Mitsubishi Melsec-Q Series User Manual page 365

Error
Error Contents and Cause
Code
[RAM ERROR]
The destruction of the data stored in the standard
RAM is detected.
■Collateral information
1164
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[OPE. CIRCUIT ERR.]
The operation circuit for index modification in the
CPU module does not operate normally.
■Collateral information
1200
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• At power ON/ At reset
[OPE. CIRCUIT ERR.]
The hardware (logic) in the CPU module does not
operate normally.
■Collateral information
1201
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• At power ON/ At reset
[OPE. CIRCUIT ERR.]
The operation circuit for sequence processing in
the CPU module does not operate normally.
■Collateral information
1202
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• At power ON/ At reset
[OPE. CIRCUIT ERR.]
The operation circuit for index modification in the
CPU module does not operate normally.
■Collateral information
1203
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• When an END instruction executed
[OPE. CIRCUIT ERR.]
The hardware (logic) in the CPU module does not
operate normally.
■Collateral information
1204
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• When an END instruction executed
[OPE. CIRCUIT ERR.]
The operation circuit for sequence processing in
the CPU module does not operate normally.
■Collateral information
1205
• Common Information:–
• Individual Information:–
■Diagnostic Timing
• When an END instruction executed
*11 The Q10UD(E)HCPU, Q13UD(E)HCPU, Q20UD(E)HCPU, .Q26UD(E)HCPU only.
Corrective Action
• Take noise reduction measures.
If the same error is displayed again, the CPU
module has hardware failure. Contact your local
Mitsubishi representative, explaining a detailed
description of the problem.
This suggests a CPU module hardware fault. (Con-
tact your local Mitsubishi representative.)
CHAPTER12 TROUBLESHOOTING
LED Status Corresponding
CPU Status CPU
*11
QnU
QCPU
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
QnPRH
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