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.

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

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

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.

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.