Specifications

LONWORKS® LN-Series Network Communication and Interface Guide Technical Bulletin 17
Network Extension
Follow length and device limitations when cabling a network. Before selecting a
channel type and cable type, verify the maximum number of devices that can be
added to a channel and the maximum length of the network. If you exceed the
limits for the number of transceivers or total wire distance, you can add one FTT
physical layer repeater to connect two segments and double the overall system
capability.
Network Grounding
Shielded Twisted Pair Cable
When using Shielded Twisted Pair cable, terminate the twisted pair and ground the
cable shield as shown in Figure 12.
IMPORTANT: Use shielded cable only when installing network cable outside
of a building to protect it from Electromagnetic Interference (EMI).
Bus Toplogy
T
T
...
Re peate r
or
R outer
Bus Toplogy
T
T
...
Figure 11: Extended Network
Figure 12: Grounding Shielded Twisted Pair Cable