Question
Which statement about the KNX serial number is correct?
Answer
A — It is a unique identifier programmed during manufacturing, is not modifiable, and is stored in the receiver as the source address
Correct: the serial number is factory-programmed, unmodifiable, sent in every telegram and stored as the transmitter's source address.
Source
KNX Basic Course Documentation — 3.4 — p. 147
All proposed choices (exam context)
- A.It is a unique identifier programmed during manufacturing, is not modifiable, and is stored in the receiver as the source address✓
- B.It is assigned by the installer with ETS during commissioning
- C.It changes each time the device transmits
- D.It is only used inside one installation and cannot distinguish neighbouring installations
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