BECKHOFF DK9222-0411-0038 - Manual

I/O
I/O, Building Automation
Application Note DK9222-0411-0038
Keywords
KL6401
TwinCAT
Building Automation
KS2000
LON
Line coupler
SNVT
Transceiver
Integration of LON networks into a PC-based building
automation system
This application example from the ’Building Automation Sub-bus Systems’ series conveys the basic
principles of LonWorks (LON for short) and the integration of LON devices into the PC-assisted building
automation system via the Beckhoff KL6401 LON Bus Terminal. LON is a local sensor/actuator network in
which the devices communicate directly with one another via network variables (SNVTs). The typical area
of use of LON is the trade-spanning automation of functional buildings, in which the modular structure
of LON allows flexible changes and conversions. Besides the KS2000 configuration software for the
parameterization of the SNVTs, the LON user requires a LON tool in order to establish the ’binding’ between
the individual devices.
1. LON
LonWorks (Local Operating Network: LON for short) is a decentralized network for intelligent sensors, actuators and operating
devices with a large field of application; its main use is in the automation of functional buildings. Through transmission media
such as twisted pair wires, sensors and actuators can communicate with one another as desired from any point to any other
point on the basis of network variables (SNVTs, Standard Network Variable Type). Each LON device contains a microprocessor,
the neuron, which controls the communication. Each neuron has a unique identification number, the neuron ID, which
corresponds to the physical address and is set in the factory.
LON is typically used for trade-spanning networking within the building automation; a LON network consists of up to 32,000
intelligent network nodes. LON is an international standard on account of its widespread use worldwide. It is mainly used in
the automation of functional buildings, since devices developed by different manufacturers from different systems and trades
New Automation Technology Beckhoff 1
For application notes see disclaimer on the last page