Right-click the DLL file, go to . Compare the file version with your OPC server’s requirements. If your OPC server expects version 2.05 and you have 3.00, you will have problems.
Use the Opc.Da.Server class to connect to the hardware. opcnetapidll
: Handles the complex "plumbing" required to bridge the managed .NET environment with the unmanaged COM servers used by older OPC standards. Abstraction : Allows developers to work with high-level objects like Subscription instead of low-level memory pointers and COM handles. OPC Foundation Typical Implementation Workflow OpcNetApi.dll in a C# or VB.NET project, follow these standard steps: Right-click the DLL file, go to