Timed Loop Does Not Execute in LabVIEW

Updated Oct 22, 2023

Reported In


  • LabVIEW
  • LabVIEW Real-Time Module

Issue Details

  • One of the Timed Loops in my Labview VI does not execute. I have automatic error handling enabled, and LabVIEW does not return an error. Why does the Timed Loop not execute?
  • One of my Timed Loops in my  LabVIEW VI seems to be frozen, it never executes and neither finishes its process. Why is this happening?


This behavior can occur either when a timed loop fails to execute or when it becomes stuck in the process of completing its execution.

A Timed Loop does not execute if it receives an error condition. Because Timed Loops do not support automatic error handling, you must wire an indicator to the Error terminals of the Timed Loop's input or output node to identify any error that is occurring with the Timed Loop.

Timed loops can also experience difficulties if the processes within them fail to complete. It is crucial to ensure that when including subVIs, nested loops, or other structures within Timed Loops, they contain a finite procedure or can be stopped as needed.

Additional Information

When monitoring the Error output, you may see various Timed Loop Error Codes to explain the error you are seeing further.