Inhibit Sync Reason - Rdninhibitsync - Honeywell Experion C300 User Manual

Reconnection of the redundancy cable.
•
Secondary module recovery from dual-FTE-cable disconnect
•
Secondary module powerup
•
Secondary module reboot into Backup state following firmware update.
•
Secondary module reboot into Backup state following recovery from the Fail state.
•
Auto synchronization retries
Once the Auto Sync State is enabled, loss of synchronization is automatically followed
by an automatic attempt to re-synchronize the redundant controller pair. However, after
a maximum of 3 initial-sync failures, the Auto Sync State is disabled with an inhibit sync
reason of Initial Sync Fail.
Inhibit Sync Reason – RDNINHIBITSYNC
Whenever the C300 is not in the synchronized/standby states and initial-sync is not in
progress, the RDNINHIBITSYNC parameter is set to the inhibit sync reason. Reasons
for inhibiting initial-sync include the following:
Inhibit Sync Reason
Startup In Progress
Auto Sync State
Dropping Sync
Initial Sync Delay
Initial Sync Fail
Redundancy
Configuration State
R301.1
11/06
Initial sync is not allowed until after the C300 has completed system
startup. This is a transient inhibit sync reason that is usually not
seen.
Initial sync is inhibited while the Auto Sync State is set to disabled.
This is a persistent inhibit sync reason that is canceled via the
Enable Sync command.
Initial-sync cannot commence until the previous abort sync
operation has been completed. This is a transient inhibit sync
reason that is usually not seen.
There is a guaranteed 20 second delay in between initial-sync
attempts. More specifically, for 20 seconds after a compatible
partner is identified, initial-sync is inhibited with this transient
reason.
After 3 failed attempts to perform initial-sync, the Auto Sync State is
automatically set to disabled and the inhibit sync reason is set to
this persistent value. Refer to the redundancy history for the
reasons why initial-sync failed, and issue the Enable Sync
command to attempt initial-sync again.
Initial-sync is not allowed when explicitly configured as non-
redundant. This persistent inhibit sync reason can only be canceled
Experion C300 Controller User's Guide
Honeywell
Redundancy parameters
Inhibit Sync Reason – RDNINHIBITSYNC
Description
195