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CPU MODULE4.
Self-diagnostics list
*1 Can be changed by the parameter settings of a peripheral device.
*2 Indicated as a three-digit trouble code only for errors with the CHK instruction.
Diagnostic Item Diagnostic Timing
CPU Mod-
ule Status
Status of
"RUN" LED
Error Message
Error Code
(D9008)
Memory error
Instruction code check Upon execution of each instruction
Stop Flickering
INSTRCT CODE ERR. 10
Parameter setting check
When power is ON or RESET
PARAMETER ERROR 11
No END instruction
When M9056 or M9057 is ON
MISSING END INS 12
Unable to execute instruction
Upon execution of each instruction
CAN'T EXECUTE(P) 13
Format (CHK instruction) check CHK FORMAT ERR. 14
Unable to execute instruction
When interruption occurrs
CAN'T EXECUTE(I) 15
CPU error
RAM check
When power is ON or RESET
When M9084 is ON during STOP
STOP Flickering
RAM ERROR 20
Operation circuit check
When power is ON or RESET
OPE.CIRCUIT ERR. 21
Watchdog error supervision
Upon execution of END instruction
WDT ERROR 22
END instruction not executed Upon execution of END instruction END NOT EXECUTE 24
Main CPU check Always MAIN CPU DOWN 26
I/O error
Module verify error
*1 (Default: stop)
Upon execution of END instruction
(However, not checked when M9084 is
ON.)
STOP/RUN
Flickering/
ON
UNIT VERIFY ERR. 31
Fuse blown
*1 (Default: stop)
Upon execution of END instruction
(However, not checked when M9084 is
ON.)
FUSE BREAK OFF 32
Special function module error
Control bus check Upon execution of FROM, TO instruction
STOP Flickering
CONTROL-BUS ERR. 40
Special function module error Upon execution of FROM, TO instruction SP.UNIT DOWN 41
Link module error
When power is ON or RESET
LINK UNIT ERROR 42
I/O interrupt error When interruption occurs I/O INT.ERROR 43
Special function module
assignment error
When power is ON or RESET
SP.UNIT LAY.ERR. 44
Special module access error
*1 (Default: stop)
Upon execution of FROM, TO instruction STOP/RUN
Flickering/
ON
SP.UNIT ERROR 46
Link parameter error
When power is ON or RESET
RUN ON LINK PARA.ERROR 47
Battery
Low battery
Always
(However, not checked when M9084 is
ON.)
RUN ON BATTERY ERROR 70
Operation error
*1 (Default: stop)
Upon execution of each instruction STOP/RUN
Flickering/
ON
OPERATION ERROR
*2
[ CHK ERROR ]
50
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
CJ SCJ JMP CALL(P) FOR to NEXT
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
When switching from (STOP, PAUSE)
to (RUN)
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