I installed Mach 3 v2.63 on my machine after my PC crashed and wouldn't start. I ran this machine successfully for almost two years. In setting up my pinout in which Z pins out port 1 on pin 6 and 7 stp and dir respectively. I only get clockwise rotation.
I swapped out the stepper (IMS Mdrive 23) and that had no result. Swapped keyboard to rule that out. Pinned out onto the X axis and that didn't help. Finally I decide to change the direction pin to 8 instead of 7 because I thought it might be something with the port. That produced no result.
I figured before I went any further I would throw it out there.
Thanks.