@chris-annin Hi Chris, Sorry for late reply, I just got a veru busy first week of school. I tested the terminal block with a multimeter, ...

@chris-annin Hi Chris, I replaced the driver for J4, and it's now working well -- I can jog J4 to rotate in both directions. But I met a...

@chris-annin I set the J4 to open loop mode, the error log disappearred but it still could not rotate reversely. I also tested the J4 driver to contr...

Thank you so much for your speedy reply! I tested the DIR input with a multimeter, and it seems to be working properly, showing positive voltage...