Operational Description
MECps
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2.3.2
KNX Topology
Up to 15 lines can be connected to an area line, shortly called Area. Up to 64 bus devices find
place on the same line. With usage of line repeaters, such line can be extended to 255 bus
devices having four line segments forming the single KNX TP line. But it is common practice
to insert a new line instead of extending the original one when exceeding 64 bus devices.
The free tree structure of the KNX topology prevents problems caused by circling telegrams
and heavy bus load. To maintain this condition, interconnections between lines or line
segments are strictly forbidden.
Figure 6: Linecoupler Network Topology
Each line and each segment must be powered seperately.
Using repeaters on backbone and main lines is not allowed.
Interconnections are not allowed.
