Campbell-scientific CR800 and CR850 Measurement and Control Systems Uživatelský manuál stáhnout pdf (Strana 433)

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101

Section 11. Glossary

433

globalvariable

AvariableavailableforusethroughoutaCRBasicprogram.Thetermis

usuallyusedinconnectionwithsubroutines,differentiatingglobal

variables(thosedeclaredusingPublicorDim)fromlocalvariables,

whicharedeclaredintheSub()andFunction()instructions.

ground

Beingorrelatedtoanelectricalpotentialof0Volts.

halfduplex

Systemsallowbi‐directionalcommunications,butnotsimultaneously.

handshake,handshaking

Theexchangeofpredeterminedinformationbetweentwodevicesto

assureeachthatitisconnectedtotheother.Whennotusedasaclock

line,theCLK/HS(pin7)lineinthedataloggerCSI/Oportisprimarily

usedtodetectthepresenceorabsenceofperipherals.

HelloExchange

Theprocessofverifyinganodeasaneighbor.

Hertz

Abbreviated"Hz."Unitoffrequencydescribedascyclesorpulsesper

second.

HTML

HypertextMarkupLanguage.Aprogramminglanguageusedforthe

creationofwebpages.

HTTP

HypertextTransferProtocol.ATCP/IPapplicationprotocol.

IEEE4

Four‐byte,floating‐pointdatatype.IEEEStandard754.Sameformatas

Float.FloatisthenameusedwhendeclaringdatatypeforPublicorDim

declaredvariables.

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