Beginner 01 — Switch turns on Light

Briefing

Your first PLC program is already built for you. When SWITCH is ON, LIGHT turns ON. When SWITCH is OFF, LIGHT turns OFF. That's it — one simple instruction. Press Check program to run it, then flip SWITCH on and watch LIGHT follow it. The ladder shows two pieces: a contact that reads SWITCH (it lets power through while SWITCH is on, which is what "normally open" means) and a coil that switches LIGHT on. In Structured Text the same program is one line: LIGHT := SWITCH;

Objectives

• When SWITCH is true, LIGHT turns on
• When SWITCH is false, LIGHT turns off

I/O Table

Your program will be tested against:

All test cases run automatically when you submit. Assertions are hidden until you pass.

1. #1SWITCH true → LIGHT on

   Closing the switch turns on the light

2. #2SWITCH false → LIGHT off

   Opening the switch turns off the light