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Application Examples

Remote access to several locations

18/11

Siemens ET G1 · 10/2008

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Overview

Remote operation and remote visualization

In many cases, several locations need to be managed

simultaneously. There are many such examples:

• Monitoring of cooling temperatures in several supermarkets or

storage houses

• Monitoring of fans for failure

• Monitoring of temperature and dampness in several

greenhouses.

It is now possible to carry out these monitoring tasks centrally

over the Internet/Intranet from absolutely anywhere. This saves

you human resources, time and money. And the Internet/Intranet

is available everywhere. Commissioning is further facilitated by

the fact that distributed locations can be configured identically.

The solution:

The benefits:

• Plants and locations can be remotely visualized, controlled

and monitored over existing networks

• Simple commissioning thanks to options for identical

configuration of different locations

Proceed as follows:

• Connect one N 148/21 IP interface per location to the KNX

• Connect the N 148/21 IP interface to the LAN

• Configure the N 148/21 IP interface over the Intranet/Internet

• Define the N 148/21 IP interface in your visualization

program/ETS3

You require the following:

• N 148/21 IP interface (5WG1 148-1AB21), 1 per location

• 24 V power supply for N 148/21 IP interface

(e.g. 4AC2 402)

• IPAS ComBridge Studio visualization software

(see chapter "Display, Operation")

• 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.

• VPN (Virtual Private Network) lets you set up a secure subnetwork over

an open, unsecured network (Internet, wireless network) by protecting

all communication against access or being tapped into by unauthorized

third parties. This is achieved by means of "tunneling" the data traffic over a

VPN server, which means that any connections must be authenticated and

that all data is also encoded.

Internet VPN connection

or Intranet/LAN

KNX device

Location 1

Location 2

Location 3

KNX device

N 148/21

IP interface

N 148/21

IP interface

N 148/21

IP interface

I2_15416

KNX

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