Beginner 07 — Latched Start/Stop (SET/RESET)

Briefing

Add a STOP to the previous scenario. Pulse START, LIGHT latches on. Pulse STOP, LIGHT resets off. Pulse START again, it comes back on. Two rungs: one SET, one RESET. That's the pattern behind nearly every industrial start/stop circuit you'll ever read.

Objectives

• Pulse START → LIGHT on
• Pulse STOP → LIGHT off
• Pulse START again → LIGHT on again

I/O Table

Your program will be tested against:

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

1. #1Pulse STOP → LIGHT off

   STOP resets LIGHT after a START latch

2. #2Pulse START → LIGHT on

   A momentary START sets LIGHT and it stays on after release

3. #3Restart after stop → LIGHT on again

   After a stop, a new START pulse re-latches LIGHT