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Ethernet Advanced Physical Layer describes a physical layer for the Ethernet communication technology which is especially developed for the requirements of the process industries. The development of Ethernet-APL was determined by the need for communication at high speeds and over long distances, the supply of power and communications signals via common single, twisted-pair cable as well as protective measures for the safe use within explosion hazardous areas.
Being a subset of the widely used Ethernet standard designed especially for demanding industrial applications, Ethernet-APL provides a high level of robustness for highly reliable operation.
Ethernet has long become the standard communication solution in the information technology field, while Industrial Ethernet is the common description of the variant of this standard for the manufacturing and process industries. Ethernet-APL provides the missing link, extending unified Ethernet communication all the way down to field instrumentation.