Mitsubishi Electric QJ71LP21 Reference Manual page 278

8 TROUBLESHOOTING
Error Code
Error Messages
*1
(SD0)
4000
4001
INSTRCT. CODE
ERR
4002
4003
4004
4010 MISSING END INS.
4020
CAN'T SET(P)
4021
4030 CAN'T SET(I)
4100
4101
OPERATION
ERROR
4102
4103
4104
*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.)
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Table8.2 Error code
Common Information Individual Information
(SD5 to 15) (SD16 to 26)
Program error location
Program error location
Program error location
Program error location
Program error location
LED Status
RUN ERROR
---- Off Flicker
---- Off Flicker
---- Off Flicker
---- Off Flicker
Off/ Flicker/
----
On On
MELSEC-Q
Operating
Statuses of Diagnostic Timing
CPU
Stop
At power ON/At
reset/STOP RUN
Stop
Stop
Stop
When instruction
*2
Stop/Continue
executed.
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