Thank you for the explanation.

For now, I will assume that we have the server endpoint part clarified - it looks like it is "opc.tcp://simatic:4845". The "[None:None]" part in the ICONICS string probably refers to security parameters. In our approach, the security profile chosen depend on endpoint selection policy, which has configurable parameters on the EasyUAClient object. We can describe it if you like, but it is likely that it will work "out of the box", so let's ignore it for now.

So, we are left with the node identification. I suggest that you study a bit about it, because the subject is not simple. One source of information is a corresponding part in our "Concepts" document.
The primary means of identification should be a Node Id. But, your string can also be a "browse path". Browse paths CAN be used as well, but they are highly ineffective.

You can do the following: Start the EasyOPC-UA Demo Application that is installed with QuickOPC (from the Start menu). Select the server endpoint. Then, go to the node browsing. Select the node you are interested in.





Then, in the "Node information" panel at the bottom of the dialog, you will see the information about the node. Simply copy the "Node Id" string, and use it as the UANodeDescriptor argument to the method call (the string has an implicit conversion to UANodeDescriptor; and, in most methods on the EasyUAClient that work with a single node, this is the second argument to the method).

If you insisted on using the browse path, things would be a bit more complicated, because

• For brevity, the browse path is not always displayed in full in the dialog - it may be shortened
• You need to construct the UANodeDescriptor object differently

Best regards

Please first tell me, where do you see this syntax? (which program, and ideally a screenshot).
Has it been obtain by browsing, or "given" to you as such?

"opc.tcp://simatic:4845" looks like UA server endpoint URL, so it would go to the first argument (of type UAEndpointDescriptor) of most methods on EasyUAClient (the string with endpoint URL has implicit conversion to UAEndpointDescriptor).

I will return to the remainder of the string after I receive your answer. Also, is this somehow connecting to an OPC Data Access server, through a proxy/wrapper?

Thank you