Controlling One Light and Recalling a Scene with a Single Button

This use case demonstrates how to control a single light with a short press of a push button and recall a scene (for example a central OFF scene) with a long press of the same button.

Configuration of the Push Button

Open IHC Plugin > DEVICE MAPPING > Input Devices.
Select the input device you want to configure.
Set:
- Device type: Push button
- Function: Short / Long press
Assign KNX group objects for:
- Short press status
- Long press start status
  
  Existing group objects can be selected, or new ones can be created using the Add new object option.
Configure the press functions:
- Short press function: TOGGLE
- Long press start function: ON
Save the configuration.

The short press of the button is used to toggle the assigned light on or off. The long press start signal is used to trigger a scene.

Scene Configuration

The next step is to create a scene that will be triggered by the long press of the button.

In your controller, open the Configurator.
Navigate to the Scenes tab.
Click Add scene in the bottom‑left corner.
Fill in the Name field (for example Short/Long test). The scene name must be unique.
Ensure that the Scene is active option is enabled.
Select the Trigger object, which must be the KNX group object associated with the Long press start status of the push button.
Set the Trigger value to 1 (ON). The scene will be triggered when the long press starts, that is when the Long press start status is set to ON.
Click Save.

After creating the scene, click and add all KNX group objects that should be part of the scene sequence. Set their corresponding values for the scene recall (for example switching lights OFF for a central OFF scene).

Functional Overview

The functional overview is illustrated in the diagram below.

A short press of the push button toggles the associated light.
A long press of the same button recalls the configured scene.
The scene is triggered when the long press starts and the Long press start status changes to ON.

This configuration allows combining direct light control and scene recall using a single physical button.