What is BACnet

What is BACnet meaning is a communication standard that allows for data exchange (including complex data) between systems from various vendors

BACnet allows for interoperability of devices and systems from various vendors in BMS

BACnet is independent from any specific hardware, operating system or software platform

BACnet Networking Options

  • Ethernet
  • BACnet over IP
  • Serial (RS232/RS485)
  • MS/TP
  • LonTalk

Benefits of BAC-net

  • Single point of control
  • Competitive system expansion
  • Eliminate fear of being “locked in”
  • Possibility of integrating all BAC functions
  • Low cost
  • Interoperability

KNX or BACnet® components which allows direct network connection to the open 2-level system, rather than through a field controller or a gateway device.

BACnet is an acronym for Building Automation and Control Network. It was developed under the aegis of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) to provide an open system specifically designed for the requirements of BMSs. It is now formally defined in ANSI/ASHRAE standard 135-2004(1). BACnet focused on defining a method for communications for the functions commonly found in building automation. BACnet is administered by a standing committee and is designed as a high level protocol which may use a number of transmission protocols at the field bus level. Table 16 shows the organisation of BAC-net in terms of the OSI model; the commonly used media are in italic type

The BAC-net standard also defines standard profiles for BAC-net devices using BAC-net ‘interoperability building blocks’. These explicitly define the characteristics of a BA-Cnet device as required by the standard and are used by the manufacturer of the device in the protocol implementation conformance (PIC) statement to define which BAC-net objects (and propert-es), services and networks are supported.

In order to achieve BAC-net listing, manufacturers submit their equipment, along with the PIC statement to an authorised BAC-net testing laboratory where the performance is independently verified.

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