On Tuesday 09 April 2019 23:02:46 Thaddeus Waldner wrote: > Assuming you unplug the rotary axis when you remove it, you could > simply use a normally closed homing switch that unplugs with the axis. > Problem with this is it wouldn’t let you use the fast approach, slow > home sequence with a single switch. > > Thaddeus Waldner > Newdale School > Elkton, SD 57026 > > ________________________________ > From: andy pugh <bodge...@gmail.com> > Sent: Tuesday, April 9, 2019 9:34 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Leaving an axis out of the home sequence AND > (continued:) > > On Wed, 10 Apr 2019 at 02:33, Gene Heskett <ghesk...@shentel.net> wrote: > > out of the logic that determines whether the machine will run gcode > > when that A axis has not been homed because its unplugged, off the > > machine and stored and either is unhomed, or was never homed since > > this power up. > > The simplest is probably to set it for immediate homing (home search > velocity zero) but have it in the homing sequence. > > If you want it to physically home when present, but not home when > absent, automatically, then it's harder. I imagine that some HAL logic > to detect presence or absence and a mux2 to switch between real and > simulated home (wcomp looking at apparent position of the stepgen?) > unplugging it isn't practical without adding a plug in the switch cable, but some timers could simulate that, and a mux2 to steer the timers or the switch could work. I'll have see if I can set something up along those lines.
More ideas. Thanks Thaddeus. > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1916 > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
