Implementation of Codesys Programming Using Raspberry-Pi for Weighing Machine Control

This paper demonstrates Raspberry-Pi microcontroller can be used to replace Programmable Logic Controller (PLC), which is installed in the automation industry for weighing machine control. Weighing machine Controller, is an application for automatic packaging of food products such as seeds, grains, nuts, etc. The weighing machine controller includes a PLC application that calculates the weight and controls the filling of the machine. PLC weighing machine control application usually uses the Allen Bradley 5000 PLC, but this project implements the same functional program in the CODESYS programming environment on Raspberry Pi. In this project Raspberry-pi is programmed with Ladder Logic programming using CODESYS environment. Load Cell Transmitter transmits the data continuously to the Raspberry-pi which enhances and resolves the identified issues and improves the application reliability. The result of the project is a functional and reliable solution that has been developed to be able to use the Raspberry Pi to control the weighing machine device instead of the Allen Bradley PLC. The developed solution allows for a significant increase in profitability, user-friendly, and tool flexibility. It is concluded that Raspberry Pi can replace PLC’s that is used in industry for some industrial automation process.