On Thursday 20 February 2020 10:24:18 Andy Pugh wrote: > > On 20 Feb 2020, at 14:25, Jeff Johnson <john...@superiorroll.com> > > wrote: > > > > > > Any thoughts or ideas on the best way to pull this off? PC? RPi4? > > Which > > Why not add a 4th axis configuration to each machine that might use > it? Then you can properly integrate the motion control? > > You can actually do it with a single config. I have a jumper in one of > the connectors that the rotary connects through. If the system doesn’t > see the link (via an IO pin) it doesn’t enable the axis. Mine actually > f-errors if you try to move the axis, but that would be easy to fix. > I do essentially the same thing w/o the detection jumper. If its unplugged it still has a missimg/undefined home_sequence so its marked as homed whereever it is. Like this in the ini file: [JOINT_3] TYPE = ANGULAR HOME = 0.0 HOME_SEQUENCE = 0 HOME_SEARCH_VEL = 0 HOME_LATCH_VEL = 0 HOME_FINAL_VEL = 0
It, if used, generally gets touched_off someplace just to establish a reference. Just never unplug or plug it in with power applied. To make that easier but its not done yet, I have just obtained some more 40 amp SSR's, and will add an activator link in my .hal file so that all motor power is off and the machine unhomed when E-stop is false. I already soft-start the spindle supply with 2 more relays, driven by motion-enable, one to soft-start that supply thru a 100 ohm 200 watt resistor and another one to bypass the resistor 3 seconds later so I can service its 17 amp max load with a 20 amp breaker, else its unrush will reliably clear a 30 amp breaker. And a 30 is not code on a 10 ga circuit here... > _______________________________________________ > 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis 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
