Mitsubishi Electric QJ71LP21 Reference Manual page 245

8 TROUBLESHOOTING
Error Code
Error Contents and Cause
*1
(SD0)
The sequence program storing built-in RAM/program
1101
memory in the CPU module is faulty.
1102 The work area RAM in the CPU module is faulty.
1103 The device memory in the CPU module is faulty.
1104 The address RAM in the CPU module is faulty.
The system RAM in the CPU module is faulty.
The CPU memory in the CPU module is faulty.
1105
The CPU shared memory in the CPU module is faulty.
The battery is dead.
1106
The program memory in the CPU module is faulty.
1107
The work area RAM in the CPU module is faulty.
1108
A fault was detected by the initial check of the tracking
1110
hardware.
1111 A tracking hardware fault was detected.
• A tracking hardware fault was detected during running.
1112
• 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.
• The error occurred at a startup since the redundant
1113
system startup procedure was not followed.
A fault was detected by the initial check of the tracking
1115
hardware.
• A tracking hardware fault was detected during running.
• The tracking cable was disconnected and reinserted
without the standby system being powered off or reset.
1116 • The tracking cable is not secured by the connector
fixing screws.
• The error occurred at a startup since the redundant
system startup procedure was not followed.
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being stored.
: This applies to the CPU of function version B or later.
*12
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Corrective Action
This suggests a CPU module hardware fault. (Contact
your nearest Mitsubishi representative.)
• Take noise reduction measures.
• Reset the CPU module and RUN it again.If the same
error is displayed again, this suggests a CPU module
hardware fault. (Contact your nearest Mitsubishi
representative.)
• Check the battery to see if it is dead or not. If dead,
replace the battery.
• Take noise reduction measures.
• Format the program memory, write all files to the PLC,
then reset the CPU module, and RUN it again.
If the same error is displayed again, the possible cause
is a CPU module hardware fault. (Contact your local
Mitsubishi representative, explaining a detailed
description of the problem.)
This suggests a CPU module hardware fault. (Contact
your nearest Mitsubishi representative.)
• Start after checking that the tracking cable is
connected.
If the same error is displayed again, the cause is the
hardware fault of the tracking cable or CPU module.
(Please contact your local nearest Mitsubishi or
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).
This suggests a CPU module hardware fault. (Contact
your nearest Mitsubishi representative.)
• Start after checking that the tracking cable is
connected.
If the same error is displayed again, the cause is the
hardware fault of the tracking cable or CPU module.
(Please contact your local nearest Mitsubishi or
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).
MELSEC-Q
Corresponding CPU
Q4AR
Q00J/Q00/Q01
*12
Qn(H)
QnPH
QnPRH
QnPRH
Qn(H)
QnPRH
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