OPCDA.NET based client applications can access Xi servers without having to be modified. The applications only need to be compiled with a reference to the OPCDA.NET component with the Xi option. Depending on the server name specified in connect, either the OPC DA DCOM server the Xi Web Service is accessed. For Xi server access DCOM is completely eliminated because the Xi handling is within the OPCDA.NET component. There is no external DCOM to Xi wrapper involved. Without additional application development effort the application can access DCOM OPC DA server and Xi web services. Xi is specified with a structure and functionality similar to OPC DA, making the DA/Xi wrapping fast and reliable.
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