LEDs
Library Overview
The LEDs library contains controls that use graphical elements
to imitate light-emitting diodes (LEDs). Each block reflects its input
value by setting one or more graphical elements to an on or off state.
By default, the number of LEDs in the on state is the rounded value
of the block's input.
Most blocks in this library contain a single LED. These blocks
differ from each other in the appearance of their LEDs. The Vertical
Meter, Horizontal Meter, and Circle Meter blocks contain multiple
LEDs per block.
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Customizing LEDs
The table below lists some common ways to customize a block
in the LEDs library, using its ActiveX Control Properties dialog box.
| Task | Description |
|---|
| Add or remove LEDs | Change the NumLEDs property on the LEDs/General panel. |
| Change the shape or color of a particular LED | On the LEDs/General panel, set LEDIndex to
the number corresponding to the LED you want to customize. To apply
a previously defined style, set the LEDStyleID to
the number corresponding to the style. To define a new style for this
LED, increase the StyleID property on the Styles panel
and then configure the color, picture, or shape properties accordingly. |
| Change the size or layout of a set of LEDs | On the LEDs/General panel, use LEDWidth and LEDHeight to
control the size of each LED. Use LEDSeparation to
control the spacing between successive LEDs. Use Orientation and/or Direction to
control how multiple LEDs are arranged along a line. |
| Display
a binary representation of the (rounded) input | Set the Mode property on the LEDs/General panel
to Bitwise. The first LED corresponds to
the least significant bit. |
| Display decaying maximum value of the input, in addition to
the current input | Check the MaxDecay check box on the LEDs/General panel.
The DecayRate value controls how quickly the
displayed value decays from the maximum to the current input value.
Larger positive values correspond to a slower decay. A value of zero
causes the block to reflect its maximum value with no decay. |
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 | Angular Gauges | | Linear Gauges |  |
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