RFC 4072R
16 / 128
PHOENIX CONTACT
110146_en_00
3.2.5.4
SD card of the PRIMARY controller removed during runtime
If you remove the SD card of the PRIMARY controller during runtime, while the redundant
control system is in the “Sync/HSBY” state, the PRIMARY controller will be restarted auto
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matically. The PRIMARY controller cannot be initialized successfully if an SD card is not in
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serted. The roles are switched over: The BACKUP controller becomes the PRIMARY con
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troller and switches to the “No Sync” state.
3.2.5.5
SD card of the BACKUP controller removed during runtime
If you remove the SD card of the BACKUP controller during runtime, the BACKUP controller
will be restarted automatically. The BACKUP controller cannot be initialized successfully if
an SD card is not inserted. The PRIMARY controller switches to the “No Sync” state.
3.2.5.6
No connection
If there is no synchronization connection via the SYNC interface and also no connection via
Ethernet interface LAN1, both controllers switch to the “No Sync” state.
3.2.5.7
Missing remote controller
One of the controllers initialized successfully. The second controller is missing or is not yet
fully initialized. The controller that is already initialized switches to the “No Sync” state.
3.2.6
“SingleMode” redundancy status: Cause
Both controllers have the redundancy type “None”. The redundant control system is in the
“SingleMode” state. The redundancy functionality is deactivated.