How Scenes Work
Every scene-capable actuator has a scene CO (DPT 17.001). All these COs are bound to the same GA. When the scene index (0–63) is sent, each actuator retrieves its internally stored value for that scene and sets its output accordingly.
To save a new scene value: set bit 7 in the scene telegram (learn mode). The actuator then stores its current actual value for that scene. No ETS access required, end users can adjust scenes themselves.
Scene Actuator vs. Device-Internal Storage
With device-internal scenes, each actuator stores its own value, cheaper, but scene recall requires only a single telegram. With a dedicated scene actuator, all values are stored centrally and sent as separate telegrams to each actuator on recall, more flexible, but more GA traffic.
Typical scenes: "Sleep" (blinds closed, heating reduced, lights off), "Movie" (lights 20%, blinds half), "Good Morning" (kitchen light 50%, heating to normal operation).
Key Facts
- DPT 17.001: 1 byte, scene index 0–63
- Set bit 7 = learn mode (save value)
- Max. 64 scenes per GA
- End user can adjust scenes without ETS
- Scene actuator: central storage, more GA traffic