Not sure if anyone in here would be able to help me. I have a modified x-carve with a different controller. So I am working on setting up my limit and home switches for my cnc. I would also like to utilize a touch plate to zero out my Z. My initial thought is to use the DB9 on the picture below. with P1, P2, and P3 being the limits and the homes. My question is can I use P4 for my touch plate? This will all be configured in Mach3. Or should I be using the DB25 pins for all of it or part of it? Thank you in advance.
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