Gabe,

By the way, the mapping for the encoder on the manual is incorrect. It took me a long time to figure the correct map by examining other cnc4pc manuals. Currently I'm using an encoder with an induction motor as spindle motor and it works fine (control software is Mach4).

I mean your problem might be a wrong wiring if you did the wiring according to the manual. Let me know if you want the correct one.