Mark Gullings Consulting

MQModBus is an open source application designed to connect mobile devices to Modbus PLCs. It is based on QModBus, was originally designed for Android, and can be ported to any device that Qt has been ported to.

MQModBus is an open-source project I started to connect with Modbus devices on an Android phone. It was derived from the original source of QModBus using the libmodbus libraries. This video was taken in the design stage between v0.1 and v0.2. It is completely functional in this state with no known bugs. The differences between […]

This demonstrates using QModBus as a foundation to create a HMI screen. I used the code from QModBus and moved the functions to read values into the timer, which I set at 200msec so it had a decent scan rate without overloading the CPU. Next I made buttons to call functions to send values to […]