

Modbus Workbench
Free offline desktop tool for Modbus RTU and TCP testing, provides live polling, direct writing, raw traffic logging with export options, and a built-in slave simulator. Supports multiple languages, multi-platform use, and parallel device monitoring.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Windows
Features
- Dark Mode
- Portable
- Multiple languages
- Serial-port
- Modbus
Modbus Workbench News & Activities
Recent activities
YEH-CHUN-LIANG added Modbus Workbench as alternative to Modbus Logger- K_Haku updated Modbus Workbench
- Maoholguin updated Modbus Workbench
- K_Haku added Modbus Workbench
K_Haku added Modbus Workbench as alternative to ModPackQT, CoreBus, ModbusScope and ModScan
Modbus Workbench information
What is Modbus Workbench?
Modbus Workbench is a free desktop tool for commissioning and diagnosing devices. It polls FC01–04 across multiple tabs at different intervals and writes with FC05/06/15/16 directly from the grid.
It records raw TX/RX frames with timestamps and saves them in .txt format, useful for diagnosing unresponsive devices. It includes a slave simulator for testing without hardware, over Modbus TCP or an RTU COM port.
It operates offline, is open-source under the MIT License, and available in English, Korean, Japanese, German, and Simplified Chinese.







