![]() ![]() Relays were used, and still are, to control various systems and these control systems are often very complicated. You don’t get anything too fancy with ladder logic rather, the graphical program is meant to represent a facsimile of a wiring diagram for traditional relay logic. This can be confusing to programmers who come from a background in traditional languages, such as C or C++. Unlike other computer languages, ladder logic is graphical, meaning that the program is literally drawn out rather than typed. The most important thing about learning to program PLCs is understanding ladder logic. ![]() ![]() Allen Bradley > Wrapping Your Head Around Ladder Logic
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