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PLC Programming Articles
Explore the latest PLC Programming tutorials
How to Build a PLC Timer Loop Sequence
This is a full build-along tutorial that goes beyond the Bob Teaches Tech YouTube video. It covers the hardware, wiring, GX Works2 project setup, and explains each step of an…
What Is SCADA? Architecture, Components, and How It Works
SCADA lets a single operator monitor and control equipment spread across an entire plant, pipeline, or utility network — here's what the acronym actually means, the five components every system…
Structured Text Programming for PLCs: A Practical Introduction
Structured text (ST) is the IEC 61131-3 language that feels most familiar to anyone with a Pascal or C background - and it's becoming the go-to choice for sequencing, math-heavy,…
Modbus Register Types Explained: Coils, Discrete Inputs, Holding Registers
Modbus register types explained: coils, discrete inputs, holding and input registers, function codes, and addressing conventions.
PLC Data Types Explained: BOOL, INT, REAL, and Structures
PLC data types explained: BOOL, INT, DINT, REAL, arrays, and structures-with a real scaling bug example and vendor comparison.
PLC Counters Explained: CTU, CTD, and CTUD with Ladder Examples
Learn PLC counter instructions (CTU, CTD, CTUD) with tested ladder logic examples, reset logic, and common beginner mistakes explained.
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