LonWorks Montioring And Control Network Design And Its Performance Analyse

The fieldbus technology is one of the focuses of development of current controlled field, local operation network LonWorks that was developed by American Echelon Company, because of its outstanding opening, interoperability, has gradually become one of the most competitive field buses at present. The key of realizing LonWorks technology is the development of the control network node. A kind of multi-input and output(MIO) general intelligent node is development and apply to the practically control system after researching the Neuron chip,LonTalk protocol,Neuron C language which are the kernel of the LonWorks fieldbus technology.The MIO intelligent node belongs to host-based node, including TP/FT-10F flash control module and AT89C2051 singlechip. The characteristic of the node is very fit for building automation and industry process control because the fan-out and fan-in are very flexible. As a bus protocol processor, The TP/FT-10F flash control module is connected between LonWorks backbone and single chip, AT89C2051 responsibles for the data collection and disposal from the field devices and the NeuroWire object communication mode is adopted. The software of the node is written according to the LonMark standard for the interoperability of the product. Then, the MIO node is used in one wireless light adjust system cooperate with two keypad nodes and an i.Lon100 server. Some intelligent terminals such as PDA, mobile phone can adjust the lights wirelessly through accessing the WEB HMI that is made in the upper-computer; also, the system can be accessed remotely through PCs. This is a whole network control solution.At last, the impacts of the network performance are analyzed because of the choosing and using the configuration properties, the author appeal to OEMs to append abundant configuration properties to perfect the software capability when develop the products. Another method of researching the LonWorks performance is put forward from the LonTalk protocol point of view, also is the task will be continued to complete.