dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorLibraries and solutionsdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorBACnet-BCdl-breadcrumb-item__separatorPLC as BACnet Building Controller (B-BC)dl-breadcrumb-item__separatorSupported BIBBs and services
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Supported BIBBs and servicesdl-permalink__symbolPermalink

While objects and properties describe which data are communicated, the communication itself is done with services between clients and servers. A certain service can only be executed if client and server have the related BIBBs. The Fig. 314 BACnet objects, properties, services and BIBBs shows a simple “Service Read Property” which is possible because the client on the right supports DS-RP-A and the server on the left supports DS-RP-B. The service is executed in two steps:

  1. The client initiates a confirmed request “Read Property”, asking for the present value of the “Analog Input” of object with “ID 1010”.

  2. The server answers with an acknowledge, sending the present value which is 21,89°C in the example.

A list of all supported BIBBs and services of the PLC is given in the Automation Builder pdf document ABB-B-BC-PICS-AC500_V3.pdf. Help/Project examples/Examples.