Mitsubishi Electric Q26UD(E)HCPU User Manual page 325

Error
Error and cause
code
[CONTROL-BUS ERR.]
An error was detected on the system bus.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
1416
[CONTROL-BUS ERR.]
An error was detected on the system bus in the
multiple CPU system.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[CONTROL-BUS ERR.]
A reset signal error was detected on the system
bus.
■Collateral information
1417
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
[CONTROL-BUS ERR.]
• In the debug mode, both the main base unit for
system A and the main base unit for system B
are connected to an extension base unit.
• In the redundant system, the control system
cannot access the extension base unit because
1418
it has failed to acquire an access right.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-ON/At reset/At Switching execution
[MULTI-C.BUS ERR.]
The error of host CPU is detected in the multiple
CPU high speed transmission.
■Collateral information
1430
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[MULTI-C.BUS ERR.]
The communication error with other CPU is
detected in the multiple CPU high speed
transmission.
1431 ■Collateral information
• Common information: Module No. (CPU No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[MULTI-C.BUS ERR.]
The communication time out with other CPU is
detected in the multiple CPU high speed
transmission.
1432 ■Collateral information
• Common information: Module No. (CPU No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
Corrective action
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module, CPU module, or base unit. Please
consult your local Mitsubishi representative.
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module, CPU module, or base unit. Please
consult your local Mitsubishi representative.
• Check that both the main base unit for
system A and the main base unit for
system B are not connected to an
extension base unit in the debug mode.
• 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, Q6WRB, or extension cable.
Please consult your local Mitsubishi
representative.
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.
• 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 hardware failure of the CPU
module. Please consult your local
Mitsubishi representative.
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
Qn(H)
QnPH
QnU
RUN: Off
ERR.:Flashing
CPU Status:Stop
Q00CPU
Q01CPU
QnU
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnU
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnU
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnU
CPU Status:Stop
A
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