I have the same machine and control. And trying to learn to operate the control. However, in the manual mode and if you get to the m code input and press help it will give a list of m codes. Mine was m26, 27, 28. Forward, Off, Reverse respectively.

My problem is I am running a warmup program and try to start the conveyor and it will not startup. Even though my program has an M3 in it. I have to go to the M menu and input the M3 code to run the program. I did try to input the M26 code also and no dice on the conveyor. Any assistance would be greatly appreciated. Thanks