Communications wiring
RTU Open v3
Carrier Proprietary and Confidential
CARRIER CORPORATION ©2016
Integration Guide
All rights reserved
14
LonWorks
When you handle the LonWorks Option Card:
•
Do not contaminate the printed circuit board with fingerprints, moisture, or any foreign material.
•
Do not touch components or leads.
•
Handle the board by its edges.
•
Isolate from high voltage or electrostatic discharge.
•
Ensure that you are properly grounded.
Refer to
Appendix E
(page 51) for the LonWorks Protocol Implementation Conformance Statement (PICS).
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 Comm Selector DIP switches
DS1
and
DS2
on
SW3
for 38.4k Communications speed. This is the
speed at which the LON-OC speaks to the RTU Open. It is fixed at 38.4k.
3
Set the Comm Selector DIP switches
DS3
through
DS6
on
SW3
for LonWorks. See example below.
4
Set the Comm Selector DIP switch
DS7
on
SW3
to the ON position to enable the LON-OC.
5
Leave Comm Selector DIP switch
DS8
on
SW3
in the OFF position since it is not used.
SW3 Protocol Switch Settings for LonWorks
DS8
DS7
DS6
DS5
DS4
DS3
Off
On
On
Off
On
Off