LON • 97
Modular I/O System
L
ON
W
ORKS
®
Thanks to convenient WAGO plug-ins, such as
TOPLON
®
IF which includes
some typical building automation functions or
TOPLON
®
PRIO which enables
easy data assignment to network variables, ready made application functions
are available to you.
If you want to program your own special Neuron-C application, you can use a
set of functions from the WAGO Neuron-C function library. This library pro-
vides important basic functions for operation with a control system, such as
reading of digital inputs and analogue inputs and writing of digital and ana-
logue outputs. This makes programming much easier.
i
More information
Please find some detailed information about plug-ins, function libraries and
updates on the Internet at:
The results of the Neuron°C application are transmitted to actors or via the
fieldbus to other nodes in the form of messages.
62 digital 4 channel modules, max. 60 analog 2 channel modules or 40 analog
4-channel modules respectively can be connected to one LON fieldbus coupler
programmed with an application in the Neuron°C programming language.
4.3.1 Transmision media
In the network architecture the LON nodes are connected by means of a mes-
sage transmission medium. Access of a LON node to the transmission medium
is made possible by a transceiver. This transceiver greatly depends on the in-
dividual transmission medium. With LON, the corresponding transceivers are
able to support a large number of transmission media, e. g.:
twisted pairs (e.g. via transceiver FTT-10A)
power line (e.g. via transceiver PLT-21)
Radio connection (e.g. via transceiver LF 433MHz)
Infra-red
Coax cable
Fibre optic cable
With the use of different transmission media with different bit rates in one net-
work, coupling elements, the so-called
routers
, permit the transmission of
messages from one medium to the other.
The most widespread type of wiring in buildings is the twisted pair wiring. In
addition to being low priced and easy to handle, it allows wiring as a bus with
only one matching resistor. Even a ring- or star-shaped wiring as well as any
combination of these two are possible. A matching resistor is required to pre-
vent signal reflections from interfering with the data traffic on the bus.