Is there any literature where I can get more information on how BACnet objects, properties, and services are handled in Haystack native semantic modeling?

Typically you just model the data as pure Haystack using curVal, curStatus, etc and all the normal marker tags to define what the point measures and controls.

In Haxall we standardize the addressing of external data (BACnet, Modbus, OPC, etc) via a set of tags using the naming convention "bacnetCur", "bacnetWrite", and "bacnetHis". Its not part of Haystack per se though, but you can see docs here.

Hi Brian, When I said BACnet properties, was referring to Status_Flag, Event_State, Out of Service, Property list, Current_Command_Priority, etc.

We defined these properties for each and every point parameter. Have we come up with tags for it?

Do we have an example, how it is structured?

Note that I dont have access to skyfoundry so not able to check the docs which you have suggested..

When I said BACnet properties, was referring to Status_Flag, Event_State, Out of Service, Property list, Current_Command_Priority, etc.

I don't know if anyone has tried to standardize those. Their was an ASHRAE working group that talked about it many years ago

Note that I dont have access to skyfoundry so not able to check the docs which you have suggested..

Those are public, open source docs on https://haxall.io/

Brian - For BACnet doc, information is available on the connectors and I don't have access to it. Will you be able to help me out?

https://skyfoundry.com/doc/lib-bacnet/doc