Campbell-scientific CR800 and CR850 Measurement and Control Systems Manual de usuario descargar pdf (Pagina 445)

100

101

Section 11. Glossary

445

string

Adatumconsistingofalphanumericcharacters.

supportsoftware

IncludesPC200W,PC400,RTDAQ,LoggerNet,andLoggerNetclients.

BriefdescriptionsarefoundinDataloggerSupportSoftware

(p.76).A

completelistingofdataloggersupportsoftwareavailablefromCampbell

ScientificcanbefoundintheappendixSoftware

(p.546).Software

manualscanbefoundatwww.campbellsci.com.

synchronous

Thetransmissionofdatabetweenatransmittingandareceivingdevice

occursasaseriesofzerosandones.Forthedatatobe"read"correctly,

thereceivingdevicemustbeginreadingattheproperpointinthe

series.Insynchronouscommunication,thiscoordinationis

accomplishedbysynchronizingthetransmittingandrecei

vingdevicesto

acommonclocksignal(seeAsynchronous

(p.425)).

systemtime

WhentimefunctionsarerunoutsidetheScan()/NextScanconstruct,

thetimeregisteredbytheinstructionwillbebasedonthesystemclock,

whichhasa10‐msresolution.Seescantime

(p.442).

task

1)GroupingofCRBasicprograminstructionsbytheCR800.Tasks

includemeasurement,SDM,andprocessing.Tasksareprioritizedbya

CR800operatinginpipelinemode.2)Auser‐customizedfunction

definedthroughLoggerNetTaskMaster.

TCP/IP

TransmissionControlProtocol/InternetProtocol.

Telnet

Asoftwareutilitythatattemptstocontactandinterrogateanother

specificdeviceinanetwork.

constant

Aterminalisthepointatwhichasinglewireconnectstoawiringpanel

orconnector.Terminalsareusuallysecuredwithsmallscrew‐orspring‐

loadedclamps.Seeconnector

(p.427).

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