missing information in the docs for > making this work, or a bug, not sure which yet. I'll keep > reading source code and experimenting. > > — Ralph
There is a Axis sim that may shed some light: <https://github.com/LinuxCNC/linuxcnc/tree/master/configs/sim/axis/foam <https://github.com/LinuxCNC/linuxcnc/tree/master/configs/sim/axis/foam>> > ________________________________________ > From: Todd Zuercher [[email protected]] > Sent: Thursday, July 1, 2021 2:08 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] four axis foam cutter 2.8 config > > CAUTION: This email originated from outside the Walla Walla University email > system. > > > I don't think there are a whole lot of foam cutters out there period. But > with my very limited knowledge of the subject, I would have thought the JA > version would be better suited for it. It is possible that some of the > workarounds that had to be done to make the wire cutter work with the > earlier versions are no longer needed and causing problems in your new > config. But I really have no idea, what the problem(s) could be. > > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: Ralph Stirling <[email protected]> > Sent: Thursday, July 01, 2021 3:25 PM > To: [email protected] > Subject: Re: [Emc-users] four axis foam cutter 2.8 config > > [EXTERNAL EMAIL] Be sure links are safe. > > I'm getting the impression that I'm the first one to actually try post-2.7 > linuxcnc on 4-axis foam cutter hardware. I've set up 2.9-pre0 from git so I > can start poking in the source code. 2.9-pre0 behaves the same way. I have > verified that axis.x.pos-cmd and joint.0.pos-cmd both change as expected, but > axis.y.pos-cmd changes while joint.2.pos-cmd does not. So something is > broken in joint-axis code for the XY;UV geometry. > > -- Ralph > ________________________________________ > From: Ralph Stirling > Sent: Wednesday, June 30, 2021 5:20 PM > To: [email protected] > Subject: four axis foam cutter 2.8 config > > I upgraded our 4-axis hotwire foam cutter to 2.8 recently, and have not been > able to get it running again yet. The auto conversion doesn't seem to be > quite sufficient for foam cutter configurations. > > I now have homing on all four axes working (XY;UV), but once homing is > finished I can't jog U or V. The backplot shows motion, but the axes don't > move. > X and Y jog properly. The U and V (and joint 2 and > 3) sections are copied directly from X/0 and Y/1 with only the axis and joint > designation changing. > > Does anybody have a functioning 2.8 foam cutter configuration I could look at? > > Thanks, > -- Ralph > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C395e614813364ec22fb008d93cd67298%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637607714016967745%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=DPF3h8NTz7wqMjFxkYpCpJaAzfTuvOTwDKAjEedJUuk%3D&reserved=0 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C395e614813364ec22fb008d93cd67298%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637607714016967745%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=DPF3h8NTz7wqMjFxkYpCpJaAzfTuvOTwDKAjEedJUuk%3D&reserved=0 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
