Distech Controls RT Series - LonWorks Network Guide; LonWorks Summary Specifications; LonWorks Network Configuration

7
LonWorks Wiring Guide
Overview
For clarity we will use the term “Device” to represent any product with an active LonWorks network
connection, including Distech Controls and non-Distech Controls controllers.
Summary Specifications:
Parameter
Details
Network Wiring
24 to 16AWG, twisted pair
Maximum total wire length
1
1600 feet (500 meters) in free topology
Maximum device-to-device distance
1600 feet (500 meters) in free topology
Polarity
Polarity insensitive
Multi-drop
Free Topology
Termination for Free Topology Network Segment
One RC network with Ra = 52.3Ω±1%, 1/8W
Termination for Doubly Terminated Bus Network
Segment
Two RC network with Ra = 105
Ω
±1%, 1/8W
Number of transceivers per segment
Up to 64
Baud rate
78000 bits per second
1
Network segment length varies depending on wire type.
Table 1: Summary of Specifications for a Distech Controls’ LON Network
Network Configuration
The LonWorks network is designed to support free topology wiring and will accommodate bus, star, loop or
any of these topologies. LonWorks devices can be located at any point along the network wiring.
Figures 3.1 to 3.5 present five different network topologies. The actual termination circuit will vary by
application.