Functions Palette/Programming/Structures

From LabVIEW Wiki
Jump to: navigation, search
For LoopWhile LoopTimed StructuresCase StructureEvent StructureIn Place Element StructureFlat Sequence StructureFormula NodeDiagram Disable StructureConditional Disable StructureType Specialization StructureShared VariableLocal VariableGlobal VariableDecorationsFeedback Node
About this image
Structures palette (Click on a function to navigate)
Object information
Owning palette Programming palette
Type Subpalette
Requires Basic Development Environment

A Structure is a construct that surrounds other programming elements. It divides the block diagram into a hierarchy of sub-diagrams. Some structures only contain one sub-diagram, or frame, (i.e. For Loops, While Loops, In Place Element Structures, etc.). While others contain multiple sub-diagrams, or frames, (i.e. Case Structures, Event Structures, Diagram Disable Structures, and Conditional Disable Structures).

Structures have three uses. They either:

  1. Control the execution between blocks of code (Flat Sequence Structure, Stacked Sequence Structure, In Place Element Structures, Timed Sequence)
  2. Allow a choice between different blocks of code to execute (Case Structures, Event Structures, Diagram Disable Structures, Conditional Disable Structures)
  3. Allow code to repeat execution (For Loops, While Loops, Timed Loops)


Timed Structures Timed Structures
Decorations Decorations


For Loop For Loop
While Loop While Loop
Case Structure Case Structure
Event Structure Event Structure
In Place Element Structure In Place Element Structure
Flat Sequence Structure Flat Sequence Structure
Stacked Sequence Structure Stacked Sequence Structure
Formula Node Formula Node
Diagram Disable Structure Diagram Disable Structure
Conditional Disable Structure Conditional Disable Structure
Type Specialization Structure Type Specialization Structure


Shared Variable Shared Variable
Local Variable Local Variable
Global Variable Global Variable
Feedback Node Feedback Node


Version Change(s)
LabVIEW 2017 The Type Specialization Structure was added in conjunction with the addition of Malleable VIs.
LabVIEW 2014 The Stacked Sequence Structure is considered to be deprecated and has been removed from the Structures Palette although it is still functional to code upgraded from older versions.
LabVIEW 8.5 In Place Element Structure was added.
LabVIEW 8 Diagram Disable Structure, Conditional Disable Structure and Shared Variable were added.
LabVIEW 7 Flat Sequence Structure and Feedback Node were added.
LabVIEW 6 Event Structure was added.