PLC Visual Learning Studio

The complete PLC learning environment — built for engineers, technicians, and students.
PLC Engineering Lab is a structured, hands-on reference app covering Programmable Logic Controllers from first principles through advanced industrial applications. Whether you're studying for a certification, transitioning into automation, or need a fast reference on the job, this app has you covered.
LEARN — Structured Curriculum
Six courses, multiple modules, and step-by-step lessons covering every major PLC topic: system architecture, hardware, I/O wiring, all five IEC 61131-3 programming languages (Ladder Logic, Structured Text, Function Block, Sequential Function Chart, and Instruction List), PID control, industrial networking, SCADA, safety systems, and Industry 4.0.
• Progress tracking with completion badges
• Bookmarks to save your place
• Built-in quizzes to test your knowledge
• Estimated read times per lesson
CODE SANDBOX — Live Editor + Simulation
Write and simulate PLC code directly on your device using a full CodeMirror syntax-highlighted editor. Switch between Ladder Logic, Structured Text, Function Block, and Sequential Function Chart with one tap.
• Live simulation panel shows real I/O logic in action
• Motor Start/Stop latch with toggle inputs and LED outputs
• Traffic light state machine with variable watch
• SR flip-flop simulation for Function Block
• Step-by-step SFC machine sequencer
• Load built-in examples or write your own
PROJECTS — Interactive Diagrams
Five real-world engineering projects, each with an interactive SwiftUI system diagram, step-by-step build guide, and full code in all three text languages.
• 3-Zone Conveyor Belt with zone interlocks
• 4-Phase Traffic Light Controller
• Tank Level PID Control Loop (with live slider)
• Packaging Line Shift-Register Sorter
• HVAC Air Handling Unit — 8-Zone Control
ILLUSTRATIONS — Visual Reference Gallery
19 full-screen, pinch-to-zoom diagrams covering the entire PLC knowledge domain — organized in a logical learning sequence.
• PLC control system architecture diagrams
• Hardware block diagrams and I/O wiring
• Ladder Logic and Structured Text code walkthroughs
• P&ID schematics for conveyor, tank, HVAC, and traffic systems
• SCADA architecture, network topologies, Modbus/Profinet
• Safety circuit diagrams, SIL levels, IIoT, and digital twins
REFERENCE — Searchable Quick-Look
A filterable reference library covering contacts & coils, timers & counters, math & comparison, data & move, control flow, function blocks, and a full PLC glossary — across all four IEC languages.
GUIDE — Language & Vendor Cheat Sheet
Quick-reference cards for every IEC 61131-3 language with vendor notes for Allen-Bradley (Studio 5000), Siemens (TIA Portal), Codesys, Schneider, and Omron.
Designed for iPhone and iPad. Optimized for portrait and landscape. No subscription. No ads.