If this function is active, a life sign (a so-called heartbeat) is sent every 10 minutes.
This is primarily used for informing a receiver that this device is present in the network and WOLi is running. [KNX only]

The output is 14-byte text (DPT 16.001) and contains the MAC address of the connecting interface without a separator.
00:80:41:ae:fd:7e = 008041aefd7e