This prestandard defines FLN-objects and FLN-services to be used on a field level for system neutral exchange of data for HVAC applications. This prestandard defines the semantics of the objects and the abstract services applicable to them and it defines an optional syntax to be used to exchange data with communication front-end unit. The syntax of the object data on the underlying communication (bus) protocol is not within the scope of this prestandard.
99.60 Withdrawal effective
Nov 27, 2007