Mitsubishi Electronics manual 136

11 TROUBLESHOOTING

MELSEC-Q

Error Code				Corres-
		Error Contents and Cause	Corrective Action	ponding
(SD0)	1
				CPU
1000
1001
1002				QCPU
1003		Run mode suspended or failure of main CPU module	(1) Measure noise level.
1004		(1) Malfunctioning due to noise or other reason	(2) Reset and establish the RUN status again.
1005		(2) Hardware fault	If the same error is displayed again, this suggests a CPU	QCPU
			module hardware error. Contact your nearest Mitsubishi	Rem
1006			representative.
1007				QCPU
1008
1009		Failure of the power supply module, CPU module, main base unit,
		extension base unit or extension cable is detected.
1010		Entire program was executed without the execution of an END	(1) Measure noise level.
1011		instruction.
			(2) Reset and establish the RUN status again.
		(1) When the END instruction is executed it is read as another
			If the same error is displayed again, this suggests a CPU
		instruction code, e.g. due to noise.
1012			module hardware error. Contact your nearest Mitsubishi
		(2) The END instruction has been changed to another instruction
			representative.
		code somehow.
1101		Error in internal RAM/program memory where CPU module
		sequence program is stored.	This suggests a CPU module hardware error. Contact your nearest
1102		Error in RAM used as CPU module work area.
			Mitsubishi representative.
1103		Internal CPU module device error.
1104		RAM Address error in CPU module.
			(1) Measure noise level.	QCPU
			(2) Reset and establish the RUN status again.
				function
1105		CPU shared memory fault	If the same error is displayed again, this suggests a CPU
				Ver. B
			module hardware error. Contact your nearest Mitsubishi
				or later
			representative.
1200		The circuit that performs CPU internal index modification is not
		operating properly.	This suggests a CPU module hardware error. Contact your nearest
1201		Internal CPU module hardware (logic) does not operate normally.
			Mitsubishi representative.
1202		The circuit that executes sequence processing in the CPU module
		does not operate properly.
1203		The operation circuit that conducts index modification in the CPU
		module is not operating properly.
			This suggests a CPU module hardware error. Contact your nearest
1204		The hardware (logic) in the CPU us not operating properly.		Q4AR
1205		The operation circuit that conducts sequence processing in the CPU	Mitsubishi representative.
		in not operating properly.
1206		The DSP operation circuit in the CPU is not operating properly.
			(1) Check ERR. LED of the output modules and replace the module
			whose LED is lit.
			(2) Read the common error information with the peripheral device	QCPU
		There is an output module with a blown fuse.	and replace the fuse at the output module corresponding to the
			numerical value (module No.) reading.	Rem
			Alternatively, monitor special registers SD1300 to SD1331 with
			the peripheral device and change the fuse of the output module
			whose bit has a value of "1".
			(1) Check ERR. LED of the output modules and replace the fuse of
			the module whose LED is lit.
			(2) Read the common error information with the peripheral device	QnA
		There is an output module with a blown fuse.	and replace the fuse at the output module corresponding to the
1300			numerical value (module No.) reading.	Q4AR
			Alternatively, monitor special registers SD1300 to SD1331 with
			the peripheral device and change the fuse of the output module
			whose bit has a value of "1".
			(1) Check ERR. LED of the output modules and replace the module
			whose LED is lit.
			(2) Read the common error information with the peripheral device
		(1) There is an output module with a blown fuse.	and replace the fuse at the output module corresponding to the
			numerical value (module No.) reading.	Q2AS
		(2) External power supply for output load is turned off or
			Alternatively, monitor special registers SD1300 to SD1331 with
		disconnected.
			the peripheral device and change the fuse of the output module
			whose bit has a value of "1".
			(3) Check whether the external power supply for output load is ON
			or OFF.
1310		An interruption has occurred although there is no interrupt module.	One of the individual modules is experiencing hardware problems,
			so check the modules. Contact your nearest Mitsubishi
			representative and explain the problem with the defective module.

1 Characters in parentheses ( ) indicate the special register numbers where individual information is being stored.

11 - 20 11 - 20