Table Of Contents

Configure Internal Trigger (G Dataflow)

Version:
    Last Modified: December 18, 2017

    Configures the internal trigger source and slope of the trigger.

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    session in

    Instrument session obtained from Initialize With Options.

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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    source channel name

    Name of the channel to use as the internal trigger source.

    The USB-568x has only one channel, so you must specify 0 as the value of this control.

    Valid Values:

    • 0
    • empty string ""

    Default: 0

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    slope

    Polarity of the internal trigger slope.

    Name Description
    Positive Sets the trigger to occur on the rising edge (a transition from low to high) of the trigger pulse.
    Negative Sets the trigger to occur on the falling edge (a transition from high to low) of the trigger pulse.

    Default: Positive

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    session out

    Reference to your instrument session passed to the next node.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported

    Web Server: Not supported in VIs that run in a web application

    Hardware Support:

    This node supports the following hardware:

    • USB-5681
    • USB-5683
    • USB-5684


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