Communication Manual

Chapter 2 │System integration 8
BACnet
Access from software version 4.0-1-05 is capable of communication via the BACnet-ASC
(Application Specific Controller) protocol and from 4.3-1-00 with BACnet AAC (Advanced
Application Controller).
In order to connect a Access application to a BMS (Building Management System) via BACnet/IP
use the TCP/IP port.
BACnet/IP configuration (Activation status of BACnet/IP protocol)
Upon delivery, the BACnet/IP protocol is disabled as a default. To enable BACnet communication,
simply change the setting “No” to “Yes”.
BACnet device name
This is the devices name that is shown on the BMS when a device is discovered.
BACnet device ID
The ID of a device, used to identify it on the BACnet network. This number cannot be duplicated
anywhere on the BACnet network and must therefore be unique.
BBMD address and BACnet/IP port number
The BBMD address (BACnet/IP Broadcast Management Device) is used for discovering devices that
are attached to different BACnet/IP subnets and separated by an IP router. The address is entered as
host:port, where “host” can be the host’s name if DNS is configured. If DNS is not configured, the
host address should be entered in the format “xxx.xxx.xxx.xxx”, followed by the port number (default
setting 47808).
Example: mybbmd:47808 (with DNS configured) or 10.100.50.99:47808
Note! When BBMD address is configured in Access, will make the Access controller to a BACnet/IP
Foreign Device, which then means that the Access will not answer any UDP broadcast in the net other
than from that particular BBMD. When assigning BBMD, some BBMD vendors mentions that not
only the Device ID must be unique but also the Device Name within the BACnet network. For further
information, please consult the specific BBMD vendors and/or BACnet routers literature.