Mitsubishi Electric Q02CPU-A - Page 58

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CPU MODULE4.
Self-diagnostics list (continued)
*1 Can be changed by the parameter settings of the peripheral devices.
*2 Displayed as a three-digit trouble code only for errors with the "CHK" instruction.
Diagnostic Item Diagnostic Timing
CPU Module
Status
Status of
RUN LED
Error Message
Error Code
(D9008)
CPU error
RAM check
• When switching on or resetting
• When M9084 is on during STOP
• When END instruction is executed
Stop Flickering
RAM ERROR 20
Operation circuit check • When switching on or resetting OPE.CIRCUIT ERR. 21
Watchdog error supervision • When END instruction is executed WDT ERROR 22
END instruction not executed • When END instruction is executed END NOT EXECUTE 24
Main CPU check Always MAIN CPU DOWN 26, 60, 61
Memory card error
• When END instruction is executed
• When power is on
MEMORY CARD ERR. 16
I/O error
Module verify error
*1 (Default: stop)
When END instruction is executed
(However, not checked when M9084 is on.)
Stop/Run
Flickering/
On
UNIT VERIFY ERR. 31
Fuse blown
*1 (Default: stop)
When END instruction is executed
(However, not checked when M9084 is on.)
FUSE BREAK OFF 32
Special function module error
Control bus check
When FROM/TO instruction are executed
and bus error occurs
Stop Flickering
CONTROL-BUS ERR. 40
Special function module error When FROM/TO instruction are executed SP.UNIT DOWN 41
Link module error
• When switching on or resetting
•
LINK UNIT ERROR 42
I/O interrupt error When interruption occurs I/O INT.ERROR 43
Special function module
assignment error
• When switching on or resetting
•
SP.UNIT LAY.ERR. 44
Special module access error
*1 (Default: STOP)
When FROM/TO instruction are executed Stop/Run
Flickering/
On
SP.UNIT ERROR 46
Link parameter error
• When switching on or resetting
•
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: RUN) When each instruction is executed Stop/Run
Flickering/
On
OPERATION ERROR
*2
[<CHK> ERROR ]
50
When switching from (STOP, PAUSE) to
(RUN, STEP RUN)
When switching from (STOP, PAUSE) to
(RUN, STEP RUN)
When switching from (STOP, PAUSE) to
(RUN, STEP RUN)