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DAQmx Write (Multiple Channels) (G Dataflow)

    Last Modified: February 6, 2017

    Writes a single sample of Boolean values to each channel in a task that contains multiple digital output channels. Each channel in the task can contain only one digital line.


    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.



    data contains a 1D array of Boolean samples to write to the task. Each element of the array corresponds to a channel in the task.



    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.


    auto start

    auto start specifies if this node automatically starts the task if you did not explicitly start it with the DAQmx Start Task node.


    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.


    number of samples written per channel

    number of samples written per channel is the actual number of samples this node successfully wrote to each channel in the task.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: LabVIEW NXG does not support FPGA devices

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