Crestron CNX-BF12 Dokumentacja Pobierz pdf (Strona 78)

EssentialsofCrestronProgramming



78

MoreonSerialStrings



Bydefault,serialsignalsaretransient,meaningthatthedataonaserialsignalisonly

validforthelogicwave(definedbelow)inwhichitwascreated.Alogicwaveisa 

processorunitofmeasurementdefinedastheelapsedtimebetweenthemomenta

signalʹssta

techangesandthemomentthatallsymbolsconnectedtothatsignalhave

beenevaluated.Thisisanalogoustothetermʺpropagationdelayʺusedwhendescribing

digitalhardware.



SymbolssuchastheMakeStringPermanentsymbolallowserialstringstoberetainedin

memoryforaslongastheprogramisrunning.(Theserialdataisremovedfrom

memorywhentheprogramresetsorshutsdown.)Inadditio

n,mostCrestron

touchpanelsincludea<PermanentStringSize>parameterthatmakesserialstrings

connectedtothetouchpanelsymbolpermanent.



TimeandDate



TheVTPro‐eprojectincludesanindirecttextfieldinwhichth

ecurrentdateisdisplayed.

Thedateistakenfromtheinternalclockofthecontrolsystemandcanbeformattedin

differentways.



SinceuploadinganewVisionToolsPro‐eprojecttoatouchpanelwillcausethe

touchpanellosethedate(butnotthetime),thepr

ogrammingincludesaMakeString

Permanentsymbol.



TheClockDriversymbolisusedtoretrievethetimeofdayfromtheinternalclockofthe

controlsystem.

The <dst> parameter specifies the format for Daylight Savings Time,

where 1d corresponds to United States DST.

TheTODistransmittedonthe<tod$>serial

output.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 99 100

Brak uwag

Crestron CNX-BF12 Dokumentacja Strona 78