Yes, search the internet, read the MX OPC Help files
MX OPC has built in help (F1)
If the built in node help is insufficient or the nodes readme.md is insufficient :- you will have to search the forum, ask the author, work it out or wait for someone to respond to your question.
Try solution provided here. It utilizes full features provided by IIS so it is ready as an Edge connection or Gateway. It uses JSON as return so various clients can benefit from this format. Very simple installation and almost zero configuration to run. This new approach is worth a try no matter what client you are using.
Have you thought of using OPC Expert and then either OPC UA to destination or even MQTT. You would determine the data you want upfront so only sending that to the cloud and use the publish/subscribe method.
OPC UA tunneling could also be used between source and target rather than MQTT- Either seems quite simple with this software.
I am getting error while connecting OPC server using OPC DA Read node. Any solution?
Error: Exception occured while forming Session Security Type3Response