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 ...

WPLSoft is a fully-featured free PLC simulation software. You will find all the ladder logic functions here, such as bit logics (NO, NC, set coil, normal coil, reset coil), mathematical operators ...

Named for its resemblance to a ladder, the diagram consists of two vertical rails connected by several horizontal rungs. Each rail is energized at a different voltage, and each rung contains at least ...