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Tuning Policy
It defines the rules for evaluating both write requests, which is to writable proxy
points, as well as the acceptable "freshness" of read requests that result from poll-
ing. It includes standard tuning policy properties and additional properties related
to client-side usage of the BACnet Subscribe COV service.
Note: If the controller supports COV, it is recommended to use this feature, it will
optimize the bandwidth of the controller. IRM NX controller supports up to 20
points for COV. Since there a is a limitation in the Niagara framework on the COV
feature, it is recommended to configure only up to 20 points and the rest of the
points for polling. IRM Bacnet Device comes with default IRM Tuning policy which
enables COV feature. Whenever you perform BACnet Network discover for IRM
BACnet device tool automatically create IRM Tuning Policy.
It is recommended to categories critical and less critical points, based on that you
can assign the policy to all the different points. So that the critical points can be
polled more frequently, and less critical points can be polled less frequently, this
configuration helps to optimize the bandwidth.
To assign a policy
Step 1.
Step 2.
Tuning Policy
Add points from the IRM point discovery manager.
While configuring the point, assign the tuning policy from the drop-down
list.
Fig 15. Adding IRM Tuning Policy
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