PLC Simulator, PLC Trainer

This PLC (Programmable Logic Controller) app is designed to
simulate HOW a PLC works and is not programmable. It is
designed to help people better understand the exam-off
instruction -[/]- and the "Seal-In" logic, such as a motor start/stop
circuit. This app has two push buttons, three rungs of logic
consisting of two outputs and a timer.

The first rung consist of "Start/Stop" logic and shows how the
PLC exam-on instruction -[ ]- O:0/0 seals around the start button
PB 1 which is connected to input I:0/0, The output O:0/0 is kept
true, even after the start button PB 1 input goes back to false
because of the "Seal-In" instruction -[ ]- O:0/0. When the stop
button PB 2 (connected to input I:0/1) is pressed, and the
output O:0/0 immediately goes false and shuts off Motor 1.

The second rung consist of a "Timer" and shows that the logic in front of the timer must become true, before the Timer can start
timing and the Timer Enable Output -(EN)- becomes true. After
the timing starts and the Accum value equals the Preset,
the -(DN)- instruction becomes true.

The third rung consist of an output controlled by the timer DN
instruction. The -(DN)- output controls instruction T4:0/DN.
When T4:0/DN becomes true, the output O:0/1 turns on.

These are the most basic and common types of logic used in
PLCs and forms a good foundation for PLC learning.

Enjoy the fast growing world of PLCs.

My daughter found it very useful for her Mechatronics class.

Try it, you will like it.