What is LonWorks?

LonWorks is a universal control-networking platform that allows you to inexpensively implement a reliable distributed control network. A LonWorks network is made up of intelligent devices (nodes) that can sense, process, communicate, and control a multitude of applications ranging from handheld instruments to large process control systems.

LonWorks was introduced in 1991 by Echelon Corporation and is supported by more than 4,000 companies worldwide. The technology incorporates all the necessary hardware and firmware functions needed to implement a complete control network solution dedicated to performing both network and application tasks. Neuron chips(IC’s), manufactured by multiple vendors, form the heart of most LonWorks nodes. As a semi-dedicated family of microcontrollers, Neurons have programmable I/O lines and memory interfaces and are capable of performing the same functions as a microcontroller. The key difference is that Neuron chips are also able to communicate with each other via the LonTalk protocol and an external transceiver, allowing the creation of networks with as little as 2 devices to as many as 32,000.

LonWorks control applications are being created for OEMs and end users within the Semiconductor, Industrial Automation, Building Automation and Home/Utility Automation industries.

Advantages/Benefits of LonWorks:

• A VARIETY OF TRANSMISSION MEDIA CAN BE USED:

Standard Twisted Pair Wire, Power Lines, Radio Frequency, Coax Cable, Fiber Optic Cable, TCP/IP.

• ALL STANDARD NETWORK TOPOLOGIES ARE SUPPORTED:

Buses, Stars, Rings and other combinations.

• INSTALLATION BENEFITS:

Reduces Wiring, Simplifies Installation of I/O Devices, Permits Reconfiguration Within the System,
Ensures Communication in Noisy Conditions, Enhances System Reliability, Enhanced Diagnostic Capabilities
Reduction in the Parts Necessary to Support the System, Interoperability, Allows for Flexible Topology,
Supports Multiple Media.

• USED IN A VARIETY OF APPLICATIONS:

Industrial Automation, Building/Home Automation, Utility and Transportation.

View LonWorks Application Articles

LonWorks Links:

LonMark International: http://www.lonmark.org

LonMark Americas: http://www.lonmarkamericas.org

Building Open Systems Tour: http://www.buildingopensystems.com