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APPENDICES
A
Appendix 1 Error Codes
Appendix 1.3 List of error codes (1000 to 1999)
1416
[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
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.
RUN: Off
ERR.:Flashing
CPU Status:Stop
Qn(H)
QnPH
QnU
[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
Q00CPU
Q01CPU
QnU
1417
[CONTROL-BUS ERR.]
A reset signal error was detected on the system
bus.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
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.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnPRH
1418
[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
it has failed to acquire an access right.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-ON/At reset/At Switching execution
• 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, Q6WRB, or extension cable.
Please consult your local Mitsubishi
representative.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnPRH
1430
[MULTI-C.BUS ERR.]
The error of host CPU is detected in the multiple
CPU high speed transmission.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
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.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnU
1431
[MUL
TI-C.BUS ERR.]
The communication error with other CPU is
detected in the multiple CPU high speed
transmission.
■Collateral information
• Common information: Module No. (CPU No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
• 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.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnU
1432
[MULTI-C.BUS ERR.]
The communication time out with other CPU is
detected in the multiple CPU high speed
transmission.
■Collateral information
• Common information: Module No. (CPU No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
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.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnU
Error
code
Error and cause Corrective action
LED status,
CPU status
Corresponding
CPU
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