When a PLC is used primarily to replace relays, timers, and counters, it's hard to beat the simplicity and usefulness of ladder diagram programming.Their ability to accept programming ...

In a PLC-controlled system, problems rarely occur inside the PLC. A malfunction is nearly always on the input side or output side of the PLC. The ladder diagram shows you what the inputs and outputs ...

Ladder Diagram example. Source: automationprimer.com Though PLC (programmable logic controller) programming languages may not receive the attention that general computing programming languages, such ...