KNX pulse device type
New device type
Added in v1.7.0.
KNX pulse device is a generic device that can trigger a KNX GroupWrite telegram to the KNX bus. It can be used to integrate various KNX installation devices that do not have a dedicated device type in the Matter specification. The pulse device is bridged to Matter as a simulated on/off plug-in unit.
Configuration
Configuration screenshot
List of configurable attributes
| Attribute | Value [Default] | Comment |
|---|---|---|
| Trigger | Group address 1-bit (DPT 1) - flags: C,W | GroupWrite telegram group address to send |
| Trigger Transmit Value | GroupWrite telegram value to send |
Description of configurable attributes
Trigger is the group address to which a GroupWrite telegram should be sent to. The telegram will send a DPT-1 GroupWrite with the value specified in Trigger Transmit Value.
Behavior in Matter apps
KNX pulse is presented in Matter as an on/off plug. Turning on the corresponding on/off plug via Matter triggers a GroupWrite telegram to the specified group address with the specified DPT-1 (1-bit) value (either 1 or 0). The on/off plug remains on for a maximum duration of 2 seconds, after which it turns off.
If a GroupWrite telegram is transmitted on the bus with the value equal to the Trigger Transmit Value, the on/off plug will turn on for 2 seconds, after which it will turn off. If another telegram is received with the value equal to the Trigger Transmit Value when the on/off plug is in the on position, it will turn off the plug and turn it back on again - simulating a pulse. This is done so that each matching telegram event can be received on the Matter side.