User Manual

15-15
Siemens Switzerland Ltd www.siemens.com/gamma 2019
Building Technologies Division
Technical Information and Application Examples
Application Examples
Coupling KNX lines via Ethernet (LAN)
Connect main and backbone lines via KNXnet/IP
The new KNXnet/IP standard enables KNX telegrams to be transmitted
via Ethernet (LAN), which leads to new applications and solutions.
Existing network infrastructure and technologies are used to transmit
KNX data over longer distances.
Connections between buildings or floors can be clearly and easily
implemented with KNXnet/IP.
Benefits
• LAN as the main and backbone line
• Data can be transmitted over longer distances
• Existing data network and components (LAN) can be used
Follow these steps
• Connect an IP router N 146/02 to every KNX line (instead of a line
coupler N 140/03)
• Connect the IP router N 146/02 via a multicastenabled LAN
• Commission each IP router N 146/02 just like a “conventional” line/
backbone coupler using ETS
• Observe the related safety and security requirements governing the
LAN
You will need
• One IP router N 146/02 per line
• 24-V power supply for IP router N 146/02, e.g. Power over Ethernet,
unchoked bus voltage
• Ethernet patch cable or LAN, depending on the size
• ETS; see knx.org for the latest version
Note:
LAN stands for Local Area Network. In LANs, data transport is orga-
nized using the IP (Internet Protocol) – the standard network protocol
on the Internet.
Multicast-capable: multicast telegrams can simultaneously operate
several IP devices in the LAN. In the case of network components (net-
work switches, routers) this requires the appropriate configuration.
The solution
KNX device
KNX device
KNX device
LAN (multicast-capable)
IP router
IP router
I201_15413
KNX KNX
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