Ladder Logic instructions work as conditions on the left side, while instructions on the right side activate with the conditions fulfilled. In this post, we are going to do a Ladder Logic Rung Analysis. It was necessary to maintain the previous system’s similarities hence, the first PLC programming language developed was Ladder Logic. The problem was that relays were expensive, needed continuous maintenance, and were difficult to modify. Before developing PLCs, manufacturing plants used relay-based circuitry to activate various loads depending on the Relay’s interconnection. In the top 5 most popular PLC programming languages, we found Ladder Logic.
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