Campbell-scientific CR1000 Measurement and Control System Manual de usuario descargar pdf (Pagina 475)

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Appendix A. CRBasic Programming Instructions

475

ReadOnly

Flagsacommaseparatedlistofvariables(PublicorAliasname)asread‐only.

Syntax

ReadOnly [variable1, variable2, ...]

Units

Assignsaunitnametoafieldassociatedwithavariable.

Syntax

Units [variable] = [unit name]

A.1.2 Constant Declarations

Const

Declaressymbolicconstantsforuseinplaceofnumericentries.

Syntax

Const [constant name] = [value or expression]

ConstTable/EndConstTable

Declaresconstants,thevalueofwhichcanbechangedusingtheexternal

keyboard/displayorterminalCoption.Theprogramisrecompiledwiththenew

valueswhenvalueschange.SeeConstants

(p.122).

Syntax

ConstTable

[constant a] = [value]

[constant b] = [value]

[constant c] = [value]

EndConstTable

A.2 Data-Table Declarations

DataTable/EndTable

Markthebeginningandendofadatatable.

Syntax

DataTable(Name, TrigVar, Size)

[data table modifiers]

[on-line storage destinations]

[output processing instructions]

EndTable

DataTime

Declarationwithinadatatablethatallowstimestampingwithsystemtime.

Syntax

DataTime(Option)

A.2.1 Data-Table Modifiers

DataEvent

Setstriggerstostartandstopstoringrecordswithinatable.Oneapplicationis

withWorstCase.

Syntax

DataEvent(RecsBefore, StartTrig, StopTrig, RecsAfter)

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Campbell-scientific CR1000 Measurement and Control System Manual de usuario Pagina 475

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