Installation - Controls
48
UNT-SVX041D-EN
MAC Address
The MAC Address is required by the RS-485
communication protocol on which BACnet
®
operates. A
UC400-B controller can use a MAC Address from 001 to
120.
Important:
Each device on the link must have a unique
MAC Address/Device ID. The controller
rotary addresses should be sequentially set,
with no gaps in the numbering, starting with
001 on each link (for example 001, 002, 003,
004 and so on). A duplicate address or a 000
address setting will interrupt
communications and cause the Tracer
®
SC
device installation process to fail.
BACnet
®
Device ID
The BACnet
®
Device ID is required by the BACnet
®
network. Each device must have a unique number from
001 to
4094302.
BACnet® networks without a Tracer
®
SC system
controller
On BACnet
®
networks without a Tracer
®
SC system
controller, the Device ID can be assigned one of two ways:
•
It can be the same number as the MAC Address,
determined by the rotary address dials on the
UC400-B controller. For example, if the rotary address
dials are set to 042, both the MAC Address and the
BACnet
®
Device ID are 042.
•
It can be soft set using the Tracer
®
TU service tool. If the
BACnet
®
Device ID is set using the Tracer
®
TU service
tool, the rotary address dials
only
affect the MAC
Address, they do not affect the BACnet
®
Device ID.
BACnet® networks with a Tracer
®
SC system
controller
On BACnet
®
networks with a Tracer
®
SC system controller,
the Device ID for the UC400-B controller is always soft set
by the system controller using the following scheme
illustrated below.
Note:
The BACnet
®
Device ID is displayed as the
Software Device ID on the Tracer
®
TU
Controller
Settings
page in the
Protocol
group.
shows an example of BACnet
®
link wiring with
multiple UC400-B controllers.
Air-Fi
®
Wireless Communications
System
For more detailed information on Air-Fi
®
Wireless
Communications system and devices, see:
•
BAS-SVX40*:
Air-Fi
®
Wireless Installation, Operation,
and Maintenance
•
BAS-PRD021*-EN: Air-Fi
®
Wireless Product Data Sheet
•
BAS-SVX55*:
Air-Fi
®
Wireless Network Design
Air-Fi
®
Wireless Communications Interface
(WCI)
A factory-installed Air-Fi
®
Wireless Communications
Interface (WCI) provides wireless communication
between the Tracer
®
SC and Tracer
®
unit controllers. The
Air-Fi
®
WCI is the perfect alternative to a Trane BACnet
®
wired communication link. Eliminating the
communication wire between terminal products, space
sensors, and system controllers has substantial benefits:
•
Reduced installation time and associated risks.
•
Completion of projects with fewer disruptions.
•
Easier and more cost-effective re-configurations,
expansions, and upgrades.
Figure 35.
BACnet device ID
Figure 36.
Example of BACnet link wiring with multiple
UC400-B controllers
+
+
24VDC
GND
Comm
+
Comm
-
BACnet
+
-
+
-
IMC
+
-
Gnd
24VDC
1
2
3
4
1
2
3
4
1 2 3 4
1 2 3 4
24VDC
GND
Comm
+
Comm
-
BACnet
+
-
+
-
IMC
+
-
Gnd
24VDC
1
2
3
4
1
2
3
4
1 2 3 4
1 2 3 4
24VDC
GND
Comm
+
Comm
-
BACnet
+
-
+
-
IMC
+
-
Gnd
24VDC
1
2
3
4
1
2
3
4
1 2 3 4
1 2 3 4
Tracer SC
UC400-B
Zone Sensor
Trane
BACnet
Terminator
Zone Sensor
Zone Sensor
UC400-B
UC400-B
