Industrial Communication with Ethernet and Fieldbuses
MartinMüller · 自动化博览 · 2004
With its open protocol structures, its strengths in universal communication and its free choice of topology, Ethernet has long since established itself as the standard in office communication. In the field of industrial communications, on the other hand, various Fieldbuses have emerged to date as the defacto standard. This is largely due to geographical reasons or specific application requirements. In countless machines and systems worldwide, they serve to connect sensors and actuators with control technology. Ethernet is already used in the industry for communicating between various machines and subsystems. It is therefore natural and obvious that the industry should also be interested in using the global communication standard Ethernet for connecting sensors and actuators. However, this is not possible without modifying or adding to the standard Ethernet technology. The reasons for this include the complexity of the protocol, the processing power required in each simple device and the increased project efforts.As a result, various companies and organizations are working on Ethernet extensions, especially those that will enable real-time processing.