Weidmuller SL-MOD-GW Instrukcja Użytkownika Pobierz pdf (Strona 36)

A.36

WAUS Data Products Main Line Catalogue 2013

Active Components

Separation of Ethernet networks in the factory

An industrial manufacturing network or an industrial

machine network and a typical ofce network use the

same Ethernet standard but are nevertheless totally

different. Where as in the ofce network larger volumes

of data and the associated sluggishness of the network

is completely acceptable, however an excessively long

response time in an industrial network can lead to

downtimes and malfunctions. Complete isolation of the

two networks is innapropriate, and for the rst time there

is the chance of using the same network for all procedures

in the company. Procedures become more transparent, the

management and technical workloads can be reduced. The

exchange of data is considerably simplied and decidedly

more efcient. There are many options for isolating and

prioritising network data, e.g. VLAN, QoS for layer 2, etc. A

router can lter the data from the ofce and provide added

features such as integrated rewall, Network Address

Translation (NAT), Port Address Translation (PAT) and

remote access via a Modem that turns such a router into an

efcient aid for achieving separation between networks.

Only authorised users can access the protected network

from outside and only certain, enabled devices can transmit

data out of the protected network. The NAT/PAT feature

enables a machine with its own IP subnetwork and several

network users to remain concealed from the outside world

behind a unique IP address. Access routines to the

IP address from outside are automatically forwarded to a

predened IP address in the network behind the router. In

this way the device can remain accessible from outside

but only as required. The option of concealing a complete

machine behind an IP address reduces the installation and

management workloads for the machine user. In addition,

the router can be selected via an external modem, thus

enabling access to the router and the machine beyond,

without compromising the corporate network. Such access

routines are carried out via PPP and PAP or Call back with

Virtual Private Network (VPN). This means that a high

security level can always be guaranteed.

Connection to the Internet

Weidmuller’s Industrial routers are available in stand alone

Din Rail mount in Full Gigabit pass through with the option

of UMTS (3G) quad band connection for remote sites, or

as a technician connection, or as a 19” rack module for

whole of plant communication and control over 3000 IP

addresses.

All models can communicate to external dial up or ADSL

modems for connection to the Internet providing packet

and trafc ltering and security tasks. All models provide

remote monitoring utilising latest techniques allowing

engineers and IT Proffessionals acces to remote or locat

routers for adjustment, conguration and monitoring.

The typical applications for routers are

• To separate Ethernet networks for data security

• To separate Ethernet networks for different subnets

• To separate factory networks from ofce networks

for reliability

• To allow System integrators remote access without

access to the corporate network

• To enable an Internet link

Industrial Routers

The gateways between Ethernet worlds

Active Components | Industrial Routers

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