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RealizetheTableLookupFunctionbyUsingtheComplexDataTypeofSTEP7

  

  1. (FacultyofElectricalEngineering,KunmingMetallurgyCollege,Kunming650033,China)
  • Online:2014-07-11 Published:2014-07-11

Abstract: TheTableLookupfunctionisakindofveryusefuloperationinthealgorithmofautomaticcontrolsystem.InthePLCsystem,thereneedtheTableLookupfunctiontorealizefuzzycontrol,expertsystemandotheradvancedcontrolmethods.ButatpresentmostofthePLCdoesnotprovideareadymadelookuptablecommand,realizethelookuptableprocedureismoretroublesomeandineffective.Inthispaper,weusethecomplexdatatypeandthecomplexparametertypeofSTEP7torealizetheTableLookupfunctioninthesSiemensS7seriesPLC.

Key words: STEP7, complexdatatype, tablelookupfunction, fuzzycontrol

CLC Number: