Area/line couplers and IP router - Basic Documentation - RMK770-1

Communication via the KNX bus

Product Family
Synco
Product Group
Air conditioning controller
Content Language
English
Content Type
Basic Documentation
Status
Valid
Date
2013-04-08
Document No
CE1P3127en
Download ID
A6V10088170
Stock No.
BPZ:RMK770-1
Product No.
RMK770-1

Use of couplers

Complex networks covering large areas may require area and line couplers for two main reasons.

  • When the KNX network comprises more than 64 bus devices.

  • When the network would exceed the permissible limits without couplers.

A network which uses area and line couplers makes it possible to create "communication islands" with the aim of restricting data traffic across areas or lines to a minimum. The couplers link the "communication islands" on the basis of the network layer (the router function of Layer 3 of the OSI reference model).

Siemens area/line coupler

The recommended area/line couplers are supplied by Siemens, order numbers:

  • 5WG1 140-1ABx3, short code N140/x3
    bus connected to main line and line via bus terminals.

For further information see the product description and description of functions (enclosed with the device) or under:

Use of IP routers

IP1) routers are required when a KNX network needs to be connected to an IP network.

As a device, the IP router is not technically the same as the area/line couplers. Instead of establishing a link within KNX, a "KNX-IP network" link is created, whereby the IP router connects a KNX area or a KNX line to an IP network.

1) IP = Internet Protocol: Network protocol for data traffic, routing and, in the case of internetworking, for global, addressing.

Siemens IP router

The recommended IP router is supplied by Siemens, order no.:

  • 5WG1 146-1AB01, short code N146
    Bus connected via bus terminals, IP network connected via RJ45 socket

For further information see the product description and description of functions (enclosed with the device) or under: http://www.siemens.com/knx-td