PLC virtual simulation experiment software design and implementation

This paper presented the design and implementation solution of virtual simulation experiment software in .NET framework environment. An OPC client was realized by C# programming language in the program, and communicated with the OPC server based on COM. By using LINQ technology to access SQL server database, simulation controlled objects library was built. Communication between C# application and Flash simulation object was also researched in this work. The experimental result shows that the virtual simulation experiment software is convenient to experiment management, data access, improve the quality of PLC experiment and reduce cost at the same time.