Question
What are the two functions of the Physical External Interface (PEI) between a separated application module and bus coupling unit?
Answer
C — Exchanging messages between the two parts and providing limited power to the application module
Correct: The text lists exactly these two functions of the PEI.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.Assigning the individual address and storing the application program
- B.Connecting the device to the KNX bus and supplying the full mains voltage
- C.Exchanging messages between the two parts and providing limited power to the application module✓
- D.Converting digital signals to analog and amplifying telegrams
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