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Operational Description
4.3 KNX Network Installation
Up to 15 areas and 225 different addresses for line couplers can be defined . For line coupler functionality in a KNX network, 01548 has to use the correct Individual
Address of a line coupler (x .y .0) . For backbone coupler functionality in a KNX network, 01548 has to use the correct Individual Address of an area coupler (x .0 .0) .
It is recommended to make sure the factory default Individual Address 15 .15 .0 is not used in the installation network .
Defining a correct topology is absolutely mandatory to guarantee proper functioning of an installation .
In a KNX system with 01548 backbone couplers and 01504 .2 line couplers, it is necessary to ensure that 01548 has an address assigned from a free addressing area .
Following figure illustrates a possible topology scenario .
01504.2
Bus State
Traffic
Function
LINE COUPLER
Main Sub
GA
PA
Sub Main
1.1.0
01504.2
Bus State
Traffic
Function
LINE COUPLER
Main Sub
GA
PA
Sub Main
1.2.0
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
1.0.0 2.0.0 3.1.0
01548
State
Traffic
Function
IP TP
GA PA
ROUTER IP KNX
Program
3.2.0 1.X.0 3.0.0
Main Line
TP Area
TP Area
TP Line
IP Backbone
TP Line TP Line
Subline Subline
Figure 5: 01548 Network Topology
Example:
If a KNX IP router with address 1 .0 .0 already exists on the backbone no KNX IP router with address 1 .x .0 can be added here . Even if no line coupler with address 1 .1 .0
exists on the subline of the 1 .0 .0 router . Vice versa, when line couplers with addresses 3 .x .0 already exist in an installation, an IP router with address 3 .0 .0 cannot be
added .