PLC Programming, Ladder Logic & Controls Engineering

Master PLC Programming, One Rung At A Time

Ladder logic, wiring and troubleshooting guides for Siemens, Rockwell, Omron, Mitsubishi, Beckhoff and CODESYS, written by engineers who have commissioned the panel. Worked examples open in a browser PLC running a real scan engine, so you can force an input, watch a seal-in hold and time a TON out before you ever stand in front of live gear.

Browse ArticlesRun a Live Rung
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200+

Tutorials Published

9+

PLC Brands Covered

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Monthly Readers

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3 easy steps

How PLCDocs Works

A simple path from curious beginner to confident PLC programmer. Pick a topic, follow the tutorial, and apply what you learn on real hardware or simulators.

Pick A Topic

Browse tutorials by PLC brand, programming language, or skill level find exactly what you need to learn next.

Follow Clear, Practical Tutorials

Step-by-step guides with ladder logic, structured text, and wiring diagrams written by engineers, for engineers.

Apply It On Real Hardware

Take what you learned to your workbench, simulator, or shop floor and start solving real automation problems.