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Using NI SystemLink Tags to Exchange Data between FlexLogger and LabVIEW

Last Modified: December 9, 2019

Configure your system to use the FlexLogger SystemLink feature to exchange data with LabVIEW.

What to Use

The following FlexLogger and LabVIEW software versions are required to support the SystemLink tag feature:
  • LabVIEW 2017 or later
  • FlexLogger 2018 R4 or later

What to Do

  1. Install LabVIEW.
  2. Install FlexLogger, ensuring to select NI SystemLink Tag Support for LabVIEW <version> from the Additional items you may wish to install dialog.

    If you have already installed FlexLogger and would like to add NI SystemLink tag support, complete the following steps.

    1. Open NI Package Manager and locate FlexLogger <version> on the Installed tab.
    2. Hover over the row to see the Install or remove related packages gear.
    3. Select NI SystemLink Tag Support for LabVIEW <version> and click Next.
    4. Follow the instructions to complete installation of SystemLink tag support.


To exchange data with LabVIEW, you must create and configure a FlexLogger project. For more information on this, refer to the FlexLogger Projects topic and the Configuring and Saving a Project topic.

  1. In your configured FlexLogger project, go to Project»Settings and ensure that the Publish SystemLink Tags and Consume External SystemLink Tags options are checked.

    After enabling these options for the first time, you will need to close and re-open your project.

  2. Navigate to Program Files»National Instruments»FlexLogger <versionExamples»SystemLink Integration to locate FlexLogger Tag Examples.lvproj. This LabVIEW project contains several example VIs to get you started with exchanging data using the SystemLink tags, including VIs for sending I/O data points to FlexLogger, importing I/O from an existing FlexLogger project, or programatically controlling output values in FlexLogger.
The recommended read rate of data using SystemLink tags is 1 Hz. For channels that require a faster read data rate, consider using the FlexLogger Plugin Development Kit to create a custom plugin for your project. Refer to the Adding a Plugin to Your Project topic for more information.

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