Training Ladder Logic & IEC 61131-3 Programming

Ladder Logic & IEC 61131-3 Programming

Engineering
Advanced 120 minutes 2 lessons
PhD-level treatment of IEC 61131-3 programming languages for PLCs: Ladder Diagram (LD), Boolean algebra reduction via Karnaugh maps, Structured Text (ST), timer/counter function blocks, and formal verification of safety-critical logic using Boolean satisfiability and temporal logic.

Learning Objectives

  • Translate relay ladder diagrams into Boolean expressions and minimise them using Karnaugh maps and De Morgan theorems
  • Implement TON, TOF and CTU function blocks and design interlocked sequences with GRAFCET/SFC methodology
  • Write equivalent logic in Structured Text (ST) and Function Block Diagram (FBD) per IEC 61131-3
  • Verify ladder logic correctness using truth-table exhaustion and Boolean satisfiability (SAT) concepts
  • Design safety-rated (SIL-2) interlocks that satisfy EN 62061 requirements for redundancy and diagnostic coverage

Lessons

1
Ladder Logic — Boolean Algebra, Karnaugh Maps & Formal Verification
60 min
2
IEC 61131-3 Timers, Counters & Structured Text
60 min

Quick Practice

Test your knowledge with a quick interactive challenge from this module.

Loading…
Score: 0/0

Key Concept Flashcards

Loading…
1 / 1

Click the card to flip it