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 ...

This class explains how basic ladder diagram programming is used to program PLCs. It examines the basic rules that are used to construct a ladder diagram program, including Boolean logic functions. It ...

This class explains how ladder diagram programming is used to program timers and counters. It examines the basic rules for each type of timer and counter used in LAD programming for S7-1200 PLCs.