Mitsubishi Electric Q26UD(E)HCPU User Manual page 315

Error
Error and cause
code
[MAIN CPU DOWN]
Runaway or failure of the CPU module
• Malfunction due to noise or other causes
• Hardware failure
1044
■Collateral information
• Common information: -
• Individual information: Failure information
■Diagnostic timing
• Always
[CPU UNIT DOWN]
(1) The module (built-in I/O or built-in CC-Link)
status differs from that obtained at power-on.
(2) Runaway or failure of the CPU module (built-
in I/O, built-in CC-Link)
• Malfunction due to noise or other causes
1045
• Hardware failure
■Collateral information
• Common information: -
• Individual information: Failure information
■Diagnostic timing
• Always
[RAM ERROR]
The sequence program storing program memory
in the CPU module is faulty.
■Collateral information
1101 • Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset/When an END instruction
executed
[RAM ERROR]
• The work area RAM in the CPU module is faulty.
• The standard RAM in the CPU module is faulty.
■Collateral information
• Common information: -
1102
• Individual information: -
■Diagnostic timing
• At power-on/At reset/When an END instruction
executed
[RAM ERROR]
The device memory in the CPU module is faulty.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset/When an END instruction
executed
[RAM ERROR]
1103
• The device memory in the CPU module is faulty.
• The device out of range is accessed due to
indexing, and the device for system is
overwritten.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset/When an END instruction
executed
[RAM ERROR]
The address RAM in the CPU module is faulty.
■Collateral information
1104 • Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
Corrective action
• 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.
• 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.
• 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.
• 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.
• Take noise reduction measures.
• When indexing is performed, check the
value of index register to see if it is within
the device range.
• 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.
• 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.
APPENDICES
LED status, Corresponding
CPU status CPU
RUN: Off
ERR.:Flashing
QnUDV
CPU Status:Stop
RUN: Off
ERR.:Flashing
LCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing QCPU
LCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing QCPU
LCPU
CPU Status:Stop
QCPU
LCPU
RUN: Off
ERR.:Flashing
CPU Status:Stop
Qn(H)
QnPH
QnPRH
RUN: Off Q00J/Q00/Q01
ERR.:Flashing Qn(H)
QnPH
CPU Status:Stop QnPRH
A
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