Echelon FT 3150 Smart Transceiver - Manual (Page 11)

FT 3120/FT 3150 Smart Transceiver Data Book 5
Related Documentation
Unlike bus wiring designs, the free topology FT Smart Transceivers use a wiring scheme that supports star, loop, and/
or bus wiring (see Figure 1.3). This design has many advantages:
1. The installer is free to select the method of wiring that best suits the installation, reducing the need for advanced
planning and allowing last minute changes at the installation site.
2. If installers have been trained to use one style of wiring for all installations, free topology technology can be intro-
duced without requiring retraining.
3. Retrofit installations with existing wiring plants can be accommodated with minimal, if any, rewiring. This capa-
bility ensures that FT Smart Transceiver technology can be adapted to both old and new projects.
4. Free topology permits FT Smart Transceiver systems to be expanded in the future by simply tapping into the
existing wiring where it is most convenient to do so. This reduces the time and expense of system expansion, and
from the customer's perspective, keeps down the life cycle cost of the free topology network.
(* = Termination. The actual termination circuit will vary by topology.)
Figure 1.3 Typical Wiring Topologies Supported by the FT Smart Transceivers System Content
Related Documentation
The following Echelon documents are suggested reading:
L ON W ORKS SMX Transceiver Datasheet (003-0336-01)
LonBuilder User's Guide (078-0001-01)
NodeBuilder User's Guide (078-0141-01)
Neuron C Programmer's Guide (078-0002-01)
LonBuilder Hardware Guide (078-0003-01)
Singly Terminated Bus Topology
Doubly Terminated Bus Topology
Star Topology
Loop Topology Mixed Topology
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