Question
In the 3-level group address structure, what are the value ranges of main / middle / sub?
Answer
A — Main 0-31, Middle 0-7, Sub 0-255
Correct: The 3-level structure uses main 0-31, middle 0-7, sub 0-255.
Source
KNX Basic Course Documentation — 3.2.1 — p. 32
All proposed choices (exam context)
- A.Main 0-31, Middle 0-7, Sub 0-255✓
- B.Main 0-15, Middle 0-15, Sub 0-255
- C.Main 0-31, Middle 0-255, Sub 0-7
- D.Main 0-7, Middle 0-31, Sub 0-2047
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