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Virtual Instrumentation With LabVIEW

Virtual Instrumentation With LabVIEW. LabVIEW Programs Are Called Virtual Instruments (VIs). Front Panel Controls = Inputs Indicators = Outputs. Block Diagram Accompanying “program” for front panel Components “wired” together. VI Front Panel. Panel Toolbar. Boolean Control. Double

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Virtual Instrumentation With LabVIEW

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  1. Virtual Instrumentation With LabVIEW

  2. LabVIEW Programs Are Called Virtual Instruments (VIs) • Front Panel • Controls = Inputs • Indicators = Outputs • Block Diagram • Accompanying “program” for front panel • Components “wired” together

  3. VI Front Panel PanelToolbar Boolean Control Double Indicator Waveform Graph

  4. VI Block Diagram Thermometer Terminal Call to subVI Temperature Graph Knob Terminal Numeric Constant WhileLoop Stop Button Terminal Stop Loop Terminal

  5. Controls and Functions Palettes Controls Palette (Panel Window) Functions Palette (Diagram Window) Graphical, floating palettes Used to place controls & indicators on the front panel, or to build the block diagram

  6. Tools Palette • Floating Palette • Used to operate and modify front panel and block diagram objects. Operating Tool Positioning/Resizing Tool Labeling Tool Wiring Tool Shortcut Menu Tool Scrolling Tool Breakpoint Tool Probe Tool Color Copy Tool Coloring Tool

  7. Status Toolbar Run Button Continuous Run Button Abort Execution Pause/Continue Button Text Settings Align Objects Distribute Objects Reorder Additional Buttons on the Diagram Toolbar Execution Highlighting Button Step Into Button Step Over Button Step Out Button

  8. Creating a VI Front Panel Window Block Diagram Window Indicator Terminals Control Terminals

  9. Dataflow Programming • Block diagram does NOT execute left to right • Node executes when data is available to ALL input terminals • Nodes supply data to all output terminals when done

  10. Icon Terminals Connector Icon and Connector • An icon represents a VI in other block diagrams • A connector shows available terminals for data transfer

  11. Loops • While Loops • Have Iteration Terminal • Always Run Once • Run According to Continue Terminal • For Loops • Have Iteration Terminal • Run According to input N

  12. Select the loop Enclose Code to Repeat Loops (cont.) While Loop

  13. Single Plot Charts Multiplot Charts Wiring Data into Charts

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