Originally Posted by
Brady Watson
The proper home location on your machine is actually South-West (bottom left when standing in 'front' with the long X axis going left & right), just like the upper right (+,+) quadrant of a cartesian grid. You can clock the gantry 180 to make it North-East when standing at the same point...around the other side, it will be South-West.
4-wire PRTs only (not 6-wire PR) - WITH THE CONTROL BOX OFF...You can also, swap the green and black wires in the connector to reverse motor direction. You would have to do this for BOTH X motors. Y motor if it is running the 'wrong' way. If running SB2, this is your only option. If running SB3, sign the VU for that axis with a (-) negative sign in front of the unit value to reverse. You only need to switch wires in ONE of ANY Wago connector. f - shaped Wago tool makes it a quick job. Again...Make sure that control box is OFF and left to sit (drain down power supply & capacitors) for 5 full minutes or you WILL smoke a motor driver.
-B