Treffer: Graphical user interface for a PLC programming implemented in an ARM Cortex-M4 microcontroller.

This paper presents the design of a Programmable Logic Controller (PLC) using an ARM Cortex-M4 microcontroller, model STM32F407, which allows integrating the OS-Micropython operating system. To controlling the PLC hardware, the development of a graphical or visual type-programming interface is presented that is easy to use for the operator and incorporates power control functions, such as control of digital inputs/outputs, analog channels readings, timers and counters. The interface communicates with the PLC microcontroller through the UART serial protocol. The firmware microcontroller and the graphical interface were programmed in Python language. Two validation tests for the interface are presented, that probe the correct performance. This work is part of one of the stages of development of a clay sifter-lump-breaker-type machine, which will be operated by ceramic producers in the Cohuecan region in the state of Puebla, Mexico, where it is expected to automate the pottery process and influence the economic reactivation of the region. [ABSTRACT FROM AUTHOR]

El presente trabajo presenta el diseño de un controlador lógico programable (PLC) utilizando un microcontrolador ARM Cortex-M4, modelo STM32F407, el cual permite integrar el sistema operativo OS-Micropython. Para controlar el hardware del PLC se presenta el desarrollo de una interfaz para programación tipo gráfica o visual que sea de fácil uso para el operador e incorpore funciones de control de potencia, tales como control de entradas y salidas digitales, lectura de canales analógicos, temporizadores y contadores. La interfaz se comunica con el microcontrolador del PLC a través del protocolo UART. El firmware del microcontrolador y la interfaz gráfica se programaron en lenguaje Python. Se presentan dos pruebas de validación de la interfaz que comprueban el correcto desempeño. Este trabajo forma parte de una de las etapas de desarrollo de una máquina tipo desterronadorcernidor de arcilla, la cual será operada por los productores de cerámica de la región de Cohuecan en el estado de Puebla, en México, en donde se espera automatizar el proceso de alfarería de la comunidad e incidir en la reactivación económica de la región. [ABSTRACT FROM AUTHOR]

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