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DAQmx Read (Time) (G Dataflow)

    Last Modified: February 6, 2017

    Reads one or more waveforms from a task that contains one or more analog input channels. You must specify the duration, in seconds, for the waveform.


    task in

    task in is the name of the task that the operation applies.


    error in

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.



    duration specifies the amount of time in seconds to read samples.



    timeout specifies the amount of time in seconds to wait for samples to become available. If the time elapses, the node returns an error and any samples read before the timeout elapsed. The default timeout is 10 seconds. If you set timeout to -1, the node waits indefinitely.

    If you set timeout to 0, the node tries once to read the requested samples and returns an error if it is unable to.


    task out

    task out is a reference to the task after this node runs.


    error out

    error out contains error information. This output provides standard error out functionality.



    data returns a 1D array of waveforms. Each element of the array corresponds to a channel in the task. The order of the channels in the array corresponds to the order in which you add the channels to the task or to the order of the channels you specify with the Channels to Read property. NI-DAQmx scales the data of the units to the measurement.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: LabVIEW NXG does not support FPGA devices

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