Mitsubishi QJ71BR11 - Page 268

8 - 57 8 - 57
MELSEC-Q
8 TROUBLESHOOTING
*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.
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
1414
CONTROL-
BUS. ERR.
Unit No. ---- Off Flicker Stop
When an END
instruction
executed.
1415
CONTROL-
BUS. ERR.
Base No. ---- Off Flicker Stop
When an END
instruction
executed.
1416
CONTROL-
BUS. ERR.
Unit No. ---- Off Flicker Stop
At power ON/
At reset
1417
CONTROL-
BUS. ERR.
---- ---- Off Flicker Stop Always
1421
SYS. UNIT
DOWN
*3
---- ---- Off Flicker Stop Always