Communications wiring
RTU Open v5
CARRIER CORPORATION ©2019
Integration Guide
All rights reserved
17
To set up the RTU Open for the LonWorks Option Card (Part #LON-OC)
1
Turn
off
the RTU Open's power.
NOTES
○
Changes made to the switches when the controller is on will not take effect until the power has been
cycled!
○
The controller’s rotary address switches are not used when the LON-OC is installed. That’s because each
LON-OC has a 48-bit Neuron ID that makes it unique on the LonWorks network.
2
Set the SW3 DIP switches for LonWorks as follows:
8
7
6
5
4
3
2
1
Off
On
On
Off
On
Off
Off
On
3
Plug the LonWorks Option Card's ribbon cable into Comm Option port
J15
on the controller. See illustration
below.
CAUTION!
The controller must be
OFF
before being connected.
4
Connect the LonWorks network to the LonWorks Option Card's 2-pin
Net
port.
NOTE
The 2-pin
Net
port provides TP/FT-10 channel compatibility. The TP/FT-10 or "Free Topology" network
type is
polarity insensitive
. Use 24 to 16 AWG twisted pair wire.
5
Turn
on
the RTU Open's power.
6
Commission the controller for LonWorks communication. See instructions below.
