VAV T4 RT VAV Zone Controller
BACnet Communication Module User Guide
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BACnet Properties Configuration
To establish communication on the network, and guarantee a unique ID of devices in a BACnet system, the following
properties may have to be configured.
Table 1 - BACnet Properties Configuration
Property
Default Value
Configuration
MAC Address
000
Set to a unique address on the network between 000 and 254.
The value can be set manually via the menu.
The value can be set manually through the
WriteProperty
service to
Device Object.proprietary-property#1000 MSTP-Address
.
The values from 128-254 represent MS/TP non-token passing slave
devices.
Device Instance
Auto
The controller automatically configures its device instance to 877,000 +
MAC address.
The value can be set manually via the menu.
The value can be set manually through the
WriteProperty
service to
Device Object.Object_Identifier
.
The device’s
Object_Identifier
is a combination of the
Device
Object_Type
(8) and the
Device_Instance
(0-4194302), therefore its
decimal or hexadecimal representation tends to be incomprehensible.
For example, the
Device_Instance
=1000 has an equivalent
Object_Identifier
of 0x020003E8 hexadecimal or 33555432 decimal.
Baud Rate
0 = Auto
The controller configures its baud rate automatically by detecting the
network upon connection.
The value can be set manually from the available values of (0) Auto, 9600,
19200, 38400, and 76800.
Max_Master
127
Configure
Max_Master
value to increase network efficiency when there are
less than 127 devices on the network.
The
Max_Master
value can be changed through the
WriteProperty
service
to
Device
Object.Max_Master
.
For more information, refer to the
MAC Address and Max_Master
section.
Device Object.Object_Name
Name of the
device
Configure the name of the device through the
WriteProperty
service to
Device Object.Object_Name
. For example,
VAV T4 RT
.
