Mitsubishi Electronics QD75P, QD75D At start The system will not operate During operation

15 TROUBLESHOOTING

MELSEC-Q

Classification	Error	Error name		Error	Operation status at error occurrence
of errors	code
					At start: The system will not operate.
					During operation:
			The setting value of ABS direction in		The system decelerates to a
		Illegal setting of ABS	the unit of degree is as follows.		stop.
Positioning					(Note that, in the continuous
	546	direction in unit of	• Set outside the setting range.
operation
		degree	• A figure other than "0" is set when		positioning control and continuous
					path control, the system continues
			the software stroke limit is valid.		operating with the setting set at the
					time of start even if the setting is
					changed during the operation.)
					At start: The system will not operate.
					During operation:
					The system stops with the
			In the PLC CPU unit parameter		setting (deceleration
					stop/sudden stop) of the
	800	Hold error	"Output at error stop", the setting for		detailed parameter 2 sudden
			QD75 is "Hold".		stop selection
					(stop group 3).
					(Note that the deceleration stop only
					occurs during the manual pulse
					generator operation.)
	801	Flash ROM write	Data is not written to the flash ROM.
		error
					At start: The system will not operate.
	802	Flash ROM sum	While data is written to the flash
		check error	ROM, the power is turned OFF.
	803	PLC CPU error	The PLC CPU resulted in an error.
			• The ABRST	instruction is
			executed with the status set to		At start: The system will not operate.
			other than 0.
I/F			• The PSTRT	instruction is	During operation:
			executed with the start No. set to		The system stops with the
			other than 10 to 600, 7000 to 7004		setting (deceleration
			and 9001 to 9004.		stop/sudden stop) of the
	804	Dedicated instruction	• The TEACH	instruction is	detailed parameter 2 sudden
		error	executed with the teaching data		stop selection
			selection set to other than 0 and 1.		(stop group 3).
			• The TEACH	instruction is	(Note that the deceleration stop only
			executed with the positioning data		occurs during the manual pulse
			No. set to other than 1 to 600.		generator operation.)
			• The instruction of a non-existent
			axis is specified by the ABRST ,
			PSTRT or TEACH instruction.
		Flash ROM write	Data is written to the flash ROM
	805		continuously 25 times or more from
		number error			At start: The system will not operate.
			the sequence program.
	806	Dedicated instruction	Mismatching occurs between the
		I/F error	PLC CPU and QD75.

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