Page 56 - Basic Course

KNX BASIC COURSE

15 KNX - Internal and external interfaces

PS/Ch
Backbone line
BC 1 Gateway

PS/Ch Main line = Line 0 Other
systems

LC 1 LC 15

PS/Ch DVC 1 PS/Ch DVC 1

1st line segment Line 15 1st line segment
Line 1

DVC 63 DVC 63

Figure 15: KNX - internal and external interfaces

KNX is open to be linked to any other system. The backbone line (or any other line) can
be connected via a gateway unit to e.g. PLC, ISDN, building management technology,
Internet etc.

The gateway unit converts the protocol bi-directionally.

Media couplers connect different types of KNX media (e.g. Twisted Pair and Power Line
110).

Parts of KNX installations can also be linked via optical fibre. The benefits of this are
electrical separation and greater cable lengths.

Home and Building Management Systems KNX Association
KNX TP Topology Topology_E1213a 17/24