PLC Visual Learning Studio

Open the workbench, tap a contact, watch the coil energize. PLC ladder logic, structured text, and the scan cycle — finally visualized

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.