Lenze PLC Designer PLC Designer (R2-x) Manual de usuario descargar pdf (Pagina 81)

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101

L-force | PLC Designer

We Write a Little Program

 DMS 3.2 EN 02/2011 TD29 79

5.1.8 "TRAFFICSIGNAL" declaration

Let us now turn to the POU TRAFFICSIGNAL. In the declaration editor you declare as

input variable (between the keywords VAR_INPUT and END_VAR) a variable named

STATUS of the type INT. STATUS will have four possible conditions, that is one for the

TRAFFICSIGNAL phases green, yellow, yellow/red andred.

Correspondingly our TRAFFICSIGNAL has three outputs, that is RED, YELLOW and

GREEN. You should declare these three variables. Then the declaration part of our

function block TRAFFICSIGNAL will look like this:

Function block TRAFFICSIGNAL, declaration part

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Lenze PLC Designer PLC Designer (R2-x) Manual de usuario Pagina 81

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