Lon - WAGO LONWORKS 750-319 Manual

4 LON

LON (Local Operating Network) is a multimaster capable communication net-
work for decentralized industrial applications with time-uncritical require-
ments. Particularly LON is developed for building automation. Central tasks
are splitted in decentral tasks. So in every distributed intelligence (node) an
application processing occurs locally, without the interruption of the other
nodes in the network.
LonWorks
automation networks and was launched on the market by the American com-
pany Echelon
Due to the large spatial distribution of the bus subscribers and due to the large
number of communication media in a building or a machine line, all control
and regulation tasks are located directly to sensors and actuators, in other
words distributed or decentralized.
The sensors detect events such as key operation, light level, temperature, hu-
midity, movement etc. They send messages to the actuators to carry out the
commands. Sensors and actuators can be logically interconnected to perform
more complex functions.
In addition, LON is able to merge functions of widely differing systems. For
application examples, refer to the integrated room control of light, sun protec-
tion, ventilation and air conditioning. Here further LON sub-systems, such as
automatic doors, elevators, escalators or safety lighting can be seamlessly in-
tegrated.
For more complex installation systems the use of the WAGO LON bus system
results in a notable reduction of commitment to be put into projecting, wiring,
start-up and trouble-shooting. A dramatic cost reduction can be achieved com-
pared to other decentral control systems, such as, for example the European
Installation Bus (EIB).
Prerequisite of the EIB with was developed for spatial applications in building
automation and which is a "totally" decentral control system is that each indi-
vidual actuator, sensor and controller is of an "intelligent" nature. Such "intel-
ligent" components are very expensive.
In contrast to the above, LON in accordance with the concept developed by
WAGO, is a "semi-"decentralized, multi-network capable communication sys-
tem which requires per distribution - in a building for instance per storey - in
each case only one "intelligent" component, the so-called bus node.
Each node allows the connection of a large number of sensors, actuators and
operating units in the form of conventional standard components, which come,
of course, much cheaper.
Modular I/O System
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ON ORKS
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Technology encompasses a complete platform for the creation of
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Corporation.
LON • 93
General