📖 Overview

This project demonstrates the convergence of IT (Linux) and OT (Industrial Control) by transforming a high-performance Raspberry Pi 5 into a PLC.

Using the CODESYS Control Runtime, this system executes real-time logic for sensor data processing and provides a web-based Human-Machine Interface (HMI) for operator control.

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💡 Architecture Concept: The "All-in-One" Edge Controller

Traditionally, industrial automation requires two separate hardware devices: a PLC for logic and a dedicated HMI panel for visualization.

This project demonstrates the modern PC-based automation approach (similar to Beckhoff CX or WAGO PFC architectures), where a single multicore processor handles both tasks:

• Core Logic: The CODESYS Runtime executes IEC 61131-3 logic in real-time.
• Visualization: The WebVisu server hosts the HMI, accessible via any HTML5-compliant browser (tablets, phones, desktops).

By virtualizing these functions on a Raspberry Pi 5, we achieve a high-performance, cost-effective Industrial Edge Controller that bridges the gap between IT and OT.

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📸 Visualization Preview

Figure 1: Real-time WebVisu HMI controlling logic on the Raspberry Pi.

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✨ Key Features

• 🧠 Structured Logic: Implements Sensor_Data.project using Structured Text (ST) to simulate and process analog signal data.
• 📊 Integrated HMI: Features a WebVisu dashboard accessible via any browser on the local network.
• ⚡ High-Performance: Leverages the Raspberry Pi 5 (16GB RAM).

🛠️ Hardware & Software Stack

Category	Specification
Controller	Raspberry Pi 5 (16GB RAM)
OS	Raspberry Pi OS (Debian Bookworm)
IDE	CODESYS Development System V3.5
Runtime	CODESYS Control for Raspberry Pi SL

🚀 How to Run

1. Prerequisites

Ensure you have the CODESYS Development System installed on your PC. You also need to install the Raspberry Pi package:

• Open CODESYS Installer.
• Search for and install: "CODESYS Control for Raspberry Pi SL".

2. Deployment

1. Clone this repository:

   https://github.com/FlameAutomation/CODESYS-for-Raspberry-Pi-PLC.git

2. Open src/Sensor_Data.project in CODESYS.
3. Update Gateway: Double-click the "Device" node and scan for your Pi's IP address.
4. Login & Download: Press Alt+F8 to login and load the runtime.
5. Start: Press F5 to run the PLC.

3. Access HMI

Open your web browser and navigate to:

http://<YOUR_PI_IP>:8080/webvisu.htm