Research And Development For The OPC UA Client's Access And Test Function

The OPC Unified Architecture using the integrated address space and more secure transport mechanism break through the limitations of traditional OPC, which make the Internet-based data communication across different platforms more secure. The research and development of Client application based on OPC UA specification for the test of server application is necessary. This paper study client in structure and function for application with OPC UA specification, and develop a client application in the.NET platform structure using c# language. It is describe that the client browse, read and write, subscription and the realization of the corresponding code, and test the client function such as find servers, The result indicate that the client can communicate with the server completed the server application testing tasks.