[mactec54]

Good question on the jumpers. I don't have the manual or even a model number for the motor. I do know it is a Mitsubishi 3.7KW. I can run it forward and reverse. The only thing that's not working now is the speed. The MB3 board is outputting a higher voltage with a lower S word and a lower voltage with a higher S word.

Mach3 will not show the RPM unless you use an encoder input with a single pulse per rev