Desenvolvimento de um Controlador Lógico Programável com Interface de Programação Ladder via Aplicação Web Embarcada

Abstract

This work presents the development of a programmable logic controller prototype, which contains an embedded Ladder programming interface served by a web application. For this, the project was divided in three parts: the elaboration of a Ladder editor that works in web browsers and allows the creation of Ladder and its translation in bytecode; the design of a virtual machine that performs the generated bytecode, fulfilling the role of the CLP; and the interconnection of these two parts through a web server, which delivers the application to the browser, and communicates with the virtual machine, allowing download and upload of code, as well as the execution of start and stop commands. The prototype was implemented in a development board with ARM CortexM7 microcontroller, but the focus of the project is to keep the system independent of the platform used, applying concepts of portability.