Siemens Synco 700 Series Basic Documentation page 82

Point-to-point
connection
Multiple connections
IP Ac
1.0.0
N146
Main line 1
Lc
1.1.0
Area 1
82/120
Building Technologies
HVAC Products
With a point-to-point connection the Ethernet cable forms area line 0, irrespective
of whether the coupling applies to two areas or lines (see diagram) or one area
with one line.
A crossed Ethernet cable is required for the coupling of two IP routers.
IP Lc
192.168.10.1
0.1.0
255.255.255.0
N146
0.1.1
0.1.2
0.1.3
0.1.x
For multiple IP router connections, a switch box is required. As part of the IP
network, the switch box represents area line 0.
Straight Ethernet cables must be used when connecting IP routers to the switch
box.
IP network (Area line 0)
IP Ac
2.0.0
N146
Main line 2
Lc Lc
1.2.0 2.1.0
Area 2
Basic documentation: Communication via the KNX bus
Large plants
Ethernet cable (Area line 0)
IP Lc
0.1.0
N146
Lc
2.2.0
Line 1
0.2.0
Switchbox
IP Lc
0.2.0 3.0.0
N146
3.1.0
Line 2
Area 0
IP Lc
192.168.102
255.255.255.0
N146
0.2.1
0.2.2
0.2.3
0.2.x
IP Ac
N146
Main line 3
Lc Lc
3.2.0
Area 3
CE1P3127en
30.08.2007