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OPC Server Arduino and Blynk can't work together

Dear All,

I have a project with arduino + ethernet shield w5100. I use OPC Server for arduino and Blynk, if use separately OPC Server and Blynk work well but if use in the same sketch WinCC Flexible can’t display the tags in Arduino. Whats the problem with that ?

I’m guessing that, like me, very few (if any) community members are familiar with OPC server.
Maybe it would be a good idea to share some background information and a working OPC sketch (correctly formatted of course).

Pete.