Research On Information Conversion Technology Between Ethernet And LonWorks

As the automation degree of the corporation becomes higher, Field Bus technique is widespread availability in industrial process. Field Bus technique is adopted by most of industrial control networks. As a new kind of "Field Bus", industial Ethernet become a goal of industrial control networks in future. At the meantime, Ethernet technology plays a more and more important role during the corporations' informational process. Along with the corporations increasing their informational degree , it has very important actual means and extension value to carry out that the corporation information intranet interconnects with the Field Bus, and already become a large investigation hotspot.LonWorks bus is widely applied now, which has many properties, for example, LonWorks bus's standard completely opened, plug and play convenient to interconnect, many connection styles to multi-communication media, freely topologic network and so forth. It has a important position in automatic system.In this dissertation, in the platform of embedded system, we will study Ethernet and LonWorks information conversion technology to realize their communication, realizing the connections between the equipments layer and Internet layer, resolving remote distance control questions of LonWorks.The dissertation first analyses the protocol of Ethernet, TCP/IP and LonTalk, then designs the hardware modules of the system, including processor controller module, Ethernet network card cutover module, Lon intelligent node module based on Neuron TMPN3150.After designing and materializing of the hardware modules, it analyses the demands of the software system, including Ethernet network card' s driving, TCP/IP communication protocol's realization, a browser of Web Server, communication among the processor and Neuron chip, Neuron C programand so on.Industrial development in future, it is a necessary tendency that the Ethernet interconnects other heterogeneous networks. It will provide a base, studying the interconnection of Ethernet and field-bus, to connect other networks in future, which has a vast application prospect.