Mitsubishi QJ71LP21 Reference Manual page 268

8 TROUBLESHOOTING
Error
Error
Code
Messages
*1
(SD0)
CONTROL-
1414
BUS. ERR.
CONTROL-
1415
BUS. ERR.
CONTROL-
1416
BUS. ERR.
CONTROL-
1417
BUS. ERR.
SYS. UNIT
1421
*3
DOWN
*1 Characters in parentheses ( ) indicate the special register numbers where individual information is being
:
stored.
*3 This can only be detected in redundant systems. Detection is possible in either the control system or the
:
standby system.
8 - 57
Common Individual
Information Information
(SD5 to 15) (SD16 to 26)
Unit No. ----
Base No. ----
Unit No. ----
---- ----
---- ----
LED Status Operating
Statuses
RUN ERROR
of CPU
Off Flicker Stop
Off Flicker Stop
Off Flicker Stop
Off Flicker Stop
Off Flicker Stop
MELSEC-Q
Diagnostic
Timing
When an END
instruction
executed.
When an END
instruction
executed.
At power ON/
At reset
Always
Always
8 - 57