HTP (Highest Takes Precedence) sends the highest channel value when multiple sources compete

When more than one QLC+ function or Virtual Console widget tries to set the same DMX channel simultaneously, the HTP rule resolves the conflict: whichever source sends the highest value wins. HTP applies to intensity-type channels (dimmers, RGB color intensities). Two sources can both drive a dimmer, but neither can lower the output below the other’s current value. A crossfade between Scenes progressively replaces HTP levels. Common misconception: HTP does not mean ‘most recently changed value’; it always takes the numerically highest value regardless of timing.

Examples

Slider A at 50%, Slider B faded up to 75%: output is 75%. Fading Slider B back below 50% leaves output at 50% (held by Slider A).

Assessment

Explain what happens to a dimmer channel when two Scenes with different intensity values for that channel both start simultaneously. What value is output? How does it change as one scene fades out?