QModMaster – Modbus TCP,RTU Master Software.

QModMaster is a free Qt-based implementation of a ModBus master application. A graphical user interface allows easy communication with ModBus RTU and TCP slaves. QModMaster also includes a bus monitor for examining all traffic on the bus.

QModMaster is based on QModBus <http://sourceforge.net/projects/qmodbus/&gt; and libmodbus 3.0.1 <http://www.libmodbus.org/&gt;. Supports both Windows and Linux.

For Windows a pre-compiled binary is availiable. It does not require instalation, just unzip and run.

Source code is availiable for Windows and Linux for compilation using Qt <http://qt.nokia.com/products/&gt; (tested with Qt 4.7.4).


  • ModBus RTU/TCP Master
  • Monitor Bus activity
  • Supports both Windows and Linux

Download Latest Version : qModMaster_Win_0.3.2.zip (5.2 MB) 
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Read more in here : http://sourceforge.net/projects/qmodmaster