Wiring for communications
TruVu™ UC683T
CARRIER CORPORATION ©2021
Installation and Start-up Guide
All rights reserved
17
To wire to a BACnet MS/TP network
An MS/TP network can be wired to
Port S1
.
1
Turn
off
the TV-UC683T's power.
2
Check the communications wiring for shorts and grounds.
3
Connect the communications wiring to
Port S1
’
s screw terminals labeled
Net +
,
Net -
, and
Shield
.
NOTE
Use the same polarity throughout the network segment.
4
Set
Port S1
to
MS/TP
on the controller setup pages >
BACnet
tab >
Port S1
.
5
If the TV-UC683T is at either end of a network segment, set the port's
End of Net?
switch to
Yes
.
NOTE
The controller’s
End of Net
switch applies network termination and bias. If the controller is at the end
of a network segment that includes a DIAG485 that has its
Bias
jumper in the ON position, set the
End of
Net?
switch to
No
and connect a 120 ohm termination resistor to the
Net+
and
Net-
terminals. See
DIAG485
Technical Instructions
for more information.
6
Turn on the controller's power.
To wire a third-party device
BACnet
: You can wire a third-party BACnet device to the TV-UC683T's
Eth0
,
Eth1
port or
Port S1
. See the
BACnet
Integration Guide
for the TV-UC683T.
Modbus
: You can wire a third-party Modbus master or slave device to
Port S1
. See
Modbus Integration Guide
for
the TV-UC683T.
Summary of Contents for TruVu UC683T
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