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ConceptV2.6Lesson13Objectives:Aftercompletingthislesson,thelearnerwillbeableto:RecognizeIECDerivedDataTypesIdentifythetypesofDerivedDataTypesRecognizetheelementsoftheDataTypeEditorDistinguishbetweenGlobalandLocalDerivedDataTypesUseDerivedDataTypesinyourproject.
ConceptV2.6Example:DFB“M_Logic”needstosendthreesignalsofthedatatypeBOOLtoDFB“M_Alarm”
ConceptV2.6ArrayExampleDeclarationLogic3Values,
1Link
ConceptV2.6ArrayExampleCont’d
ConceptV2.6STRUCTExampleDFB“M_logic1`”needstosendtwosignalsofdifferentdatatypestoDFB“M_alarm1”
ConceptV2.6STRUCTExampleDeclarationLogic2Values,
1Link
ConceptV2.6STRUCTExample
ConceptV2.6ExampleofComplexDDTDeclarationLogic
ConceptV2.6 ExampleofComplexDDT
ConceptV2.6Filesusethe.dtyextensionCONCEPTsoftwaresupportsonlyonelocaldatatypefileforeachprojectfolder(project\dfb\*.dty)andonlyoneglobaldatatypefile(concept\dfb\*.dty)forallprojects.InordertoassureconsistencybetweenprogrammingunitandtheQuantumPLC,theprojectthatcontainsoneofthederiveddatatypesmustbereloadedintothePLCwheneveroneofthesefileshasbeenedited.
ConceptV2.6KeywordsTYPEEND_TYPEStart/EndofDatatypedefinitionSTRUCTEND_STRUCTStart/EndofDDT-ElementsARRAYSeveralelementsofsamedatatypeDatatypesNamesofdefinedDatatypes,conclusionwith;
ConceptV2.6SyntaxNamesofderiveddatatypesandelements,max.24characters,conclusionwithseparator:Separator:Endofname;Endofinstruction[]EmbracestherangeentryofthekeywordARRAY...SeparatesbeginningandendofrangeofthekeywordARRAYComment:(*atthebeginning,comments,attheend*)
ConceptV2.6CreatingtheDerivedDataTypeFileLocalGlobal
ConceptV2.6CreatingtheDerivedDataTypeFile
ConceptV2.6DeclaringvariableswithaDDTThenewDDTsareautomaticallyincludedintheVariableEditorunderdatatype.AssignmentofanelementofaMult
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