ABB DCS 系统 培训课程 系列讲座 Basic HW Config.docx

ABB DCS 系统 培训课程 系列讲座 Basic HW Config.docx

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ABBDCS系统培训课程系列讲座BasicHWConfig

Chapter15BasicHWConfigurationandI/OConnection

15.1GeneralInformation

15.1.1Description

Thischapterdescribeshowtoconfigurethebasichardware,howtoconnecttoI/OandhowtohandleI/Oon-line.

15.1.2Objectives

Oncompletionofthischapteryouwillbeableto:

∙ConfigureabasichardwareinordertoconnecttoI/O.

∙Describehowthehierarchicaldotnotationworks.

∙Describethedifferencebetweenthealloweddatatypesandwhentousethem.

∙ConnectvariablestoI/O.

∙On-linehandlingofI/O.

15.1.3ReferenceDocumentation

Usetheonlinehelp:

Contentstab,HardwareConfiguration

Usetheonlinehelp:

Contentstab,I/OConfiguration

15.2

Lesson1–BasicHardwareConfiguration

15.2.1Description

Thislessondescribeshowtoconfigureabasichardware.

15.2.2Objectives

Oncompletionofthislessonyouwillbeableto:

∙DescribehowtosetupabasichardwareconfigurationinordertoconnecttoI/O.

∙Describehowthehierarchicaldotnotationworks.

15.2.3InsertingI/Ounitsinthehardwareconfiguration

HardwareunitsareaddedtothetreestructureintheProjectExplorerrepresentphysicalhardwareunits.Someunitscontainsubunits,suchasserialchannels,thatareautomaticallycreated.Belowisanexampleofahardwareconfiguration.

15.2.3.1

AddingHardwareUnits

ToaddanewhardwareunittothehardwaretreestructureintheProjectExplorer,proceedasfollows:

∙Selecttheunittowhichyouwanttoaddthenewhardwareunit.

∙Withthenewunitselected,right-clickontheunitandselectNewunit.Asubmenulistingpossiblehardwareisdisplayed.Selectthetypeofhardwareyouwishtoadd.IfNewunitisdimmedtheunityouhaveselectedinstep1maynotcontainanysubunits,orthemaximumnumberofsubunitshasbeenreached.

∙Selectapositionforthehardwareunitinthedialogboxdisplayed.Thefirstavailablepositionischosenbydefault.Ifanotherpositionisdesired,clickthelistboxtodisplayavailablepositions.ClickOK.

∙Thehardwareunitisnowaddedtothetree,andthenameofthehardwareunit,aswellasitsposition,isdisplayednexttotheiconofthehardwareunit.Theiconslookdifferentdependingonwhichtypeofunitwasadded.

15.2.3.2Hierarchicaldotnotation

Thehardwareaddressofahardwareunitiscomposedfromthehardwaretreepositionnumbersoftheunitanditsparentunits,describedfromlefttorightandseparatedbydots.

Forexamplechannel1ontheI/OunitDO810havetheaddressController_1.0.11.1.1.

15.3Exercise15.1–AbasichardwareConfiguration

Pleasedoexercise15.1

15.4

Lesson2–I/OConnectionandOn-linehandlingofI/O

15.4.1Description

ThislessondescribeshowtoconnecttoI/Oandon-linehandlingofI/O.

15.4.2Objectives

Oncompletionofthislessonyouwillbeableto:

∙DescribethedifferentwaystoconnecttoI/O.

∙Describethedifferencebetweenthealloweddatatypesandwhentousethem.

∙MakeanI/Oconnectionintwoways.

15.4.3Connection

UsetheconnectionstabofthehardwareconfigurationeditortomakeconnectionsbetweenvariablesandI/Ochannelsorotherhardwarechannels.AllI/OaccessiscarriedoutthroughavariableconnectedtoanI/Ochannel.

ConnectionscanbeeditedonlyinOfflinemode.Theconnectionstabisnotavailableforunitswithoutchannelstowhichyoucanconnectvariables.

Theconnectionstabcontainsagrid.TheheadingrowfeaturestheheadingsChannel,Name,Type,VariableandI/ODescription.Thereareasmanyrowsastherearechannelstowhichyoucanconnect.Adigitalunitcanalsobeconnectedtoallchannelsasadoubleword（dword）.

15.4.3.1AllowedDataTypes

VariablesconnectedtoI/Ocanbeofanyofthesimpledatatypesbool,dint,dwordorreal,oranyofthesystem-definedI/Odatatypes.

15.4.3.1.1BoolIO

ThedatatypeBoolIOhasthefollowingcomponents.

Name

Datatype

Description

Value

Bool

Valueusedbytheapplication.

IOValue

Bool

ValueoftheI/Ochannel.IOValueandValueareequalifthechannelisnotforced.

Forced

Bool

Specifieswhetherornotthechannelisforced.

15.4.3.1.2

RealIO

YoucanusetheRealIOdatatypeforvariablesconnectedtoI/O.TheValue,IOValue,ForcedandStatuscomponentsaregivenbythesystemtotheapplication.TheInverted,Max,Min,UnitandFractioncomponentsaregivenbytheuseroftheapplicationtothesystemintheScalingtab.Thedatatypehasthefollowingcomponents.

Name

Datatype

Description

Value

Real

Valueusedbytheapplication.

IOValue

Real

ValueoftheI/Ochannel.IOValueandValueareequalifthechannelisnotforced.

Forced

Bool

Specifieswhetherornotthechannelisforced.

Status

Dint

IfthechannelstatusisnotOK,Statuscantakeanyofthesevalues:

-4029Underflow

-4030Overflow

-4031UnitError

-4032ChannelError

Parameters

SignalPar

Measuringrange

ThedatatypeSignalParhasthefollowingcomponents.

Name

Datatype

Description

Max

Real

Maximumvaluetowhichyoucanscaleamaximuminputsignal.

Min

Real

Minimumvaluetowhichyoucanscaleaminimuminputsignal.

Inverted

Bool

SpecifiesiftheconnectiontotheanalogI/Oisreversed

（0mA->100%,20mA->0%）.

Fraction

Dint

Specifiesthenumberofdecimalstobedisplayed.

Unit

string

Displayunit.

15.4.3.1.3

DintIO

ThedatatypedintIOhasthefollowingcomponents.

Name

Datatype

Description

Value

dint

Valueusedbytheapplication.

IOValue

Dint

ValueoftheI/Ochannel.IOValueandValueareequalifthechannelisnotforced.

Forced

Bool

Specifieswhetherornotthechannelisforced.

15.4.3.1.4DwordIO

ThedatatypedintIOhasthefollowingcomponents.

Name

Datatype

Description

Value

dword

Valueusedbytheapplication.

IOValue

dword

ValueoftheI/Ochannel.IOValueandValueareequalifthechannelisnotforced.

Forced

Bool

Specifieswhetherornotthechannelisforced.

15.4.3.2FromanI/Ochanneltoavariable

ItisonlypossibletoconnectvariablestoaphysicalI/O,toconnectvariablestoI/Ounits,proceedasfollows:

Double-clickontheI/Ounit.

Awindowliketheonebelowwillbevisible.TheappearanceofthewindowisdifferentdependingofwhichI/Ounityouuse.

Right-clickinthevariablecolumnandchoose（Insert>Path,Attributefromlist…）or（Insert>PathfromTree…）.ItisalsopossibletousetheacceleratorsCtrl+JorCtrl+T.

Usethedotnotationfunctionorexpandthetreetoreachthewantedvariable.

15.4.3.3FromavariabletoanI/Ochannel

ItispossibletoconnectvariablestoI/OfromthePOUeditor,butisrecommendedtodoitfromtheI/Ounit,becauseyoucannotbrowsetothecorrectI/OaddressfromtheI/OaddresscolumninthePOUeditor.

15.4.4OnlinehandlingofI/O

15.4.4.1Status

Usethestatustabofthehardwareconfigurationeditor,inonlinemode,fordynamiconlinedisplayofI/Ochannelvaluesandforcing.I/Ochannelvaluesareupdatedonceeverysecond.ThetabisavailableinOfflinemode,butnoteditable.Thetabconsistsoffivecolumns:

Channel,Channelvalue,Forced,VariablevalueandVariable.

Underflow,overflow,channelanduniterrorsinonlinemodeareindicatedintheChannelvaluecellbythefollowingicons:

15.4.4.1.1Signalerrors

underflow

Thesignalisbelowtherange.

overflow

Thesignalisabovetherange.

15.4.4.1.2Hardwareerrors

channelerror

Thechannelcanhaveunderrange,power-uporfieldpowererrors.

Uniterror

Theunitcanbemissingorofthewrongtype.

15.4.4.2Forcing

ForcingofI/Oispossibleinonlinemode.YoucheckacheckboxintheForcedcolumnandthentypeinavalueintheChannelvaluecolumnforoutputsandtheinVariablevaluecolumnforinputs.Thisvalueoverridesthevaluesineachofthosecolumns.Thebackgroundoftheforcedcellchangestoyellowtoindicateforcing.ForcingisdeactivatedwhenyouremovethecheckfromtheForcedcheckboxofthechannelinquestion.

AllI/Ochannelsthatcanbeconnectedtoavariableinanapplicationcanalsobeforcedinonlinemode,exceptforchannelssuchasUnitStatusoneachI/OunitandAllUnitsStatusonthecurrentcontroller.ForcingisperformedinthehardwareconfigurationeditorundertheStatustaborthePOUeditor.ApplicationprogramsrequiringinformationaboutforcingandforcedvaluescanusethesystemdefinedI/OdatatypeswhenconnectingvariablestoI/Ochannels.TheI/OdatatypescontaintheIOValuesandForcedcomponents.TheForcedcomponentindicatesiftheI/Ochannelisforced.TheIOValuecomponentcontainsthevalueoftheI/Ochannel.

Normallyonlychannelswithvariableconnectionstoapplicationprogramscanbeforced.However,ifnovariableisconnectedyouhavetochangetheparameterCopyunconnectedchannelsundertheSettingstabforthecurrentcontrollertogetastatusupdate.TheI/OchannelsyoucanselecttocopyareNone,theInputsortheOutputsorboththeInputsandOutputs.Ifselected,thecopyingofunconnectedI/OchannelsaremadeonceasecondsotheirstatusareavailableintheStatustablikenormallyconnectedI/Ochannels.WhenachannelisforcedallcopyingbetweentheI/Ovalueandtheapplicationvalueceases.Theforcedvalueisdifferentforinputsandoutputs.Forinputstheforcingchangesthevariablevaluetotheapplication.ForoutputstheforcingchangesthephysicalI/Ochannelvalue.InthiswaytheapplicationcanseeboththeVariable（application）valueandtheChannel（I/O）value.

15.5Exercise15.2-ConnectionofI/O

Pleasedoexercise15.2

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