Virtual DCS Engineer Station Research And Development Based On IEC61131-3and PLCopen Standard

With development of industry control technology and computer technology,scale and control quality of distributed control system(DCS) assume the geometric series to grow,heading to be integrated, open, digital, intelligent and decentralized. In DCS simulation system, virtual DCS with high fidelity, multiple application functions and less investment costs is access to vast number of consumers as main mean of simulation training of unit operation.As important part of virtual DCS,virtual DCS engineer station is closely to virtual DPU the core of virtual DCS. Virtual DCS engineer station’s main function is to off-line configuration software,analyze to generate download files, On-line supervise and maintain virtual DCS. With vector drawing ability of visio,Function Block Diagram(FBD) can be drawn with IEC61131-3programmable controller international standard,then complete control strategy configuration by intelligent connection.Develop man-machine interface of virtual DCS engineer stationon the.Net platform.PLCopen Standard works out the standards Extensible Markup Language(XML) specification for IEC61131-3which defines open interfaces in a variety of software tools in order to transfer and couple the information on various platforms.Use object-oriented language C#platform to analyze conveniently all kinds of objects in Visio,then analyze shapes and connections etc. in logic configuration,generate XML file in accordance with PLCopen standard. Through the FTP server,XML file download to DPU and object model server so as to complete control function.This paper accomplishes virtual DCS engineer station function including control strategy configuration design, logic configuration analyze and standardized industrial control information storage through the example of typical control system.