C300 Redundancy-related notifications
Become Primary command – BECMPRICMD
R301.1 Experion C300 Controller User's Guide 203
11/06 Honeywell
Notification Description RDNSYNCSTATE
Optic Cable Î Secondary RM Î Secondary backplane Î
Secondary CPM.
In C300 Controllers:
Primary C300 Î Primary IOTA Î Private Path Cable Î
Secondary IOTA Î Secondary C300.
Sync Checksum Fail is detected by the secondary controller
which aborts synchronization and generates this alarm
notification. Detection of Sync Checksum Fail is severe in
that the redundant controller pair were allegedly
synchronized when redundancy tracked memory was found
to be different. In other words, switchover in the presence of
redundancy tracked memory differences may lead to bump
in control or loss of control (where the scope of the failure
varies on where and how the memory differed). Therefore,
by design, a Sync Checksum Fail occurrence disables auto
synchronization.
Hardware replacement is recommended upon Sync
Checksum Fail detection.
This notification returns to normal upon issuing the Enable
Sync or Alternate Sync commands.
Sync HW Failure Sync Hardware Failure is detected locally by the primary or
secondary controller which aborts synchronization and
generates this alarm notification. Detection of Sync
Hardware Failure is severe in that the redundant controller
pair could possibly repetitively synchronize and abort
synchronization continuously (unless 3 consecutive initial-
sync failures occur). Therefore, by design, a Sync Hardware
Failure occurrence disables auto synchronization.
Hardware replacement is recommended upon Sync
Hardware Failure detection.
This notification returns to normal upon issuing the Enable
Sync or Alternate Sync commands.
Standby Read description of Standby state.
Upon entering the Standby state, this diagnostic alarm
warns users of the potential switchover to the CEE Idle
state. This notification returns to normal upon exiting the
Standby state either due to controller redundancy switchover
or the Disable Sync command.
Unexpected Partner
on Redundany Link
Only the controller explicitly configured non-redundant
generates this alarm notification when a partner is present
on the redundancy private path. The RDNSYNCSTATE
parameter is set to either PARTNERVISBL or
PARTNERVISBL or
INCOMPATIBLE
To Next Page
Loading...
