Siemens ET 790 Series Información técnica descargar pdf (Pagina 260)

Application Examples

Monitoring locations over Ethernet (LAN)

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Siemens ET G1 · 10/2008

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Overview

Demand-oriented maintenance through remote signaling

Some distributed locations need to be regularly checked for

specific states and maintained accordingly. For example, the

states of oil tanks in distributed apartment houses, or the

operating hours of consumers. These states can now be sig-

naled centrally at any location of your choice. This dispenses

with the need for inspections and maintenance at regular

intervals, for example, oil tanks in distributed apartment houses

only need to be topped up when necessary. And the fact that

this method of operation even permits consumers to wait for

favourable oil prices is just one further advantage.

The solution:

The benefits:

• Central status signaling of distributed locations

• Lower maintenance costs

• Optimization of maintenance costs

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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