What is the Difference Between Data Entry and Scale Setting in Knob Properties?

Updated Aug 14, 2025

Reported In

Software

  • LabVIEW

Issue Details

In the Knob Properties, I set the Data Entry >> Maximum to 10, and the Scale >> Maximum to 100. However, the knob control still displays a maximum value of 100, instead of the expected 10.

What is the functional difference between the Maximum value set in Data Entry and the one set in Scale?

Solution

The value set in the Scale property of a knob determines the visual range displayed on the knob interface, while the Data Entry property defines the actual range of values that the user is allowed to input or control.

For instance, if the Scale Maximum is set to 100 and the Data Entry Maximum is set to 10, and the Response to value outside limits option is set to Coerce the knob will still visually display values up to 100. However, the user will only be able to enter or adjust values up to 10. Any attempt to exceed this limit will automatically be corrected to stay within the defined range.

In short, although the knob may appear to support higher values, the user input is strictly limited by the Data Entry settings.