[paul gibson]

Harvey,

I have a 05 SL20, recently it gave a 175 "ground fault detected" alarm.
After resetting the alarm, the tailstock refuses to advance. Will not respond when programmed, nor when attempting to manually advance. Also now at the start up, the X axis will reference as usual, but we have a delay of a 60 to 120 seconds before the Z axis will reference out. Have noted that the B axis does move when the reference command is invoked, but still it will not function.
All other movement is fine, and the machine preforms accurately despite these symptoms. It has been speculated that an I/O issue may be the cause. Would you have any input on this situation?

Thanks in Advance,
P.G.