Table Of Contents

RT Board LEDs (G Dataflow)

Last Modified: March 10, 2020

Controls the LEDs on all RT Series devices.


LED num

Number of the LED that the VI modifies. The LED number depends on the type of hardware. LED num is zero-indexed. You can specify LED num 0 to control the User1 LED for most LabVIEW Real-Time targets.



State to assign to the LED.

Name Description

Turns off the LED

Default Color 1

Sets the LED to the device default color 1

Default Color 2

Sets the LED to the device default color 2 (if available)


Toggles between off and device default color 1


error in

Describes error conditions that occur before this node runs. This input provides standard error in functionality.


LED state

Boolean value that indicates whether the LED is on or off.

True The LED is on.
False The LED is off.

error out

Contains error information. This output provides standard error out functionality.

Where This Node Can Run:

Desktop OS: none

FPGA: Not supported

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

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