Just finished building my MPCNC. Bought the Rambo 1.4 from V1 so it came with the firmware already preloaded, all the other parts were ordered from Amazon. Eventually I will run dual end tops and have them all wired up but they are currently not plugged into the Rambo, as I have not flashed the dual Endstop firmware.
The issue I am having is that the steppers plugged into E0/E1 (X2/Y2) are not moving at all. Steppers plugged into X1/Y1/Z are all moving correctly. I have tried moving the axis’ from the LCD and repetier host, same issue from both. To rule out bad stepper motors I swapped X2/Y2 motors and plugged them into X1/Y1 spot and they worked correctly. I currently have the belts removed to check if they are working. Set screws on pulleys are tight all around.
-M119 returns X/Y/Z as open
-Fuses are all fine
-Steppers work plugged into X1/Y1
-Power is supplied to the Rambo B/C power inputs from a 350W meanwell PSU