DownloadQModMaster 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 libmodbus <http://www.libmodbus.org/> for modbus communication and on QsLog <https://bitbucket.org/codeimproved/qslog> for logging. Supports both Windows and Linux.
For Windows a pre-compiled binary is availiable. It does not require instalation, just unzip and run.
You can download the latest stable version from here <https://sourceforge.net/projects/qmodmaster/files/qModMaster-Win32-exe-0.5.2-3.zip/download>.
Source code is availiable for Windows and Linux for compilation using Qt <http://www.qt.io/download>.
Check out my modbus slave project <http://sourceforge.net/projects/pymodslave/>.
Checkout the following youtube videos :
<https://www.youtube.com/channel/UC3Tk2gE-KGtwOq8WWmb2R7g>
Features
- ModBus RTU/TCP Master
- Monitor Bus activity [Raw Data and PDU details]
- Supports both Windows and Linux
Project Samples
License
GNU Library or Lesser General Public License version 3.0 (LGPLv3)Follow QModMaster
User Reviews
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No able to open comport other than default com port provided in application. I tried to give COM9, COM10, COM11 and it always ends up in error such as INFO 2017-06-03T20:41:51.322 ..\qModMaster\src\modbusadapter.cpp @ 39 "Connecting to Serial Port [COM10]..." ERROR 2017-06-03T20:41:51.322 ..\qModMaster\src\modbusadapter.cpp @ 50 Connection failed. Could not connect to serial port INFO 2017-06-03T20:41:51.322 ..\qModMaster\src\rawdatamodel.cpp @ 17 Raw Data Model Line = "Sys > 20:41:51:322 - Connecting to Serial Port [COM10]...Failed" , No of lines = 1 INFO 2017-06-03T20:42:30.593 ..\qModMaster\src\modbusadapter.cpp @ 39 "Connecting to Serial Port [COM10:]..." ERROR 2017-06-03T20:42:30.593 ..\qModMaster\src\modbusadapter.cpp @ 50 Connection failed. Could not connect to serial port INFO 2017-06-03T20:42:30.593 ..\qModMaster\src\rawdatamodel.cpp @ 17 Raw Data Model Line = "Sys > 20:42:30:593 - Connecting to Serial Port [COM10:]...Failed" , No of lines = 5
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Sadly, the Windows GUI is unusable on a high-dpi display. Enabling and disabling scaling have no effect -- the controls are scaled properly, but are presumably positioned with hardcoded pixel counts -- they are too close together and can't be read. No obvious way to alert the developer.