Thank you for help!
I tried the search function as you sgguested, and I pasted a screenshot of the result. As I am afraid of "regret" if I change something wrong in the project, I pasted a screenshot of the page you refered to. Do you think the edits are done some other plases than this since it has the numbers in it already??
The language is Norwegian. Here are a little translations: Dødbånd = deadband, Nivå inntak = level water intake dam, Effekt = realtime power from generator, Pulslengde = pulslenght of the electric motor which regulates needle for water into hydro generator, Innenfor = within, Dyse = nozzle, settpunkt inntak = setpoint intake.
Do you think I can do changes and download it to the plc while running, or do I have to "download all & burn"?