I can build the screens and the controls for most jobs now. A single line, a small process, no problem. But when it's the whole plant, hundreds of points all talking to each other, I lose the thread. I stare at the tag list for a system that big and feel like I'm in over my head.
More people experience this than they realize.
You can build small control systems, but the plant-wide ones still overwhelm you.
If this sounds familiar, the Library can help you find the bigger picture.