Ladder diagrams are also drawn with other helpful identifiers to aid a technician in electrically troubleshooting a system. Each horizontal line on the diagram is identified by a number printed to the ...

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 ...

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 ladder ...