Weidmuller SL-MOD-GW Manuel d'utilisateur télécharger pdf (Page 2)

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WAUS Data Products Main Line Catalogue 2013

Active Components

Over the past thirty years, Ethernet has become a standard

network technology in the ofce as well as in information

technology areas. The compatibility of Ethernet products

from different manufacturers helped this advance. Ethernet

offers increasing performance at lower and lower prices

allowing for increased growth and market share. A brief

outline of the history of Ethernet is shown below.

Early industrial data communications standardisation was

attempted by using eld bus technology. However, the

variety of protocols and standards make communication

between different eld bus systems very complex and

inconvenient for users.

1980 10 Mbps DIX Ethernet 1.0 protocol

1982 IEEE 802.3 Ethernet protocol

1986 10BASE-T

1995 100BASE-T Fast Ethernet

1998 1000BASE-LX/SX/CX

1999 1000BASE-T

2006 10 Gigabit Ethernet

2010 100 Gigabit Ethernet

Compared to eld bus technology, the following advantages

of Ethernet have caught people‘s eye.

• Open protocol

Ethernet is an open and transparent network protocol

making communication between devices from different

manufacturers very easy.

• High transmission rate

Rates of 10 Mbit/s, 100 Mbit/s and 1000 Mbit/s have

been widely adopted to meet the ever growing bandwidth

requirements.

• Full duplex operation

In Ethernet systems each device operating in full duplex

mode can transmit and receive information at the

same time.

• Various transmission media and topologies

The transmission media can be coaxial cable, twisted pair,

multi-mode/single-mode optic ber. Topologies include bus,

star and ring.

• Continuing development

Ethernet has developed to real-time and wireless stage. With

its compatibility with existing technology it has a very wide

application.

Internet

Router

Camera HMI PC PLC

Industrial Ethernet

Core Switch

Switch

Industrial Ethernet Basics

Active Components | Industrial Ethernet Basics

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