Where is a good place to start with making an application in .NET that communicates through OPC? [closed]

Where is a good place to start with making an application in .NET that communicates through OPC?

How does OPC UA communication work?

OPC UA is used as a transport route and IT standard featuring integrated security. As an OPC UA client, the controller pushes the data as "historical access" data directly into the "big data management solution" stored in the cloud.

What is the default OPC UA port for Kepware?

The default KEPServerEX UA port is 49320.

You can find a good article and a library to start with here: http://www.codeproject.com/KB/COM/opcdotnet.aspx

The Code Project article is from the early days of .NET and may not be the best option today.

Alternatives include OPC Foundation's own .NET API (requires OPC Foundation membership) or several commercial products. OPCconnect.com lists a number of these.