Garage Door configuration

The KNX Garage node drives a motorised door using dedicated group addresses for direct commands, toggle impulses, hold-open / disable logic and safety sensors. It can optionally re-close the door after a timeout, emit movement / obstruction indicators and report events to the Node-RED flow.

Group addresses

Purpose Property Notes
Direct command Command GA (gaCommand) Boolean GA: true opens, false closes. Default DPT 1.001.
Toggle impulse Impulse GA (gaImpulse) Rising edge toggles the door (default DPT 1.017). Used automatically if no direct command GA is supplied.
Hold-open override Hold-open GA (gaHoldOpen) When true the door remains open and the auto re-close timer is cancelled.
Disable node Disable GA (gaDisable) Blocks any command sent by the node while true (maintenance/manual operation).
Photocell sensor Photocell GA (gaPhotocell) Should go true when the beam is interrupted; the node reopens and raises obstruction.
Movement indicator Moving GA (gaMoving) Optional. Pulsed when the node commands movement so other devices can follow the state.
Obstruction flag Obstruction GA (gaObstruction) Mirrors the obstruction state for supervision or alarms.

All addresses accept custom DPTs if different datatypes are required.

Automatic re-close

  • Enable Auto re-close to start a timer whenever the door becomes open.
  • The countdown is cancelled while hold-open or disable are active.
  • When the timer expires the node sends the close command (or impulse) and emits an auto-close event.

    Flow example

    ```javascript

// Open the door msg.payload = ‘open’; return msg;


```javascript
// Close the door
msg.payload = 'close';
return msg;

// Toggle the door state
msg.payload = 'toggle';
return msg;

Safety handling

  • A photocell true during closing immediately triggers an open command and sets the obstruction flag.
  • External writes to the obstruction GA update the internal state so dashboards stay in sync.
  • Movement pulses can be consumed by lighting, ventilation or alarm logic.

    Flow interaction

  • Injecting msg.payload with true, false, 'open', 'close' or 'toggle' controls the door from the flow.
  • With Emit events active the node outputs structured messages: ```

{ topic: , event: 'open' | 'close' | 'toggle' | 'auto-close' | 'obstruction' | 'disabled' | 'hold-open', state: 'open' | 'closed' | 'opening' | 'closing', disabled: , holdOpen: , obstruction: } ```

These events are useful for dashboards, logging or custom automations around the garage door.