I have to create a FB in ST as a continuous loop but I have no idea how to realize this?
What you mean by "Continuous loop" ?
I mean a finite loop just like a for-loop.
Here's my solution. I think it could be less difficult but it works
Enable should not be an input as you are using it as an output in the program: Enable:= false
as long as PLC_PRG runs your loop will be processed.
please never never stay in a loop, as the watchdog will be alarmed.
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