This is from the "Mach3Mill_Install_Config.pdf":
If the axis moves in the wrong direction (Minus when it should move Plus), there are three ways to fix
the problem. Click the Save button to save the axis settings, then do one of the following:
• Change the Low Active setting for the Dir pin of the axis in Config>Ports and Pins>Motor Outputs
tab (and Apply it).
At first this worked great, but since I indexed the mounting flange on the motor it isn't working right (which has nothing to do with direction of the motor). I move the axis in the plus direction and the DRO's show -, then when I switch the "Low Active setting" and reset Mach3 and move in the plus direction the DRO's still show -.
Sorry about saying it twice, thought I needed to clarify it a little more.
Thanks,
Aero