Question

In the common 3-level group address convention, what does the MAIN group represent?

KNX BasicLearnSystem OverviewMedium
Answer

B — The floor number

Correct: In the common convention the main group is the floor number.

Source

KNX Basic Course Documentation — 3.2.1 — p. 34

All proposed choices (exam context)
  1. A.The functional domain (lighting, heating, ...)
  2. B.The floor number
  3. C.The individual load
  4. D.The area of the topology
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