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Cordex®CXCHPControllerSoftwareManual|22-Usingcustomviews,data,timers,counters,scheduler,andcustomactions

Astatevariablecomparesthelivevalueofastatefieldtouptofourofitspossiblevalues.Thepossible

valuesarecalled“TrueIf”valuessincethestatevariablewillevaluatetoTrueifthestatefieldmatches

anyofthepossiblevalues.

Notice: State variables will always evaluate to True or False. A state variable should always be

used with a value that represents a state. Numeric values should not be used when creating a

state variable.

Tipsonusingvariables:

•

Thekeywords“True”and“False”canalsobeusedinanequation.Theyaretreatedasbuilt-in

variablesthatrepresentthevalueofoneandzero.

•

VariablesarecreatedwithinthecontextofasingleuniqueinstanceofCustom Data.Avariable

createdforuseinaspecificCustom Data equationcannotbereusedinanotherequation.

•

Variablenamesmustadheretoaspecificformat.Thenamemuststartwithaletter,followed

byletters,digitsorunderscores.Somevalidnamesare“T1”,“T_1”,“Vbat”,“BatteryCurrent”,

“Load_2_Current”.

•

Shortbutmeaningfulnamesofferthebestreadabilitywhenusedinanequation.

OnceaCustom Data hasbeencreateditcanbeusedthroughoutthecontrollerandsystemsasinputto

variousconfigurations.

Forexample,inaUser Alarm allCustom Data equationsaredisplayedintheselectionlistoftheSource

field.YoucanusethisCustom Data toalarmandcontrolrelaysbasedonanycustomparameters

required.

Anotherexampleisconfigurationforaload.TheLoad Current Source fielddisplaysallCustom Data so

youcansummultiplecurrentstorepresenttheloadcurrent.

Generally,anySource fieldthatallowsyouselectinputswillalsoprovideallCustom Data asanoption.

Functions

Therearethreesupportedfunctions:abs(),sqrt(),power().Theabs()andsqrt()acceptasingleinput

parameter,andthepower()acceptstwoparameters.Forthepower()function,thefirstparameteristhe

baseandthesecondparameteristheexponent.Forexample,power(2,3)wouldevaluateto8.

22.2.1.1. Showing the result as text

Customdataequationsnormallyrepresentanumericalorboolean(true/false)value.Attimesthough,it

maybeconvenienttodisplaythosevaluesonthedashboardastext;thiscanbeespeciallyusefulifthe

customdatarepresentsasystemstate.Forexample,anairconditionermaybeOff,Cooling,orError.

TheResult as Text entryintheConfiguration tableusestheentriesintheText Mapping tabletomap

theresultasnumericortheresultasbooleantomeaningfultext.

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EnerSys Alpha Cordex CXC HP User Manual

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