No, each axis uses it's own step and direction pins. When you enable slaving in Mach3, Mach3 handles the syncing of the motors. Make sure all settings in motor tuning (and homing if using two home switches) are exactly the same for the slaved motors.The X and A must be set up in Mach3 with the same step and direction pins from the port to drive both the X axis motors???
No, call them whatever you want.Does it matter what I call X and what I call Y? I want to call the front/back motion of the table the X, the left/right motion of the table the Y. Will this effect G code?