C300 Redundancy-related notifications
Redundancy Link Status – RDNLINKFAILED
204 Experion C300 Controller User's Guide R301.1
Honeywell 11/06
Notification Description RDNSYNCSTATE
INCOMPATIBLE. This notification returns to normal if the
controller is reconfigured as redundant or if the partner is
removed from the redundancy link. For example, this
notification is generated when the redundancy cable of a
loaded, non-redundant C300 is connected to another C300.
This notification is also be generated when a partner Series
C FIM module is added to a redundant IOTA when the
existing Series C FIM is explicitly configured as non-
redundant.
Redundancy Link Status – RDNLINKFAILED
The RDNLINKFAILED parameter is set ON when the redundancy cable is disconnected
and/or partner is not running. Once the redundancy cable is reconnected to a running
partner, the RDNLINKFAILED parameter is set OFF. Note that this parameter reflects
the physical status of the cable (connected vs. disconnected) and in no way indicates if
the redundancy cable is connected to a compatible partner. The ‘Redundancy Link
Inactive’ and ‘Redundancy Link Active’ notifications are generated when the
RDNLINKFAILED parameter is set ON and OFF, respectively.
OPM Status – RDNOPMSTATUS
The primary controller updates the On-Process Migration (OPM) Status parameter with
an enumeration representing the OPMSTEP/OPMWARN/OPMFAIL notifications
generated during an On-Process Migration session. The Controller Migration Wizard
uses this parameter to detect controller OPM session abnormal termination. Table 15
lists the OPM-related notifications along with their descriptions and the associated text
string of the OPM Status parameter.
Table 15 OPM-Related Notifications
Notification Description
RDNOPMSTATUS
Parameter
OPM (1) Enabled This notification is generated by the primary controller when
the Controller Migration Wizard starts a controller On-
Process Migration session.
Enabled
OPM (2) Blocks
Created
A secondary checkpoint restore is performed by the
Controller Migration Wizard to instantiate the control strategy
on the secondary controller during an OPM session. Upon
completion of secondary checkpoint restore, the primary
controller generates this notification.
BlocksCreated
OPM (3) Initial Sync This notification is generated by the primary controller when
the Migration Wizard commands the controller to commence
InitialSync
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