Learners examine the animated Timer-On Delay instruction and the Timer-Off Delay instruction of a PLC timer. A brief quiz completes the activity.

In this animated object, learners examine the types of information to enter, and the sequence of steps required, to program a programmable logic controller (PLC) timer.

Learners study the descriptions of the three words in a PLC timer: EN, DN, and TT. They then test their knowledge in a brief quiz.

In this screencast, learners examine the internal elements of a 555 IC and their operation.

In this interactive object, learners view a practical application of a PLC Timer-On function.

Learners study the method of cascading two or more PLC timers to extend their time capacity.

Learners examine how a PLC Timer-Off instruction is used in the operation of an automotive paint booth.

This animated lesson shows the operation of timer-on and timer-off delay relays used in ladder circuit operate.

This animated lesson shows how a ladder circuit uses timer-on delays to cause an extrusion machine to operate.