Generally the term means Cyclic Redundancy Check, which is a check of data transfer, can be serially or over a bus.
Is there any alarms if the machine does not reset, what is the LED digit display indicating on the main board?
I did read of one cause, I believe it was here that some one posted about using G41, They mentioned that if a G41 or G42 is commanded, but you are not actually moving the tool for 2 or more blocks while in this mode an alarm that turned out to be CRC alarm.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.