Question
A device carries the individual address 1.1.0. What does the device number 0 tell you?
Answer
A — It is the line coupler of that line (x.y.0 addresses the line coupler).
Correct: B = 0 addresses the line coupler in the respective line; 1.1.0 is the line coupler of line 1 in area 1.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.It is the line coupler of that line (x.y.0 addresses the line coupler).✓
- B.It is the first ordinary bus device on the line.
- C.It is an unloaded device still at its factory default.
- D.It is the backbone coupler of the area.
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