abb dcs 系统 培训课程 系列讲座accessibility

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1、CourseT530Chapter23Accessibility23.1GeneralInformation23.1.1DescriptionThischapterdescribeshowtocontroltheaccessibilityofthesystem,usingprivilegehandling,hidden/protectedcodeandlicensing.23.1.2ObjectivesOncompletionofthischapteryouwillbeableto:·Applytheprivile

2、gehandling.·Applyhidden/protectedcode.·Describethemethodandwhenitissuitabletousethisfeature.·Discussthelicensingofthesystem.23.1.3ReferenceDocumentationUsetheonlinehelp:Contentstab,Maintenance23.23BSE022878/A2000/12/516:48:0023-9CourseT530Lesson1-Privilegehand

3、ling23.1.1DescriptionThischapterdescribeshowtocontroltheaccessibilityofthesystem,usingprivilegehandling.23.1.2ObjectivesOncompletionofthislessonyouwillbeableto:·Applytheprivilegehandling.23.1.3GeneralTorestrictuseraccesstodifferentsystemfunctions,differentuser

4、scanbeassigneddifferentprivileges.EveryusermustbegivenanameandbeassociatedwithaUserclass.ForeachUserclass,asetofprivilegesisdefined.OnlyoneusercanbeloggedinatanyonetimetobecometheCurrentuser.TheprivilegesdefinedfortheUserclassofthecurrentuserdecidewhichoperati

5、onsarepermitted.23.1.4Methodforloginandlogoutofuser·Tologinselect(Tools>LogIn)fromthemenuintheProjectExplorer.·Tologoutselect(Tools>Logout).23.1.4.1ShowcurrentuserSelect(Tools>ShowCurrentUser)andyougetinformationaboutthecurrentUserandtheuserprivileges.3BSE0228

6、78/A2000/12/516:48:0023-9CourseT53023.1.1MethodforPrivilegehandlingItispossibletocreateownUserClassesandUserswithspecificprivileges.ItispossibletoprotecttheUserwithapassword.TheUsernameandpasswordarenotallowedtobethesame.Select(Tools>Setup>Privileges)tocreatea

7、NewUserorUserClass.Possibleprivilegesettingsinthefigurebelow.23.1.1.1UserclassesAmaximumof50userclassesarepermitted,eachwithauniquename,withthesamerestrictionsthatapplytousernames.ForeachUserclass,itsprivilegesareselectedfromtheavailablesystemanduserdefinedpri

8、vileges.AlogouttimeisalsoassociatedwiththeUserclass.3BSE022878/A2000/12/516:48:0023-9CourseT53023.1.1.1UsersAmaximumof200differentusersmaybedefined.Eachuserhasauniquename,1-20chara