资源描述：
《组态王n个经典问题解答（king view n classic questions）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、组态王n个经典问题解答（KingViewnclassicquestions）1.Whatisthemeaningofthemaximum(small)valueandthemaximum(small)originalvalueinthevariablesetting?[maximum(small)valueisvariableexpressionintherealengineeringvalue(suchastemperature,pressure)andmaximumsize(small)istheoriginalvaluec
2、ollectiondevices[Register]Digitalmaximum(small)values(suchasboard819-4095etc.).ThisvalueisgenerallyfordevicephysicalquantitybyADconversionvalueafter12BitAD,suchasthevaluerangeof0~4096,16BitAD0~65535,forPLC,intelligentinstrument,transducer,itsphysicalvalueintoengineer
3、ingvaluesothemaximum(minimum)valueandthemaximumvalueisconsistentwiththeoriginal(small)set.2.Whycan'tvariablesbedeletedandhowdoIdeletevariables?[inKingview,onlyunusedvariablescanbedeleted,sodeletingvariablesmustberemovedbefore,inthepictureorcommandlanguage,controlrefe
4、rence,etc.relatingtotheconnection,ifyoustillcannotdelete,implementationtools-updatethevariablecountcommandintheprojectbrowser,restatisticalvariablesinthevariablestheuseofthereportcanqueryvariablesisstillinsomeplaces,theconnectionisdisconnected,thetoolwillnotdeletedel
5、etevariableswithvariables.3、whentheprojectisrunning,thecommunicationprotocolcomponentfailed[devicedriverinstallationerror:1,installnewdrive2,inthedevelopmentstatefromthenewconnectiondevice,ifthereisstillerror,pleasecontactthedriverfornewdriver.]4,thetypicalcaseontheC
6、Dcannotbeopened?[copytheprojecttotheharddiskandchangethepropertytoarchive5,howtoopenthemachineautomaticallyenterthekingview?[copythetouchviewshortcuttosystemstartprogramstart6,howtomakeengineeringdocumentssmaller?[delete*.AL2(alarminformationfile),*.REC(historyfile
7、),*.111file(backupfileof*.picfile)files.7,howtoaddanddeleteusersanduserpasswordsandpermissions?[usetheeditusers()function(userpermissionsneedgreaterthan900)8,whendefiningthebasicattributesofavariable,whatdoyoumeanbysavingvaluesandsavingparametersinthestatusbar?[savep
8、arameters:whenthesystemisrunning,modifythevalueofthevariabledomain(readable,writable),thesystemautomaticallysavetheseparametervalue
