7.4.- BACnet PROTOCOL
BACnet is a communications protocol for Building Automation and Control NETworks. This protocol
replaces the proprietary communications of each device, making it a set of common communication
rules that enables the complete integration of the building automation and control devices of different
manufacturers.
The device features BACNet MS/TP communications, following the specifications of ANSI/ASHRAE
135 (ISO 16484-5).
Using a RS485 connection, the device can connect to a BACnet and include all of the objects and
services defined in the attached PICS map (Protocol Implementation Conformance Statement). ( “7.4.1.
PICS MAP”)
The default speed is 9600 bps and the MAC is 2 (node number), and can be changed on the
configuration screen or by entering the BaudRate and MAC_Address variables. The identifier (Device_
ID) can be changed on the configuration screen using the writing property over the variable or through
the Device_ID variable.
Another option is to overwrite the Object_Name in the Device object:
a) #Baud x – where x can be: 9600, 19200
b) #MAC x – where x can be: 0 ... 127
c) #ID x – where x can be: 0 ... 999999
For further information on the protocol: www.bacnet.org.
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Instruction Manual
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