X Homing Not Working
Hello, I am completely new to this technology and have been tasked with troubleshooting a problem at my job. I am having an issue with homing. We are using Repetier Host and a RAMPS board to control two stepper motors for a membrane welding machine. The motors move the machine down a long table in a single direction, so the only direction being used is X, not Y or Z. Scripts specifying motion in the positive X direction work fine, but homing X has stoppped working. This is both using the actual X home button as well as the code G28 X0. When I try either, the motors briefly turn in the wrong direction (away from home) for a second then stop, no matter where they are along the X axis. We are using magnetic proximity sensors for the endstops and they seem to be working fine. The malfunction happens regardless of the state of the endstops. The problem seemed to come out of nowhere; nothing in the configuration or firmware was changed as far as I know. Also, when I try M119, absolutely nothing happens. Not sure if this is related.