Hi,

We have a CNC Hardinge Conquest VMC700 with control Fanuc 18M. When we switch on appear us an alarm 414 (Z Axis detection system error ) and we found that in the parameter DGN 204 at bit #6 was on and that mean "the Main CPU board or option 2 board is faulty", the parameter 200 and 201 was clear.

We test changed the wire between servoamplifier and the main board with other axis and worked well (the alarm continue at the axis Z), then we changed the same wire in the main board (axis z per axis y) and the problem was went to axis y.

do you think that the Main CPU board is faulty? or we can do another test to probe that the main cpu work correctly?

Faithfull,
Martin