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Nctc ladder logic program6/5/2023 MEM : BOOL := 1 (* initialise edge flag *) Looks like this: FUNCTION_BLOCK F_TRIG (* falling edge *) The code of such a detector I've found in the back of a book: "IEC 61131-3: My current approach needs a falling-edge detection. I do not know of a standard method to implement such, so I'm trying to construct one myself. For one of my programs I need a normally closed, timed-closing (NCTC) relay in Ladder Diagram.
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