8.1 Fatal System Alarms

Code	Warning Message	Solution
	System check sum error. CNC self-diagnosis found problem.	Please turn off the system and wait 10 seconds before restart. If there are still problems, please contact the maintenance staff and reinstall the controller software.
501	PLC alarm	Problem with machine control, according to page instruction to resolve the problem or contact manufacturer.
514	X position control loop fail	Close for 10 seconds and re-open, if problem continue, please check X, Y, Z, A, B, C axis servo driver, motor and connection to be correct or not. 0×0: Max Lag Error exceeded 0×1: When velocity command is 0, the encoder changes 0×2: When velocity command is not 0, the encoder remains unchanged 0×4: When the DA value is greater than a certain threshold, the encoder does not change (EtherCAT controller has no such judgment)
515	Y axis servo position loop not normal	Same as 514.
516	Z axis servo position loop not normal	Same as 514.
517	A axis servo position loop not normal	Same as 514.
551	B axis servo position loop not normal	Same as 514.
552	C axis servo position loop not normal	Same as 514.
518	PLC Alarm (EMG input is on) Emergency stop	According to PLC dealing with emergency machine stop, it could be due to e.g. EMG button is pressed, motor or servo motor driver is broken.
519	X axis not in-position time out	X, Y, Z, A, B, C axis servo system cannot follow, many reason can cause it. Resolution same as above.
520	Y axis not in-position time out	Same as 519.
521	Z axis not in-position time out	Same as 519.
522	A axis not in-position time out	Same as 519.
553	B axis not in-position time out	Same as 519.
554	C axis not in-position time out	Same as 519.
531	Machine parameter error, please load backup file	Machine control parameter got problem, please inform machine manufacturer or retailer's maintenance people to re-enter.
546	Rigid tapping spindle motor close loop not working normal	Check the motor driver, is the motor and cable properly connected.