Scale

Overview

Drag Geometry → Scale onto a component to drive its size from a number.

How to use it: every control in the editor

Scale clamps Source value to Limit minimum / Limit maximum and maps that interval to At limit minimum / At limit maximum. The output is a scale factor; 1 preserves the original size. Source minimum / Source maximum are available as ValueMin / ValueMax aliases. Changing the source range alone does not update the input limits.

• Behavior name is editable; Component name is read-only.
• Quality override / Override border by quality configures Good and Bad borders for data quality, separately from process limits.
• JS functions... inserts a method into the focused expression field.
• Source value returns a number, for example ReadTagDouble("PLC_LINE01.TANK01.LEVEL", 0). Condition returns a boolean; false skips the behavior and does not hide the component.
• Source minimum / Source maximum default to 0 / 100 and supply the ValueMin / ValueMax expression aliases.
• At limit minimum / At limit maximum specify scale factors, initially 0.5 / 1.5 for a new Scale behavior (change them to 0 / 1 for the level-fill example), at the input-limit endpoints. Capture calculates an endpoint from the component geometry.
• Limit minimum / Limit maximum start as independent values 0 / 100 and control clamping and normalization. Enter ValueMin / ValueMax to follow the source range.
• Moving edge: Top moves the top edge and fixes the bottom; Right moves the right edge and fixes the left.
• Save / Ctrl+S validates and saves; Cancel / Esc discards the edit.

// Source value
ReadTagDouble("PLC_LINE01.TANK01.LEVEL", 0)

// Source minimum / maximum: 0 / 100
// Limit minimum / maximum: ValueMin / ValueMax
// At limit minimum / maximum: 0 / 1
// Moving edge: Top

How the Capture buttons work

The editor records the original size. Resize the same component in PowerPoint and click Capture beside an endpoint. It calculates target size / original size using Moving edge, writes the factor and attempts to restore the original geometry.

• Choose Moving edge first, because it decides whether the calculation uses width or height and which edge defines the target size.
• Top / Bottom use height: Top uses original bottom minus current top, and Bottom uses current bottom minus original top.
• Left / Right use width: Left uses original right minus current left, and Right uses current right minus original left.
• If the original width/height is zero, the target size would be negative, or the selected object is not the same component, Target warns and refuses to write.
• Capture writes a 0.### factor. If you need a fixed expression instead, you can still overwrite At limit minimum / At limit maximum by hand.

When to use it

Use size to represent a value, for example:

• Level fill: a fill block inside a tank rises with the level percentage; set Moving edge to Top so the bottom stays fixed.
• Bar growth: a throughput or load bar grows from one end with the value; set Moving edge to the edge it grows toward.
• Icon response: an icon scales between At limit minimum and At limit maximum with a value as a strength indicator.