Trying to figure out what PIN number to use for a touch plate from amazon, it may be over my head but I believe for an ess bob the parallel port is emulated by the ess plug-in. I have not opened the case containing the bob and drivers , wanted to try the easiest thing first so I connected the two wires to an input available from the exterior I have no idea what PIN number is being used but when I touch the alligator clip to the touch plate m3 home lights up on the diagnostic page and goes off when disconnected so I’m sure that is the input I wired to. The question is can I use this as is ? If so what PIN number do I tell Mach3 to look at for the auto z probe input.