Question

How is bus access organised in KNX TP?

KNX BasicLearnSystem OverviewMedium
Answer

C — Decentralised: there is no central master/slave controller and each device accesses the bus itself

Correct: KNX TP bus access is not controlled centrally by a master/slave scheme; devices access the bus on their own.

All proposed choices (exam context)
  1. A.A central master polls each device in turn
  2. B.A token is passed between devices in a fixed order
  3. C.Decentralised: there is no central master/slave controller and each device accesses the bus itself✓
  4. D.The power supply assigns each device a fixed time slot
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