Table Of Contents

Query Tags (G Dataflow)

Version:
    Last Modified: August 7, 2018

    Asks the server for tags matching the criteria you specify.

    If an input is empty, this node opens references to every tag on the server.

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    configuration

    Connection established with the server.

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    paths

    Paths to tag references.

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    Note  

    Tag paths do not support spaces. If an illegal character is present, the node errors out.

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    keywords

    Specific words provided to find tags.

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    properties

    Key-value pairs that exist as metadata on a tag.

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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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    skip

    Number of tags skipped to limit the amount returned from the server.

    If the input is left empty, the query returns the first 1000 results by default.

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    take

    Number of tags requested from the server.

    If the input is left empty, the query returns the first 1000 results by default.

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    tags

    Tags the server references to communicate measurement data.

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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: Supported in VIs that run in a web application


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