20
BAS-SVX080B-EN
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ntt:: Each Symbio 800 device on the BACnet link must have a unique rotary switch value,
otherwise communication problems will occur.
ADDRESS
0 1
2
3
45
6
7
8
9
x1
0 1
2
3
45
6
7
8
9
x10
0 1
2
3
45
6
7
8
9
x100
Use a 1/8 in. (3 mm) flathead screwdriver
to set rotary switches. Switches rotate
in either direction.
Before
After
Device ID Assignment for BACnet TP Devices
Each unit controller must have a unique BACnet device ID. Tracer
®
SC automates the process by
calculating a unique device ID for each unit controller and then saving the device ID to memory in
each device.
BACnet TP device IDs are calculated using the following three sets of values:
•
The Tracer SC rotary switch value (1 to 419)
•
The Tracer SC BACnet TP link number (1 to 2)
•
The unit controller rotary switch value (1 to 127)
The three values are joined together to form the BACnet device ID for the unit controller as
shown in the following table.
Tracer SC rotary switch value (21)
0
2
1
Tracer SC BACnet TP link number (1)
1
Unit controller rotary switch value (38)
0
3
8
BACnet Device ID: 211038
0
2
1
1
0
3
8
Device ID Assignment for BACnet/IP Devices
Each unit controller must have a unique BACnet device ID. Tracer SC/SC+ automates the device
ID assignment process for Trane unit controllers by calculating a unique device ID for each unit
controller and then saving the device ID to memory in each device.
For devices communicating over BACnet/IP, Tracer SC/SC+ calculates the device ID using the
BACnet network number defined for Ethernet port 1 and the unit controller rotary switch value.
The Tracer SC/SC+ rotary switch value is not used in the device ID calculation for IP devices.
BACnet/IP device IDs are calculated using the following two sets of values:
•
The BACnet network number for Ethernet 1. (This number can be changed by the user).
–
Tracer SC defaults the BACnet IP network number as 1, and under most circumstances it
is not changed.
•
The unit controller rotary switch value (1 to 999). The Tracer SC/SC+ rotary address is not
used to calculate BACnet/IP device IDs.
The following table shows this process using a Tracer UC600 unit controller.
BACnet network number Eth port 1 (1)
1
Unit controller rotary switch value (42)
0
4
2
BACnet/IP Device ID: 01042
0
1
0
4
2
