Mitsubishi QJ71LP21-25 - Page 320

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MELSEC-Q
8 TROUBLESHOOTING
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
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
4000
INSTRCT.
CODE ERR
Program error
location
---- Off Flicker Stop
At power ON/
At reset/
STOP RUN
4001
4002
4003
4004
4010
MISSING
END INS.
Program error
location
---- Off Flicker Stop
4020
CAN'T SET(P)
Program error
location
---- Off Flicker Stop
4021
4030 CAN'T SET(I)
Program error
location
---- Off Flicker Stop