I am working on getting my CNC4PC C6 card to work still and have gotten it to run wide open all the time until I hit the e-stop. I did some voltage checking and my readings are opposite of what everyone else is getting and it doesnt make alot of sense. Between P1 (gnd) and P2 (wiper) in the off position I get the 11.99vdc. As the control is turned to increase the RPM's (which it does) the voltage drops in proportion to the spindle speed. I didnt buy this mill new it was used very little if it even made a cut but they had already been in the control box and adjusted the small Pots. for the speed and torque so I dont know if they had unhooked any wires or not. Any help would be appreciated. Thanks in advance.
Rick