Mitsubishi MELSEC Q Series Programming Manual page 938

Error
Error Contents and Cause
Code
[MULTI-C.BUS ERR.]
1433
The communication error with other CPU is
detected in the Multiple CPU high speed bus.
■Collateral information
1434
• Common Information: Module No. (CPU No.)
• Individual Information:-
■Diagnostic Timing
1435
• Always
1436
[MULTI-C.BUS ERR.]
The error of the Multiple CPU high speed main
base unit is detected. (The error of the Multiple
CPU high speed bus is detected.)
■Collateral information
• Common Information:-
• Individual Information:-
1437
■Diagnostic Timing
• At power-on/At reset:
[MULTI-C.BUS ERR.]
An error of the multiple CPU high speed main base
unit was detected. (An error of the multiple CPU
high speed bus was detected.)
1439
■Collateral information
• Common Information:-
• Individual Information:-
■Diagnostic Timing
• At power-on/At reset:
[AC/DC DOWN]
• A momentary power supply interruption has
occurred.
• The power supply went off.
1500 ■Collateral information
• Common Information:-
• Individual Information:-
■Diagnostic Timing
• Always
[SINGLE PS. DOWN]
The power supply voltage of either of redundant
power supply modules on the redundant base unit
dropped.
1510 ■Collateral information
• Common Information: Base No./Power supply No.
• Individual Information:-
■Diagnostic Timing
• Always
[SINGLE PS. ERROR]
On the redundant base unit, the one damaged
redundant power supply module was detected.
■Collateral information
1520
• Common Information: Base No./Power supply No.
• Individual Information:-
■Diagnostic Timing
• Always
12-18
Corrective Action
• Take noise reduction measures.
• Check the main base unit mounting status of the
CPU module.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause is
a failure of the CPU module. (Please consult
your local Mitsubishi representative, explaining
a detailed description of the problem.)
Reset the CPU module and run it again. If the
same error code is displayed again, the cause is a
failure of the CPU module. (Please consult your
local Mitsubishi representative, explaining a
detailed description of the problem.)
• Take noise reduction measures.
• Check the main base unit mounting status of the
CPU module.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause is
a failure of the CPU module. (Please consult
your local Mitsubishi representative, explaining
a detailed description of the problem.)
Reset the CPU module and run it again. If the
same error code is displayed again, the cause is a
failure of the CPU module. (Please consult your
local Mitsubishi representative, explaining a
detailed description of the problem.)
Check the power supply.
Check the power supplied to the redundant power
supply modules mounted on the redundant base
unit.
The cause is a hardware failure of the redundant
power supply module. (Please consult your local
Mitsubishi representative, explaining a detailed
description of the problem.)
LED Status Corresponding
CPU Status CPU
RUN:
Off
ERR.:
*20
Flicker
QnU
CPU Status:
Stop
RUN:
On
ERR.:
QCPU
Off
LCPU
CPU Status:
Continue
*10
Qn(H)
*10
QnPH
QnPRH
RUN:
*17
QnU
On
ERR.:
On
CPU Status:
*10
Qn(H)
Continue
*10
QnPH
QnPRH
*17
QnU