I've got a CNCRP 4824 Pro. The touch plate is using pin 13 as its input and I think I've confirmed it's working because I can trigger it by tapping the alligator clip to the brass plate and getting confirmation of pin 13 from Mach3. The VB code is entered as suggested, Mach3 restarted.
When I start Auto Tool Zero the bit ignores the contact with the brass plate and has to be stopped with the EStop. If I clip the alligator clip to the bit, some motor (Z stepper?) "thumps" loudly and rapidly and nothing moves.
I believe I've followed the setup correctly; the results would suggest otherwise. Any help as to where to look for the problem?
Thanks for your help.
Scott