Connector

NI FlexLogger

Stream channels from a running FlexLogger session

Category

Data acquisition

Kind

source

Capabilities

StreamsAssetsOperationsEntities

Runs on

Windows x64

Watch the test FlexLogger is running right now. You see the current value of every channel in the open project, live. Your FlexLogger projects, screens and logging stay as they are.

Runs on Windows, where FlexLogger runs. To collect the .tdms files FlexLogger writes, on any platform or from a network share, use the NI TDMS files connector.

#What you get

• Live values — the current value of every channel in the open project.
• Channels from the project — FlexLogger supplies the channel list. Open a different project and nothing needs changing here.
• One FlexLogger installation per input.

#Setup

1. In Inputs, add NI FlexLogger.
2. Leave FlexLogger host empty to use FlexLogger on this machine. Set it only when FlexLogger runs on another machine.
3. Set how often to check for new data. This is the rate you get: each check reads one value per channel.
4. Press Test connection. It names the FlexLogger build, the open project and how many channels it found.
5. Channels appear on Live as /flexlogger/<group>/<channel>. You can use them in Trellis, replay and notebooks like any other data.

#Requirements

• FlexLogger 2022 Q3 or later, with automation access enabled.
• A licensed FlexLogger. Reading a running session needs FlexLogger's Automation API, a paid feature. FlexLogger Lite refuses it, so this connector gets no data on Lite. Test connection shows NI's own message. If your licence has lapsed, the files still work: the NI TDMS files connector reads the .tdms files FlexLogger saves, with no licence.
• A project open in FlexLogger. With none open, the input says so. It starts as soon as you open a project.
• Phloem finds FlexLogger's automation port on its own.

#Live values vs. the full record

This connector reads current values on each check. It does not capture every sample of a fast channel.

For every sample at its own time, add the NI TDMS files connector pointed at FlexLogger's log folder. Most setups run both: live values during the run, the file afterwards as the record.

#Notes

• If FlexLogger is not running yet, the input waits and connects when it starts.
• If the project closes or FlexLogger exits, the input says so and reconnects when a session returns.
• An address it cannot read is reported straight away.

#Supports

• NI FlexLogger 2022 Q3 and later (Automation API)
• A LICENSED FlexLogger — the Automation API is a paid feature and FlexLogger Lite refuses it (without one, the TDMS connector reads the .tdms files FlexLogger saves, no licence needed)
• A project open in FlexLogger — the tap follows whatever it has loaded

#Connection fields

Every field the Add input form shows for this connector.

Updated November 6, 2026