Mitsubishi MELSEC L Series User Manual page 139

Error
Error Contents and Cause
Code
[TRK. CIR. ERROR]
• A tracking hardware fault was detected during
running.
• The tracking cable was disconnected and
reinserted without the standby system being
powered off or reset.
• The tracking cable is not secured by the
connector fixing screws.
1116
• The error occurred at a startup since the
redundant system startup procedure was not
followed.
■Collateral information
• Common Information:-
• Individual Information:-
■Diagnostic Timing
• During running
[RAM ERROR]
The memory of the CPU module in the Multiple
CPU high speed transmission area is faulty.
■Collateral information
1150
• Common Information:-
• Individual Information:-
■Diagnostic Timing
• At power-on/At reset
[RAM ERROR]
The program memory in the CPU module is
overwritten.
■Collateral information
1160
• Common Information:Program error location
• Individual Information:-
■Diagnostic Timing
• At program execution
[RAM ERROR]
The data of the device memory built in the CPU
module is overwritten.
■Collateral information
1161
• Common Information:Program error location
• Individual Information:-
■Diagnostic Timing
• Always
[RAM ERROR]
Data in the program memory of the CPU module
were overwritten.
■Collateral information
1163
• Common Information:-
• Individual Information:-
■Diagnostic Timing
• When instruction executed
Corrective Action
• Start after checking that the tracking cable is
connected. If the same error code is displayed
again, the cause is a hardware failure of the
tracking cable or CPU module. (Please consult
your local Mitsubishi representative, explaining
a detailed description of the problem.)
• Confirm the redundant system startup
procedure, and execute a startup again. For
details, refer to the QnPRHCPU User's Manual
(Redundant System).
• Take noise reduction measures.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause is
a hardware failure of the CPU module. (Please
consult your local Mitsubishi representative,
explaining a detailed description of the
problem.)
• Take noise reduction measures.
• Format the program memory, write all files to the
CPU module, and run it again.
If the same error code is displayed again, the
*27
cause is a hardware failure of the CPU module.
(Please consult your local Mitsubishi
representative, explaining a detailed description
of the problem.)
Take noise reduction measures.
If the same error code is displayed again, the
cause is a hardware failure of the CPU module.
*27
(Please consult your local Mitsubishi
representative, explaining a detailed description of
the problem.)
• Take noise reduction measures.
• For GX Works2, select "Transfer cache memory
to program memory" in the Options dialog box.
For GX Developer, select "Online change T/C
setting value change program memory transfer
settings" in the Options dialog box.
• Format the program memory, write all files to the
CPU module, and run it again.
If the same error code is displayed again, the
cause is a hardware failure of the CPU module.
(Please consult your local Mitsubishi
representative, explaining a detailed description
of the problem.)
APPENDICES
LED Status Corresponding
CPU Status CPU
QnPRH
*20
QnU
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
QnU
LCPU
QnU
LCPU
137
A