Is the POWER LED on the
standby system power supply
module on?
On
Off
No
Has a stop error occurred
in the standby system CPU?
Yes
No
Has an error occurred
in the standby system
CC-Link IE controller
network module?
Yes
No
Is the tracking cable
disconnected?
Connect the tracking cable properly.
Yes
Refer to the troubleshooting in the following manual.
QnPRHCPU User's Manual
(Redundant System)
OFF (Enable)
Data-link-error-induced
system switching disable flag
(SB0017)
ON
(Disable)
End
QCPU User's Manual
(Hardware Design, Maintenance and
Inspection)
QCPU User's Manual
(Hardware Design, Maintenance
and Inspection)
Check the error details and take corrective actions.
Check the error details and take corrective actions.
No system switching occurs in Redundant
CPUs even though the CC-Link IE controller
network module cable is disconnected.
Supply power.
The power supply module hardware may be faulty.
Please consult your local Mitsubishi
representative.
Review the system configuration so that the total
current does not exceed the rated output current
of the power supply module.
Even if a data link error is detected, no system
switching request will be issued to the control
system CPU.
Set the Data-link-error-induced system switching
disable flag (SB0017) to OFF.
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