As a part of a job assignment where I am to implement and test an OPC server on a Raspberry Pi, I found and implemented a node.js server found at this Github repository (sample_server.js).
Now, being new to OPC in general, I tried downloading the MatrikonOPC Explorer to connect to the server, but it refused to find the server. At first I thought I was just not putting in the right things (endpoint URL goes somewhere?) into the connect prompt, but having read some more, (I think) I now understand that the explorer uses the regular OPC specification while my server is a OPC-UA server. Please correct me if I'm wrong here.
Anyway, I would like to see if this server actually works and can be accessed. What is a good way of testing this? If possible, I would like to test it over the network, from my Windows PC (they are both on the same network, and I have ensured they are pingable from eachother).
It turns out my suspicion was right - the problem was solved by adding a UA proxy that translated the OPC-UA to OPC Classic, allowing the explorer to detect and access the server.