🐍 ModbusSniffer – Free Modbus RTU Analyzer with GUI (Python / PyQt6)
A lightweight and user-friendly Modbus RTU sniffer tool with a graphical interface.
Easily analyze and debug communication between PLCs, HMIs, and other Modbus RTU devices via serial ports.
🔧 Features
- 🧰 Sniffs raw Modbus RTU frames from serial ports (RS-485, USB)
- 🖥️ GUI interface built with PyQt6
- 📋 Frame table: Real-time decoded Modbus traffic
- 🌈 Color-coded logging of request–response frames
- 🪟 Cross-platform: Windows & Linux
- 🆓 MIT licensed, open-source
📦 Installation
Install directly from PyPI:
pip install modbus-sniffer
or download Binary files for Ubuntu and Windows from here.
You can also build and install app from sourcess. Click here for deatails about it.
▶️ Usage
🎛️ Run GUI:
modbus-sniffer-gui
🖥️ Run CLI:
To list all options:
modbus-sniffer -h
Example of runnig sniffer on ttyUSB0 with baud 115200 and no parity:
modbus-sniffer -p /dev/ttyUSB0 -b 115200 -r none
For more usage options, development guide, and installation from source, visit the GitHub repository:
🤝 Contributing
Please see CONTRIBUTING.md for development setup and contribution guidelines.
📜 License
MIT License — see the LICENSE file for details.
This project is a fork of BADAndrea ModbusSniffer, maintained by niwciu with enhancements described above.
1 maintainer
Metadata
1 maintainer
Release files for modbus-sniffer 1.0.3
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| modbus_sniffer-1.0.3.tar.gz | 24.4 kB | Without provenance | Details for modbus_sniffer-1.0.3.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| modbus_sniffer-1.0.3-py3-none-any.whl | Python 3 | none | any | Details for modbus_sniffer-1.0.3-py3-none-any.whl |
Total release size: 43.0 kB
Release files / modbus_sniffer-1.0.3.tar.gz
| Download URL | modbus_sniffer-1.0.3.tar.gz |
|---|---|
| Size | 24.4 kB |
| Tags | Source |
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Release files / modbus_sniffer-1.0.3-py3-none-any.whl
| Download URL | modbus_sniffer-1.0.3-py3-none-any.whl |
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| Size | 18.5 kB |
| Tags | Python 3 |
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