The way of ladder diagram analysis for small compact programmable controller

Abstract

eh@boss.iele.polsl.gliwice.pl , . . ' $ 1 I . '.' ' I .Abstract-. The paper presents the consideratibns relating to the ways of analysis of laddei diagram'created~for small programmable controller (PLC) compact.type which is equipped with simple keyboard for entry of such diagram. Because of the fact that compact PLC was built with using'of standard microcontroller which calculation i)ower is small the authors met difficulties with translation of the control program to the binary code. It was necessary to make decision that a ladder diagram will be not compiled but interpreted during program execution. The method of column by column analysis of ladder diagram was chosen as the most effective. The particular application of this method for small compact PLC is presented in details in the paper.. , .~

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