On Wednesday 22 March 2017 21:19:11 Jon Elson wrote: > On 03/22/2017 12:24 PM, Gene Heskett wrote: > > Greetings all; > > > > I now have my jogging working well except for one minor detail. > > > > That detail is that from a powerup state of linuxcnc, I have to do a > > keyboard jog, destroying the position restored from the position.txt > > file, before these jog dials work. > > > > What do I have to do to make them work from the gitgo as long as > > focus is on linuxcnc's window? > > > > All the signals are being given to motion, at jog-enable, jog-counts > > and jog-scale are all there for that axis, and I can watch the > > jog-counts changing as I turn the dials but nothing happens until I > > jog with the keyboard once, on each axis I think. > > When I first start up LinuxCNC, I do a home operation.
Since amazon is killing me with slow delivery of the countershaft bearings, and I need to order some hacksaw blades for my big bandsaw, home switches are about the next thing on the agenda Jon. Currently its not running motors to home, just accepting where its at. > I > don't care about the last position, what I do care about, > sometimes, is the offset between machine and G54 > coordinates. After I home, then the offset between these is > restored, and so whatever position is shown on the DRO is > the same, RELATIVE to the PART, as it was when LinuxCNC was > shut down. So, in the case where I had to go back and > perform more operations on a part machined yesterday, I > don't have to touch off to the fixture or part, it is all > restored the the previous setting. (Of course, whatever > fixture was used before must be in the same position.) Agreed, done that many times myself. Works well I find if I don't screw up and do a touch off. I wonder, once I have it searching for homes, is that enough to "cock" the motion so my jog wheels work without priming the pump with a short tap on the arrow keys? I know where I'm putting the X home switch, but haven't concocted a Z location yet. Someplace near the chuck, rigged so it can overrun it and come back over it w/o damaging the switch. That was a bit of a bear on TLM. Wrecked a couple switches getting it just right. > I don't do this all that often, but sometimes I am using the > same setup two days in a row, or need to redo something > after LinuxCNC has been shut down. > > And, if you have not set up sensors to do machine homing, > you are missing a VERY useful feature of LinuxCNC. Absolutely. I find them handier than bottled beer on the G0704 too. > Jon > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
