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412	_ axis encoder connection is bad	Axis is enabled but a differential encoder signal is not detected. May indicate a loose or severed encoder cable or a bad encoder. This will stop all motion and cancel the job.	Reconnect encoder or repair encoder and/or encoder cable.
413	CPU Failure #01: power down	CPU10 has experienced a problem with the PC reset line. Z80 Failure. Problem with the ZiLOG chip.	Contact Dealer CPU10 will need to be repaired.
414	CPU Failure #02: power down	CPU10 detected CPU failure. DSP failure.	Contact Dealer CPU10 will need to be repaired.
415	CPU fault #XX detected	Invalid stop reason from CPU10.
416	Motion fault #XX detected	Invalid motion status from CPU10. Caused by CPU10 or PCI slot.	Contact Dealer
417	Abnormal end of job	Job ended without reason.
418	Search data not found	Requested search input data not found in loaded CNC file. Removed: Jogging, start of new job, other error.	Type in correct data or load correct job.
419	Search line in embedded subprogram	Requested search line is part of an embedded subprogram; Search can only be used to start in the main program.	Cannot restart a program within a subprogram. Restart program before it enters subprogram.
420	_ axis motor overheating	CNC10 estimates that a motor has reached the warning temperature (set in Parameter 29). Motor is overheating or the temperature file is corrupted. Job will be cancelled.	Contact dealer. Determine what’s causing motor to overheat or delete CNC10.tem file and reboot.
421	Motor(s) too hot: job canceled	CNC10 estimates that one or more motors have reached the limit temperature (set in Parameter 30). Will not be able to run until motor cools down.	Contact dealer. Determine what’s causing motor to overheat or delete CNC10.tem file and reboot.
422	Jog Panel Offline	Jog panel failure or loose cable.	Reconnect jog panel cable.
423	Jog Panel Online	Loose jog panel cable has been reconnected.
424	Feedrate Override Offline	Jog panel failure or loose cable. Jog panel and feedrate will not work.	Contact dealer
425	Feedrate Override Online	Loose jog panel cable has been reconnected.
426	Spindle Override Offline	Jog panel failure or loose cable. Jog panel and feedrate will not work.	Contact dealer
427	Spindle Override Online	Loose jog panel cable has been reconnected.
428	MPG Offline	MPG failure, loose cable, or was turned off.	Reconnect MPG cable and turn axis selector knob to an axis.
429	MPG Online	Loose MPG cable has been reconnected.
430	CPU7 PIC Offline	Power supply or hardware problem.	Contact dealer Motherboard or CPU10 problem.
431	CPU7 PIC Online	CPU10 is back on line.

Error	Message	Cause & Effect	Action
432	External PLC Offline	Koyo PLC Direct failure or loose cable.	Check serial cable, or optic232.
433	External PLC Online	PLC failure corrected.
434	_ idling too high: Releasing power	Axis is not moving and no job is running but axis has stopped against some abnormal resistance. Power is released to motors.	Run an autotune to adjust motor settings.
436	Servo drive shutdown	This error message is produced by hardware detection of a physical error. The servo drive hardware generates this error message if it detects either an overcurrent or overvoltage condition. The particular hardware condition is reflected on the servo drive LED’s. Once the servo drive detects this error condition it stops all motion and removes power to the motors. The hardware indicates the presence of this condition to the CNC10 software via the servo drive fault input to the PLC.	On DC systems check status of the servo drive LED’s and check fibers 4&5. If this message is displayed on an AC system check P178 bit 4 is set.
437	Servo power removed	Axis was moving more than 300 RPM while power was supposed to be off. 1.) Motor may be wired backwards. 2.) May be a shorted servo drive. 3.) Axis motion is canceled but motor continues to move due to inertia, which is probably caused by an unbalanced axis. Power to motors is released.	Check motor wiring, servo drive, or look at Kg value in PID and make sure it’s not above +/- 5.
438	Axis cannot keep up with spindle	During a slaved move the axis can not keep up to the spindle speed (i.e. rigid tapping) Job is cancelled.	1.) Check parameter 34 for wrong sign in front of encoder counts. 2.) Need to slow down spindle RPM’s.
439	_ axis servo drive data output error	Logic power failure or lost of communication from the drive to the CPU10.	Is logic LED on? Check fiber optic cables to drive. For SD1 drives, make sure bus cables are shielded and are as short as possible. Power unit down and check drive connections.
441	_ axis overvoltage	Input power has gone higher than 340VDC and will shutdown the drive and removes power. The motor brake will engage for 5 seconds in this condition.	Check input voltage is below 340VDC. If not, incoming VAC needs lowered.
442	_ axis undervoltage	Drive input power is less than 80 VDC.	Check supply voltage.

Error	Message	Cause & Effect	Action
443	_ axis commutation encoder bad	Control detected invalid commutation zone value.	Perform a motor Move Sync in the Drive menu. A Zero (0) or Seven (7) is an invalid zone. Check for: a.) Wiring problem in the encoder cable or motor end cap (broken encoder wires). b.) Encoder cable shield connected at motor end, when it shouldn’t be. c.) Bad encoder. d.) Motor power cable shields not connected. e.) Drive not grounded properly.
444	_ axis overtemperature detected	Drive overtemp sensor tripped. No motor power.	The drive is being run at over capacity or the cooling fan is either not functioning or its air flow is blocked.
445	_ axis overcurrent detected	Overcurrent detected on an axis. No motor power.	Try to jog the axis. The drive will reset the current limit and try to move the motor. If the error comes back, check for a short in the motor output.