Ethernet-a natural evolution for remote I/O

Ethernet is one of the communication medium available for remote I/O. It combines the low cost of RS232 with the multidrop capability of R8422/485, and provides a clear standard for communications. That medium is Ethernet, and it represents a logical evolution in the development of remote I/O systems. The same economic forces that drove the personal computer into the industrial marketplace are now working to drive Ethernet there, too. While these networks have traditionally been used in office environments, industrial users cannot afford to ignore the cost and performance benefits of Ethernet in their factories. Ethernet has become the medium of choice to communicate management data throughout the enterprise. Off-the shelf solutions are discussed and network considerations are analysed. Some of the possible applications are then outlined.