Question

In the classic first-assignment procedure using the programming button (without a serial number), when can the individual address be downloaded?

KNX BasicLearnSystem OverviewMedium
Answer

A — Only as long as the programming LED is lit

In the classic button-based assignment procedure, the programming LED identifies the device. ETS can also overwrite a known address without physically pressing the button, or assign an address by serial number on compatible devices. These exceptions do not allow arbitrary writing "at any time".

All proposed choices (exam context)
  1. A.Only as long as the programming LED is lit✓
  2. B.At any time during normal operation
  3. C.Only after the device has been powered off
  4. D.Only via a group address telegram
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