Communication protocols using in Building Automation and Intelligent Building, and their characteristics

Beginner's Guide to Building Automation Protocols.

BACnet Building Automation Control Network. a standard protocol recognized by domestically (ASHRAE/ANSI 135-2004), in Europe (CEN TC 247), and worldwide (ISO 16484-5)’ can be implemented on low-cost networks (dedicated or shared) extremely flexible in LAN types cost-competitive with long-standing proprietary devices completely open and not dependent on specific hardware. Applications for communication needs for BAC systems such as heating, ventilating, air-conditioning control.

BACnet Object. Total of 54 different standard object types relevant to the devices’ specific application and each object represents either physical and virtual information can be uniquely identified and accessed over a network in standardized way Example: Analog Input Object -> provide variable-type information from sensors like temperature sensors and relative humidity sensors to the automation station.

BACnet Properties. identifies 123 different Properties of Objects Property identifiers: numbers that uniquely identify a given property in the context of the Object type such as object identifier and status flags, reference a specific property of an object, have properties with identifiers such as "device name", "device location“.

BACnet Properties. Property Value: actual value of the property, It can be any data type, such as a string, integer, boolean.

BACnet Device. A group of colorful circles with white text Description automatically generated.

BACnet Service. client server 23 objectid=Analoglnput 29 propertyid=Present_Value) ReadPropertyAck(msg#123 29 propertyid=Present_VaIue value=72.O) or Error(msg#123 class—object code=NoSuchObject).

Data link and physical layers of BACnet data transmission.

BVLL concept for BACnet/IP - IP message tunneling.

BIBB (BACnet Interoperability Building Blocks). standardized features and functions that define BACnet devices' capabilities and requirements. interoperability between BACnet devices and systems from different manufacturers relies heavily on BIBBs. 1. DS-Data Sharing 2. AE-Alarm and Event Management 3. DM-Device Management 4. NM-Network Management 5. T-Trend 6. SCHED-Schedule.

BIBB (BACnet Interoperability Building Blocks). enables seamless integration permit diverse devices to seamlessly coexist and collaborate to deliver integrated yet vendor-neutral automation solutions..