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Use for questions related to ladder diagrams or ladder logic, this is a graphic rule-based language. This is a traditional documentation method for Programmable Logic Controllers (PLCs), and it represents the connection of physical relays to implement the desired functionality.

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what is the logic behind these ladder lines

I have a ladder diagram for timing porpose.(keyence KV-24DR) some instructions are repeated many times but I dont understand what are these for. can anybody help me? …
reza moslemi's user avatar