LabVIEW botches unbundle when cluster is changed

  • Define a cluster (typedef) as Characteristics.ctl wave and a VI that separate this cluster as Cluster rename
  • Delete an item (Amplitude) of the cluster and add another to the end (background noise), so that the cluster always contains 3 elements such as the characteristics of the 2.ctl wave,.
  • Apply the changes.
  • The unbundle now uses the phase shift twice.  The first occurrence of phase shift is incorrectly wired amplitude; He must always say dephasing, and black, and the VI should be impassable.

The same problem occurs if the VI that uses the cluster is not in memory when the cluster is changed.  This problem we often enough and is a major source of bugs and cause of the loss of time.  We understand that LabVIEW can not determine if the change in the name of the second element was intentional or a mistake made by the programmer.  We would prefer to get a broken VI and to solve the problem ourselves, rather than having LabVIEW to make erroneous assumptions.


I can't reproduce this in LV8.5.1. What version do you use?

What happens if you:

delete an item
apply the changes,
Add another element,
apply the changes.

Kind regards


Tags: NI Software

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