18
BAS-SVX62E-EN
Wiring Installation
Setting Up the UC210 Controller on a BACnet Link
Observe the following when setting up the UC210 controller on a BACnet link.
•
Use 18 AWG shielded communication wire for BACnet MS/TP installations.
•
Limit BACnet MS/TP wiring links to 4,000 ft. There is a maximum of 60 devices per link (
without
a repeater
).
Note:
Two (2) BACnet links are available on the Tracer SC.
•
Connect the BACnet link to the UC210 controller terminals
labeled
Link
as shown on the right. Incoming wires can be
connected to the first two terminals, and the outgoing
wires can be connected to the second set of terminals, so
there is only one wire per termination. For more details,
refer to the
BACnet Best Practices and Troubleshooting
Guide (BAS-SVX51-EN)
.
Setting the Address
The three (3) rotary address dials on the UC210 serve one or two purposes depending upon the
network: they are always used for the MAC Address, which is sometimes all or part of the BACnet
Device ID.
Figure 5.
Setting the rotary address
.
MAC Address
The MAC Address is required by the RS-485 communication protocol on which BACnet operates.
Valid MAC addresses are 001 to 127 for BACnet.
Important:
Each device on the link must have a unique MAC Address/Device ID. 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.
Use a 1/8 inch
(3.2 mm) flathead
screwdriver to set
rotary address
dials. These dials
rotate in either
direction.
