MODBUS is a communication protocol over a variety of networks such as RS232 and Ethernet which was designed by Modicon.
It has been used widely since last several ten years and FreeMODBUS is a free implementation of this popular MODBUS protocol.
Recently I wanted to have a tool to share data between some embedded devices over serial connection or ethernet and heard MODBUS can be a starting point for such purpose. So this is the outcome.
This MBServer ( a sample MODBUS TCP server) supports Qt5 but for now no GUI. Later I will put some GUI on it to talk with devices which can support MODBUS. For someone with interests on this can find source tree in the following link.
https://github.com/seetime/freeMBServer/
How to build:
You need to have Cmake to generate Visual studio C++ project file.
First download source file and enter the root folder
cd <MBServer_root_dir>
mkdir build
cd build
cmake ..
With the project file generated, open it in Visual studio IDE and build and run.
For test, I used a MODBUS Diagnostick tool such as Modsak.
Conclusion.
If someone need to develop application to talk with remote device over serial or Ethernet, MODBUS can be a option for such. This post could be helpful for someone searching or wanting to develop a basic MODBUS server tool.
