Mitsubishi QJ71LP21-25 - Page 330

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MELSEC-Q
8 TROUBLESHOOTING
*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.)
Error
Code
(SD0)
*1
Error
Messages
Common
Information
(SD5 to 15)
Individual
Information
(SD16 to 26)
LED Status Operating
Statuses
of CPU
Diagnostic
Timing
RUN ERROR
4230
INST.
FORMAT
ERR.
Program error
location
---- Off Flicker Stop
When
instruction
executed.
4231
4235
4300
EXTEND
INST. ERR.
Program error
location
----
Off/
On
Flicker/
On
Stop/
Continue
*2
When
instruction
executed.
4301
4400
SFCP. CODE
ERROR
Program error
location
---- Off Flicker Stop STOP RUN
4410
CAN'T
SET(BL)
Program error
location
---- Off Flicker Stop STOP RUN
4411
4420 CAN'T SET(S)
Program error
location
---- Off Flicker Stop STOP RUN