This content is not available in your preferred language.

The content is shown in another available language. Your browser may include features that can help translate the text.

Undirected Tunnel Error With Stacked Sequence Structure

Reported in.

  • LabVIEW Base
  • LabVIEW Full
  • LabVIEW Professional

Issue Details

  • If a source is connected on both sides of the structure or no source is connected, the tunnel cannot decide the direction of dataflow. Verify that every case in your stacked sequence structure is fully wired, and that a source is never connected on both side of the structure. The  LabVIEW Help  has more detailed information on this case. 
  • Remove any broken wires in your VI by selecting  Edit»Remove Broken Wires  or by pressing <Ctrl-B>
  • If you have tried both of the previous steps and are still seeing this error, try replacing your stacked sequence structure with a flat sequence structure. Right-click the stacked sequence structure and select  Replace»Replace with Flat Sequence  to resolve the error.

Additional Information

Related links.

LabVIEW Help: Wire connected to an undirected tunnel

Other Support Options

Ask the ni community.

Collaborate with other users in our discussion forums

  • Search the NI Community for a solution

Request Support from an Engineer

A valid service agreement or active software subscription may be required, and support options vary by country.

  • Open a service request
  • Learn about software subscriptions and services
  • Learn about hardware service programs

Was this information helpful?

Not Helpful