Honeywell Experion C300 User Manual page 222

C300 Redundancy-related notifications
OPM Status – RDNOPMSTATUS
Notification
commence initial-sync. This notification represents
abnormal OPM session termination.
OPM I/O Data The primary controller generates this notification that
Failure indicates a loss-of-sync occurrence while transferring I/O
connection data (as part of initial-sync during an OPM
session). Although any loss-of-sync triggers this behavior,
the most probable loss-of-sync cause is the inability of the
secondary controller to interpret the I/O connection data
format. The secondary controller block's LASTOPMNAME
parameter is blank in this case. This notification represents
abnormal OPM session termination.
Note that this applies to both C200 and C300 Controllers
because they both transfer Series A I/O Connection data
during OPM initial-sync.
OPM I/O Conns Indicates a loss-of-sync occurrence while waiting for the
Timeout
secondary controller to form at least the same number of I/O
connections as the primary controller (as part of initial-sync
during an OPM session). Notification is generated by the
primary controller and sets the RDNOPMSTATUS
parameter to IoConnsTimeout. The secondary controller
block's LASTOPMNAME parameter is blank. This
notification represents abnormal OPM session termination.
This only applies to C200 controllers because it forms
connections directly with the Series A I/O. As with the C300,
connections are formed between the FTEB and Series A
I/O.
OPM Peer Refs Indicates a loss-of-sync occurrence while transferring peer
Mismatch cross-reference ID data (as part of initial-sync during an
OPM session). The primary controller generates this
notification. Although any loss-of-sync triggers this
behavior, the most probable loss-of-sync cause is the
presence of a ghost peer connection reference. A ghost
peer connection reference exists if the primary controller has
knowledge of a peer connection ID that was not instantiated
in the secondary controller during OPM secondary
checkpoint restore. The secondary controller block's
LASTOPMNAME parameter is blank. This notification
represents abnormal OPM session termination.
OPM Peer Refs The one-time OPM initial-sync transfer of dynamic data that
Failure occurs with control frozen contains two components: peer
dynamic data and block dynamic data, with the latter
typically being the larger of the two. A loss-of-sync
occurrence while transferring peer dynamic data causes the
primary controller to generate this notification and to set the
RDNOPMSTATUS parameter to PeerRefsFailure. Although
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Description
Experion C300 Controller User's Guide
Honeywell
RDNOPMSTATUS
Parameter
IoDataFailure
IoConnsTimeout
PeerRefsMismatch
PeerRefsFailure
R301.1
11/06