Controlling the motor (spindle) with Mach3

[magicniner]

Hi Virgin,

Ok well first you say the machine is working so would guess you have some type of breakout board already.? If you are not sure then you need to take pictures of the control box so we can see what you have.
.

Plain Vanilla 4-Axis control only with Home, Limit and E-Stop inputs using the PC's onboard PP (I added the 4th to the 3-axis box)
The PC has a second PP.
He wants to add On/Off/RPM control using the second PP.