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Application Examples

Coupling lines over Ethernet (LAN)

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Siemens ET G1 · 10/2008

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Overview

Connect main and backbone lines over KNXnet/IP

With the new KNXnet/IP standard, KNX telegrams can be transmitted

over Ethernet (LAN). This enables new applications and solutions.

Existing network infrastructures and technologies are used to

transmit KNXdata over greater distances.

Links between buildings and/or building levels can be clearly

and easily implemented using KNXnet/IP.

The solution:

The benefits:

• LAN as main and backbone line

• Supports data transmission over greater distances

• Utilization of existing data networks and components (LAN)

Proceed as follows:

• Connect an N 146 IP router to each KNX line

(instead of an N 140/03 line coupler)

• Connect the N 146 IP router over a multicast-capable LAN

• Commission each N 146 IP router like a "conventional"

line/backbone coupler using the ETS3.

You require the following:

• N 146 IP router (5WG1 146-1AB01), 1 x per line

• 24 V power supply for N 146 IP router (e.g. 4AC2 402)

• Ethernet patch cable or LAN, depending on the size

• ETS3 (current version see http://www.knx.org)

Note:

LAN stands for Local Area Network. In LANs, data transport is organized over

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 (network switches,

routers) this requires the appropriate configuration.

KNX device

LAN (multicast-capable)

N 146

IP router

N 146

IP router

I2_15413

KNX KNX

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