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MELSEC-Q
11 TROUBLESHOOTING
11.3.2 Error Code List
The following information deals with error codes and the meanings, causes, and corrective
measures of error messages.
"
" in the Corresponding CPU column indicates that the error is applied to all types of CPU
modules. "Rem" indicates compatibility with the remote I/O module. A CPU type name in the
column indicates that the error is applied only to the specific CPU module type.
LED Status
Error Code
(SD0) 1
Error Messages
Common
Information
(SD5 to 15)
1
Individual
Information
(SD16 to 26)
1
RUN ERROR
Operating
Statuses of
CPU
Diagnostic Timing
1000 Off Flicker/On Stop Always
1001
1002
1003
1004
1005
1006
1007
1008
1009
MAIN CPU DOWN ——— ———
Off Flicker Stop Always
1010
1011
1012
END NOT EXECUTE ——— ——— Off Flicker Stop
When an END instruction is
executed.
1101
1102
1103
1104
1105
RAM ERROR ——— ——— Off Flicker Stop At power ON/At reset
1200
1201
1202
At power ON/At reset
1203
1204
1205
When END instruction executed.
1206
OPE. CIRCUIT ERR. ——— ——— Off Flicker Stop
When instruction executed.
1300 FUSE BREAK OFF Unit/moule No. ——— Off/ON Flicker/On
Stop/
Continue
2
When an END instruction is
executed.
1310 I/O INT ERROR Unit/module No. ——— Off Flicker Stop During interrupt
1 Characters in parentheses ( ) indicate the special register numbers where individual information is being stored.
2 The CPU MODULE operation status when an error occurs can be set at the parameters. (LED display will change accordingly.)