PLC-Course

Sprint 5 — Timers, Counters, Shift Registers, Sequencers, Data Handling

Bolton chapters: 7–12 Time budget: 7–9 hours Core concept: Real-world automation is mostly about time and count — internal relays, timers, and counters turn instantaneous Boolean logic into stateful machines that remember, delay, and sequence.

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🎯 Sprint Goals

• Use TON, TOF, TP, and retentive timers correctly
• Use CTU, CTD, CTUD counters
• Build a shift register for tracking parts on a conveyor
• Use jumps, calls, and subroutines without creating scan-time hazards
• Move and compare data with MOV, GT, LT, EQ, and the basic math instructions

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📚 Bolton Reading

Chapter	Topic
7	Internal relays
8	Jump and call
9	Timers
10	Counters
11	Shift registers
12	Data handling

This is the longest reading load in the course. Pace it across the whole week.

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🗂️ Materials

• 📄 Cheat sheet
• ⏱️ Timer / Counter Playground — TON, TOF, TP, CTU side-by-side in the browser
• 🧮 Workbook
• 🧪 Lab 03: Tank Fill/Drain
• 🧪 Lab 04: Batch Mixer

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📋 Sprint Plan

Day 1 — Read Ch. 7 + 9. Open Timer/Counter Playground. Build a TON, then chain two TONs for a flasher. Day 2 — Read Ch. 10. Build CTU and CTUD examples. Make a parts counter that resets each shift. Day 3 — Read Ch. 8 + 11. Build a shift register conveyor model. Day 4 — Read Ch. 12. Workbook: implement temperature scaling (RTD raw → °C) in ST. Day 5 — Lab 03 (tank) and Lab 04 (batch mixer). Submit both PRs.

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✅ Definition of Done

• Bolton Ch. 7–12 read
• Timer/Counter Playground used for ≥4 scenarios
• Workbook completed
• Lab 03 + Lab 04 submitted (auto-grader green)
• Flashcards reviewed

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