Use the LibOPCServerOverride example in a multi-instance OPC server

Note: For information on overriding default configuration settings, see Modify configuration settings.

When using multi-instance Open Platform Communication (OPC) servers, each instance needs its own copy of the libOPCServerOverride.dll file (refer to volume 1 of the AVEVA Enterprise SCADA RealTime Administrator documentation for information on configuring multi-instance OPC Data Access (DA) servers).

Using the libOPCServerOverride example in a multi-instance Open Platform Communication (OPC) server

1. After creating the libOPCServerOverride.dll file, copy it to the instance directory.

   For example, %DNADataRoot%\RealTime\bin\My.OPC.TestServer.1.

2. Open the %DNADataRoot%\RealTime\config\Settings\OPCDAServerConfig.json file (see Use the LibOPCServerOverride example), and add the following to the My.OPC.TestServer.1 section:

   "OverridePlugin": "My.OPC.TestServer.1\\libOPCServerOverride.dll"

3. Save the file.

4. Restart the OPC Server to start using the new libOPCOverride change.