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Current estimates indicate that the number of Industrial Ethernet devices shipped will double in next two years. Modbus TCP and Ethernet/IP together represents already more than 50% of the number of units shipped. With Modbus/TCP, Schneider Electric has been an early promoter of solutions based on standard Ethernet components. Advantages of this strategy are numerous: continuous chip cost reduction, continuous performance increase, multiple vendor sources, etc. Still, in order to guarantee determinism of industrial applications, an Ethernet network used to convey real-time data had to be isolated from other networks. One reason was to avoid non real-time data exchanges from impacting transfer time and processing time of critical requests such as those of an I/O scanner.

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Format:PDFSize:485 KB
Date:Aug 2007
Pages:11
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