Where to find the information about COM threading model used for the OPC client, as part of OPC lab certification process I have to verify that OPC client can be implemented using different COM threading models like Single Threaded Apartment (STA) and Multi-Threaded Apartment (MTA) should be able to connect to server and read data with out fail.
Used below client for testing but not sure what threading model the client was implemented with.
- Kepware- OPC Quick Client
- Softing-OPC Demo Client
- Indusoft-Webstudio
- Matrikon OPC Explorer
- OPCFoundation- Sample Client