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ETHERNET • 125GeneralWAGO-I/O-SYSTEM 750ETHERNET TCP/IP5 ETHERNET5.1 GeneralETHERNET is a technology, which has been proven and established as aneffective means of data transmission in the field of information technologyand office communication. Within a short time ETHERNET has also made asuccessful breakthrough in the area of private PC networks throughout theworld.This technology was developed in 1972 by Dr. Robert M. Metcalfe, David R.Boggs, Charles Thacker, Butler W. Lampson, and Xerox (Stanford, Ct.).Standardization (IEEE 802.3) took place in 1983.ETHERNET predominantly uses coaxial cables or twisted pair cables as atransmission medium. Connection to ethernet, often already existing innetworks, (LAN, Internet) is easy and the data exchange at a transmission rateof 10 Mbps or also 100 Mbps is very fast.ETHERNET has been equipped with higher level communication software inaddition to standard IEEE 802.3, such as TCP/IP (Transmission ControlProtocol / Internet Protocol) to allow communication between differentsystems. The TCP/IP protocol stack offers a high degree of reliability for thetransmission of information.In the ETHERNET TCP/IP fieldbus controller developed by WAGO, variousapplication protocols have been implemented on the basis of the TCP/IP stack.These protocols allow the user to create applications (master applications)with standardized interfaces and transmit process data via an ETHERNETinterface.In addition to a series of management and diagnostic protocols, the protocolsMODBUS TCP (UDP) and Ethernet/IP are implemented for control of themodule data.Information such as the fieldbus node architecture, network statistics anddiagnostic information is stored in the fieldbus coupler and can be viewed asHTML pages via a web browser (e.g., Microsoft Internet-Explorer, NetscapeNavigator) being served from the HTTP server in the controller.Furthermore, depending on the requirements of the respective industrialapplication, various settings such as selection of protocols (e.g., TCP/IP,SNMP, etc), watchdog timer, internal clock and security configurations can beperformed via the web-based management system. However, you can alsoload web pages you have created yourself into the controller using FTP.The WAGO ETHERNET TCP/IP fieldbus coupler does not require anyadditional master components other than a PC with a network card. Thefieldbus coupler can be easily connected to local or global networks using theRJ45 connector. Other networking components such as hubs, switches orrepeaters can also be used. However, to establish the greatest amount of“determinism” a switch is recommended. |
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