645 gsm axis y1 hasnt been initialized results

Universal Advantis Y1 axis error code 10201

Electronics Forum | Fri Jul 07 17:17:43 EDT 2023 | ttheis

We swapped the Y1 and Y2 pc800 controllers with no change. We swapped out the UIMC III-I cards from another machine with no change. VRM amps all look OK, no errors. The machine moves the head both in the x and y directions during the zeroing attemp