Dear guys,


I have a Fanuc turning machine, Oi mate TC.

The spindle rotates CW when I run S300 M3. But it does not rotate when I run S300 M4.
So the spindle only rotates clockwise and it does not rotate counter clockwise.
I checked the (M3 and M4) contactor. It works when running M3 and M4 but the motor only response to M3.

Any suggestions?