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QModBus - a free ModBus master application

About QModBus

QModBus is a free Qt-based implementation of a ModBus master application. A graphical user interface allows easy communication with ModBus slaves over serial line interface. QModBus also includes a bus monitor for examining all traffic on the bus.

QModBus originally has been developed by EDC Electronic Design Chemnitz GmbH and now is publicly available under the terms of the GPLv2.


You can obtain the latest source code at GitHub.

Source tarballs and binary packages for Windows can be downloaded at SourceForge.


Currently there's only one very basic screenshot - it does not show a real ModBus session with actual data.
QModBus screenshot

Technical details

More details regarding QModBus can be found on the Sourceforge project page of QModBus.


You can mail the author by sending a mail to tobias |dot| doerffel |at| gmail |dot| com.

Get QModBus at SourceForge.net. Fast, secure and Free Open Source software downloads