CODESYS example: TrafficLight-Webvisu

Introduction

This tutorial demonstrates how to create a simple web visualization of traffic lights on the RevPi Connect using CODESYS WebVisu.

Tipp: For detailed instructions about how to set up your system, refer to the Getting Started guide.

note: To ensure a compatible system with suitable software, please refer the following links:

The application simulates a traffic light system with the following modes:

Normal Mode:
- Red and green lights are active for 10 seconds each.
- Yellow light acts as a transition for 2 seconds.
Night Mode:
- Only the yellow light flashes in this mode.

The following figure provides an overview of the CODESYS device tree for the setup:

CODESYS Device Tree Overview

Adapting for RevPi Core or Compact

To adapt the project for RevPi Core or RevPi Compact:

▷ Right-click on RevPi Connect in the CODESYS device tree.

▷ Select Update device.

▷ Choose RevPi Core or RevPi Compact as the replacement and rename the device accordingly.

Compile and Download:
- Ensure there are no errors in your program.
- Download the application to the RevPi Connect.
Access the Web Visualization:
- Open a browser and navigate to your RevPi Connect’s web server:
```
http://<RevPi-IP-Address>:8080/webvisu.htm
```
- Example: http://192.168.168.159:8080/webvisu.htm.

Adapting for RevPi Core or Compact

Test the Traffic Light:
- Verify normal mode operation with the specified durations.
- Toggle the night mode switch and observe the yellow light flashing.

Ensure your RevPi Connect and DIO modules are properly connected and configured in the CODESYS device tree.
The visualization design can be customized to include additional controls or indicators as needed.