I have a B-axis that will not rotate all the time. If I take it loose from the mount so all I am trying to move is the motor it seems to try and then give an 411 alarm on the Fanuc 16i control. If I disconnect the motor (power and encoder) and turn the machine off overnight. Whe I come into work the next morning the B-axis will work just fine. If I leave it hooked up the next morning it might not or might work. I have tried several procdures and checks and it seems to be the motor or the Fanuc amp. Help if you can, this machine has been done for over a year and it is my job to get it running.