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Application Sheet
Lit. No.
VY7FD102
Date:
2000-02-04
ECL 2000/Comfort in Router Network
Heat Meter
Main station
ECL Comfort 200/300
ECL Comfort 200/300
ECL 2000
ECL Comfort 200/300
Terminator
ECL 2000
LON Bus TP/XF 78 or LON
Free Topology FTT 10 A
ECL Comfort 200/300
Terminator
Router
LON Free Topology FFT 10 A
The universal router module is used for con-
necting different (physical) channels in
LONWORKS ® networks.
In difference to a physical repeater a router
is an active device receiving messages and
sending messages.
A LonWorks router basically consists of two
Neuron chips and two transceivers. Both
Neuron chips communicate with each other
via their application port. The router firmware
executes in both Neuron chips and forward
packets from one channel to another steered
by internal routing tables. These tables are
either pre-programmed during network con-
figuration/installation or configured to be
self-learning.
Because of the active message processing
by two Neuron ® chips, a delay between
both sides has to be kept in mind.
Routers are normally designed on the basis
of Echelon´s standard router core module
RTR-10. By use of appropriate tools such as
LonBuilder ®, LonMaker™ etc., it is config-
urable as repeater, bridge, configured router,
or learning router.
The user is responsible for using proper
Configuration parameters!
Normally the router is pre-configured as a
repeater.
Routers are used to optimise packet traffic
on channels. Packets generated on one
channel are selectively forwarded to an-
other channel if they contain address infor-
mation referencing that channel.
Routers can also be configured to operate
as logical bus repeaters. In larger networks
it can be used as a logical repeater, e.g. in
situations when more than two physical re-
peaters are required. This application mode
is especially useful where the distance be-
tween nodes exceeds the constraints
specified by the transceiver designer.
Finally Routers are used when it is neces-
sary to change communication media e.g.
from Twisted-Pair Network to Power-Line
Network, Optic Fiber Network etc.
Application Sheet
Lit. No.
VY7FD102
Date:
2000-02-04
What do I need?
• PC (Laptop)
• Interface between LON network and the PC
• Router configuration tool
If bindings between ECL 2000/Comfort, Heat Meter, etc. are desired or visualisation possibili-
ties of data from the network:
• Binding tool
• Visualisation software incl. Drivers
/