Use a URL (like opcda://localhost/Vendor.ServerName ) to connect. Create a Subscription: Group the tags you want to monitor.
Create an instance of a server object (e.g., Opc.Da.Server ). opcnetapidll
is a core managed assembly provided by the OPC Foundation. It serves as a standardized application programming interface (API) that allows .NET applications to interact with OPC servers. Use a URL (like opcda://localhost/Vendor
However, because of the massive amount of legacy hardware still in operation, knowing how to work with OpcNetApi.dll remains a highly valuable skill for industrial software engineers. is a core managed assembly provided by the OPC Foundation
It is important to note that OpcNetApi.dll is primarily used for (DA, HDA). While it is still widely used in existing industrial plants, the industry is moving toward OPC UA (Unified Architecture) . OPC UA does not rely on COM/DCOM and uses a completely different set of libraries.