Campbell-scientific CR1000 Measurement and Control System Manual de usuario Pagina 492

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Appendix A. CRBasic Programming Instructions
492
SDMIO16
SetsupandmeasuresanSDMIO16controlportexpansiondevice.
Syntax
SDMIO16(Dest, Status, Address, Command, Mode Ports 16-13,
Mode Ports 12-9, Mode Ports 8-5, Mode Ports 4-1, Mult,
Offset)
SDMSIO4
Controlsandtransmits/receivesdatafromanSDMSIO4Interface.
Syntax
SDMSIO4(Dest, Reps, SDMAddress, Mode, Command, Param1,
Param2, ValuesPerRep, Multiplier, Offset)
SDMSpeed
ChangestheratetheCR1000usestoclockSDMdata.
Syntax
SDMSpeed(BitPeriod)
SDMSW8A
ControlsandreadsanSDMSW8A.
Syntax
SDMSW8A(Dest, Reps, SDMAddress, FunctOp, SW8AStartChan, Mult,
Offset)
SDMTrigger
SynchronizewhenSDMmeasurementsonallSDMdevicesaremade.
Syntax
SDMTrigger
SDMX50
Allowsindividualmultiplexerswitchestobeactivatedindependentlyofthe
TDR100instruction.
Syntax
SDMX50(SDMAddress, Channel)
TDR100
DirectlymeasuresTDRprobesconnectedtotheTDR100orviaanSDMX50.
Syntax
TDR100(Dest, SDMAddress, Option, Mux/ProbeSelect, WaveAvg,
Vp, Points, CableLength, WindowLength, ProbeLength,
ProbeOffset, Mult, Offset)
TimedControl
AllowsasequenceoffixedvaluesanddurationstobecontrolledbytheSDMtask
sequencerenablingSDMCD16xcontroleventstooccurataprecisetime.See
theappendixRelayDrivers
(p.563).
Syntax
TimedControl(Size, SyncInterval, IntervalUnits, DefaultValue,
CurrentIndex, Source, ClockOption
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