Справочник Пользователя для National Instruments 321645c-01
Chapter 2
Function Reference — SCXI_AO_Write
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National Instruments Corporation
2-319
NI-DAQ FRM for PC Compatibles
SCXI_AO_Write
Format
status = SCXI_AO_Write (SCXIchassisID, moduleSlot, channel, opCode, rangeCode,
voltCurrentData, binaryData, binaryWritten)
Purpose
Sets the DAC channel on the SCXI-1124 module to the specified voltage or current output
value. You can also use this function to write a binary value directly to the DAC channel,
or to translate a voltage or current value to the corresponding binary value.
value. You can also use this function to write a binary value directly to the DAC channel,
or to translate a voltage or current value to the corresponding binary value.
Parameters
Input
Output
Parameter Discussion
channel is the number of the analog output channels on the module.
Range:
Range:
0 to 5.
opCode specifies the type of data to write to the DAC channel. You can also use opCode to
tell
tell
SCXI_AO_Write
to translate a voltage or current value and return the corresponding
binary pattern in binaryWritten without writing anything to the module.
0:
Write a voltage or current to channel.
1:
Write a binary value directly to channel.
Name
Type
Description
SCXIchassisID
i16
chassis ID number
moduleSlot
i16
module slot number
channel
i16
the DAC channel of the module to write to
opCode
i16
type of data
rangeCode
i16
the voltage/current range to be used
voltCurrentData
f64
voltage or current to be produced at the channel
binaryData
i16
binary value to be written to the DAC
Name
Type
Description
binaryWritten
i16
actual binary value written to the DAC