I did confirm my stepper motor controller pinouts on the axis controller, see:


The channels are:
0=pin 16 (this pin seems totally random)
1= pin 15 this is part of the step circuit
2= pin 14 this is also part of the step circuit
3 & 4 = direction circuit
5= communication from this back to other controller. Machine throws error code if this is not hooked up

I'm going to try linuxcnc with the current pinout info, I'd love to crack the serial communication but it seems difficult