Can anyone point me in the directon as how properly read my tip volts on my 600? I am connecting CandCNC's THC and for some reason I can't read my tip volts through Mach 3. On the DTHC card I have the raw tip volts wired into the two White wires that should be the electrode and the other wire is connected to my ground clamp. Also I can read the voltage with my multi-meter at these connections.