Knowing Rockwell Software OPC wrapper more
Good day! I just had my interview recently, and I know I did great except for one thing: They asked about rockwell software opc wrapper which I am not very familiar of – though I know it's some kind of an API or protocol but nothing more. But they said to give my application a consideration if I could just give them a further explanation about that question.
I know rockwell is just a brand, but what exactly is opc wrapper? Or how does it work?
Your answer about this matter means a lot to me, I hope to be hearing from you soon. Thank you.