On Wed, 10 Apr 2019 at 04:49, John Dammeyer <jo...@autoartisans.com> wrote:
> Since my Harmonic Drive/STMBL are an AC Servo ... > The question then is whether or not the system, when starting can/will > recognize an input which is a unit present signal. This is a solved problem :-) (I have exactly the same 4th axis as you) I have a loop of wire on two spare pins on the connector where the 4th axis plugs in to the machine: This drives an input on the STMBL. The STMBL HV enable is only set (HAL Logic) if this input indicates motor-present. I just accept having an A axis display even when the axis isn't connected. And the machine will f-error if you try to move or jog it. It might be possible to load different configs depending on that signal. A bash script can send halcmd commands to load the hostmot2 driver, start the threads, read a pin, and then run one of two or more linuxcnc startups (after unloading Hostmot2 and realtime, probably.) Maybe even an edited version of the LinuxCNC startup script: Personally I haven't cared enough about the vestigial axis to bother :-) -- 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
