Line coupler S
General
Status: March 16 (Subject to change) Page
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1.2.2
Repeater
As a repeater, the Line coupler S connects the data flow of two line segments but isolates them
electrically.
Behind a line coupler (in one line), up to three repeaters can be connected in parallel in a line. This is how
up to four line segments form an entire line. A line can thus be expanded from 64 possible devices (1 line)
up to 256 devices (4 line segments). Every line segment must be provided with power by its own KNX
power supply.
The repeaters do not have filter tables. For this reason, a telegram is sent in all line segments
independently of whether or not it is processed in the respective line segment. Whether this telegram is
initiated within the line or whether it has been sent from the main line via the repeater is also irrelevant.
If there is a transmission error of a physically addressed telegram, this telegram is not repeated.
If the repeater routes a telegram and does not receive an acknowledgement or there is a transmission
error, the repeater repeats the telegram up to three times. With the parameters
In case of errors repeat
group telegrams,
the response for both line segments is set separately.
