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General Discussion / Z HOME reversed itself

« on: December 18, 2017, 12:50:51 PM »

HI, I am running a small xyz mill with a PMDX422 and MACH4. On Friday everything was working perfectly. I turned on the system this morning and all by itself, the Z axis is homing in the wrong direction? I shut down and restarted. Same problem. I checked the MACH4 configuration and its supposed to be homing in in the POS direction. I switch it from pos to neg and the Z did switch direction. Is this a known problem? Please assist. Thanks Keith.