Thanks Hoss and Hub,
Yes, I read that thread too and tried setting a number of different pulley options but that had no effect.
I have tried getting the signal with the VFD connected and disconnected. By that I mean I am using the ground at pin 7 and the positive voltage to pin 9. From my understanding of how the system works, the VFD analog output to pin 8 should be a percentage of the input voltage providing the input does exceed 12 VDC.
I got the G540 in January or so of last year and I'm wondering if there may have been a revision since then. By looking at it, I can't seem to determine what rev I have.
I'm still thinking I have a Mach3 set up problem if I keep getting the "PWM bumped to minimum setting" message. I'm still scouring every board and user groups I can find, but no luck so far…
I thought the G540 was supposed to be plug and play };'0
-Kevin