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what is a plc

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Flat vector diagram of a PLC controller rack showing CPU, I/O modules, power supply, and connections to sensors and actuators representing a complete PLC system
plc basicsplc programmingwhat is a plc

What Is a PLC Controller and How Does It Work?

Learn what a PLC controller is, how it executes logic in a repeating scan cycle, and how inputs, outputs, and memory work together to control real machines.

Jul 29, 2026 · 8 min read

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