PLC Tutorial for Beginners: ENCO Encoding & Deco Decoding | Siemens S7-1200 Explained
In this beginner-friendly Siemens S7-1200 tutorial, we introduce two essential PLC instructions: ENCO (Encode) and Deco (Decode). These functions are used to convert data between binary values and position-based signals, which is especially useful for selector switches, control panels, and state machines.
🔍 What You’ll Learn:
What ENCO and Deco do in a PLC
How to use ENCO to convert multiple bits into an integer value
How to use Deco to decode an integer into a one-hot (single-bit active) signal
Practical examples using selector switches or control modes
Step-by-step implementation in TIA Portal
💡 These instructions are perfect for simplifying control logic and enhancing readability when working with HMI selections, mode switching, or bit pattern decoding.
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