The Research And Application Of LonWorks Configuration Supervisory System Based On OPC Technology

LonWorks, which is one of the field buses, is wildly used in the industry contro supervisory system, LNS (LonWorks Network Service), the OS of LonWorks,becomes more and more popular too. The tradition technology based on DDE already can not satisfy the request for monitoring of the'LNS network. And the LonWorks configuration supervisor) system based on opc technology, effectively displays the LonWorks field buses, configuration softward and the common software respective superiority and makes up each other the insufficiency. The supervisory system can widely applies to the industry control system development, and that is also a pattern and a direction for automatic control system develops.This paper indicates the LonWorks field bus and the LNS network operating system firstly. Then described the OPC technology and its specification, and forecast to new generation of OPC XML-DA specification. According to the LNS, OPC technology, the paper studies deeply OPC DA specification, designs and develops OPC server and client based on COM technology, provides main methods to implement it. The paper goes deep into the process of data access. With the LonWorks field bus and RSView32 configuration softward, developed a valves supervisory system.The author participated in building the Jiangxi Province Nanchang scienc bureau project. The LonWorks data acquisition and the processing research, designed and established a valve supervisory system based LonWorks fieldbus. The result of experiment shows that the system isvalid. At present, this valve supervisory system already obtained the utilization in the Zhuzhou valve company, The system runs normally in factory and makes good result.This system is developed on Windows XP. The development tools are Visual C++6.0, RSView32. The paper goes into particulars in parts design including design theory, program methods and implementing technology.