Beckhoff CX210000x4 Manual do Utilizador descarregar pdf (Página 22)

Productoverview

(*getnaviswitch*)

eNaviSwitchCx2:=F_CXNaviSwitchUSB(Taster);

ThebuttoncanbeaccessedfromthePLCprogramthroughthebuttonvariable.AsimpleCASEstatement

canthenbeusedtoevaluatetheswitch,andthedesiredfunctioncanbeinitiated,e.g.:

CASETasterOF

4:ACTION:=UP;

8:ACTION:=DOWN;

16:ACTION:=LEFT;

32:ACTION:=RIGHT;

64:ACTION:=SELECT;

END_CASE;

Inthiscase,"ACTION"isanewlydefinedENUMtype.Itisalsopossibleforthedesiredactiontobe

activatedimmediately.

Thesumofthenumericalvaluesisusedforthecombinedfunctions.Inotherwords,UP(4)andRIGHT(32)

wouldbe4+32=36.Valuesare:{UP(4),DOWN(8),LEFT(16),RIGHT(32)andENTER(64)}.Inthisway

onlyusefulcombinationsarepossible.

CX210000x422 Version1.0

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Beckhoff CX2100­00x4 Manual do Utilizador Página 22