Page 157 - Advanced Course

KNX ADVANCED COURSE

4.2 IP Router as Line Coupler
If an IP router is used as a line coupler (e.g. 1.2.0), no IP routers with the associated
backbone coupler address (e.g. 1.0.0) may be used “above” this device in the system.

IP Network

KNXnet/IP KNXnet/IP KNXnet/IP KNXnet/IP KNXnet/IP
Router Router Router Router Router
1.1.0 1.2.0 1.3.0 2.1.0 2.2.0
4/1/1 4/1/1 5/2/1 4/1/1
5/2/1
DVC DVC DVC DVC DVC
1.1.1 1.2.1 1.3.1 2.1.0 2.2.1
4/1/1 5/2/1 5/2/1 6/3/1 4/1/1

DVC DVC DVC DVC DVC
1.1.2 1.2.2 1.3.2 2.1.2 2.2.2
4/1/1 5/2/1 6/3/1

Figure 6: IP Router as line coupler

Home and Building Management Systems KNX Association
Couplers Couplers_E1209b.doc 19/21