Well, I know its been forever, but I finally machined up a mount for the encoder on the spindle. I have the encoder talking with the enc threading module and the read-out is accurate. However, when I try and program in M84 Mach freezes in the 'toolpath generation' window and crashes. I have installed their macro and their g code file. On one the few occasions I was able to cancel out of the toolpaths generation window was able to press run and but the program kept running but wouldn't move past the M84 line. I turned the spindle by hand and the Z axis moved accordingly.
I have the spindle set up on a VFD. I hope thats not a problem.