Mitsubishi Electronics QJ71C24/-R2, QJ71C24N, SH-080007 manual 273

10 TROUBLESHOOTING

MELSEC-Q

Error code								Protocol
	Error			Signal				Non
(Hexa-			Error Contents			Corrective action			Bidire-
				name			MC	Proce-
decimal)									ctional
								dure
7FC9H
to	System error		• The OS of the Q series C24 detected some error.		(	1)
7FCFH
7FE6H			• Remote passwords do not match.		• Check the remote password and
						communicate again.
					• A remote password processing
			• The remote password is not registered.			command is not necessary
			• The remote password processing command was			when a remote password is not
						registered.
			received on the interface side where the modem
				CHn	• Perform a remote password
7FE7H			function is not used.
	Processing			ERR.		unlock processing through GX
			• The GX Developer connection is selected in the
	disabled					Developer. Alternatively, change
			communication protocol setting on the
						the communication protocol
			corresponding CH.			setting of the corresponding CH
						to the MC protocol.
			• The number of remote password disagreements	CHn	• Clear the storage area of the
						cumulative number of abnormal
7FE8H			exceeded the value designated at the address
				ERR.		completions of unlock processing
			200D H.
						(address: 22FCH) to 0.
			• There is an error in the switch setting by the GX	CHn	• Write CPU to the parameter and
7FEFH	Switch setting error					reboot after correcting the
			Developer	ERR.		setting value for the switch.
	Dedicated
7FF0H	instructions		• Executed dedicated instructions simultaneously.		• Do not use dedicated
	simultaneous					instructions simultaneously.
	execution error
7FF1H	Control data error		• Setting value is incorrect.		• Correct the setting value in the
			• Setting value is out of range.			control data.
	Communication		• Instruction cannot be executed with the current		• Correct the setting value of the
7FF2H	protocol setting			
			communication protocol.			communication protocol.
	error
7FF3H
to	System error		• The OS of the Q series C24 detected some error.	—	(	1)
7FF4H
	Processing
	canceled due to		• The processing was canceled due to mode		• Do not execute mode
	mode
7FF5H			switching or receive data clear executed during the			switching/receive data clear
	switching/transmiss
			processing.			during any processing.
	ion sequence
	initialization
					• Multiple external devices must
7FF7H	Simultaneous		• Multiple external devices accessed a remote station			not access a remote station on
	access error		on the same network at the same time.			the same network at the same
						time.
7FF8H	System error		• The OS of the Q series C24 detected some error.	—	(	1)
7FFFH
B000H					• Take corrective action by
						referring to the CC-Link
to		•	Errors detected by the CC-Link module	—
						Master/Local Module User's
BFFFH
						Manual.
C000H					• Take corrective action by
to		•	Errors detected by the Ethernet module	—		referring to the Ethernet
CFFFH						Interface Module User's Manual.
F000H					• Take corrective action by referring
			• Errors detected by the MELSECNET/H,			to MELSECNET/H,
to				
			MELSECNET/10 network system			MELSECNET/10 network system
FFFFH
						reference manual.

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