Error stating that OpcNetApi.dll or one of its dependencies could not be found.
If you are seeing this filename because of an error message (e.g., "opcnetapi.dll not found" or "opcnetapi.dll failed to register" ), here are the likely causes:
The client application fails to connect to a remote OPC Server, raising a COM exception. opcnetapidll
To get an industrial application off the ground using this DLL, you generally follow these steps in :
The official installer sometimes fails to register the DLLs correctly or places them in unexpected folders. : Look for the DLLs in the installation folder (often under C:\Program Files (x86)\Common Files\OPC Foundation\ Error stating that OpcNetApi
Here is a breakdown of the "piece" (component) you identified:
. It serves as a high-level managed interface for developing .NET applications—typically in C# or VB.NET—that need to communicate with "Classic" OPC servers, such as those for Data Access ( ), Historical Data Access ( ), and Alarms and Events ( OPCconnect.com Core Functionality : Look for the DLLs in the installation
The opcnetapidll abstracts this complexity. It provides a managed code interface that feels native to .NET developers, handling the low-level communication with the COM-based OPC server behind the scenes.
Requires OpcNetApi.Com.dll and the (RCWs) to be installed on the machine.