Aplicação de conceitos da norma IEC 61131-3 na otimização de blocos de funções na programação de CLP

Abstract

The automatization of production lines in industries is, in general, made through programmable logic controllers (PLCs). The main manufacturers of this kind of devices allows the grouping of some code sections in function block diagrams (FBD), to allow the reuse in others projects. However, when aspects of automation undergo changes in the industries and the blocks do not follow this trend, valuable efforts are applied on repetitive tasks that could be avoided by updating blocks. Thus, this work aims to optimize some function block diagrams used by a coffee processing industry, to reduce the time applied in the development of systems, with no loss of safety aspects. The theoretical basis was the IEC 61131-3 standard, with a review of the main concepts related to function block diagrams. Were taken for analysis 2 main blocks of devices and the results of the optimization were presented.