Synchronization states
Redundancy compatibility parameter - RDNCMPT
R301.1 Experion C300 Controller User's Guide 191
11/06 Honeywell
RDNCMPT
Parameter
State Decription
MAJREVISION Incompatible The partner’s Major revision is not supported.
MINREVISION Incompatible The partner’s Minor revision is not supported.
PLATFORM Incompatible Mismatched compatibility types (i.e. different platform
firmware).
OPMNOTIMPL Incompatible Incompatible indication for those platforms sensitive to
difference in firmware versions when firmware versions
differ and the platform does not support OPM (there are
no known examples of this platform type).
OPMSEQUENCE Incompatible Attempting to migrate across more than one major
release. For example, migration between R101 and
R300 is not allowed.
NodeNumber Incompatible Device Indexes of potential redundant partner modules
are not properly configured as consecutive odd/even
pair.
HardwareType Incompatible Mismatched factory data (i.e. different platform
hardware).
FirmwareType Incompatible Mismatched compatibility types (i.e. different platform
firmware).
MessageFmt Incompatible The partner compatibility message format is undefined
or not supported.
PartnBootFmw Incompatible The partner module is executing from boot firmware
(e.g. partner is in the Alive, Ready, or Fail State). To
be compatible, both partners must be executing from
application firmware.
Synchronization states
The RDNSYNCSTATE parameter indicates the controller’s synchronization state.
Given a redundant controller pair, synchronization is the act of transferring configuration
and execution data from the primary controller to the secondary so that the secondary has
the same information as the primary when it is needed to transition into the primary role.
Synchronization is only possible for a compatible redundant controller pair; when a
compatible partner is found, the controller transitions from the ‘No Partner State’ to the
‘Partner Visible State.’ Initial-sync is the act of performing first time transfer of
synchronization data; during this time the controllers are in the ‘Sync in Progress’ State.
The redundant controller pair enters the ‘Synchronization Maintenance State’ upon
initial-sync completion. While in the Synchronization Maintenance State, the secondary
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