Digital Input >> General Properties >> Advanced >> Data Transfer and Memory >> Data Transfer Request Condition

NI-DAQmx C Reference Help

Edition Date: January 2019

Part Number: 370471AM-01

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Data Type: int32
Description: Specifies under what condition to transfer data from the onboard memory of the device to the buffer.


Valid values

DAQmx_Val_OnBrdMemMoreThanHalfFull 10237 Transfer data from the device when more than half of the onboard memory of the device fills.
DAQmx_Val_OnBrdMemNotEmpty 10241 Transfer data from the device when there is data in the onboard memory.
DAQmx_Val_OnbrdMemCustomThreshold 12577 Transfer data from the device when the number of samples specified with Data Transfer Custom Threshold are in the device FIFO.
DAQmx_Val_WhenAcqComplete 12546 Transfer data when the acquisition is complete.



You can get/set/reset this property using:

  DAQmxGetDIDataXferReqCond

  DAQmxSetDIDataXferReqCond

  DAQmxResetDIDataXferReqCond

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