Irving,

I was looking at just manual hot wire on/off/temp control initially and look into the automation down the track.

Looks like my best option is to make up another DB25 cable configured to the pinouts you gave to run GMFC on my TB6560 board. Then I can swap DB25 leads to run Mach3 when I need. Thanks so much for clearing up the MM2001 interface question and providing all the pinouts, very helpful info.

thanks
Rick