Mitsubishi QJ71BR11 - Page 326

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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
4120
OPERATION
ERROR
Program error
location
----
Off/
On
Flicker/
On
Stop/
Continue
*2
When
instruction
executed.
4121
4130
OPERATION
ERROR
Program error
location
----
Off/
On
Flicker/
On
Stop/
Continue
*2
When END/
other
instruction
executed