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Advanced Physical Layer
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Advanced Physical Layer
Ethernet Advanced Physical Layer (Ethernet-APL) 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 (2-wire) cable as well as protective measures for the safe use within explosion hazardous areas.
Because it was created specifically for demanding industrial applications, Ethernet-APL, as a subset of the widely adopted Ethernet standard, offers a high level of robustness for extremely 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.
Being a physical layer, Ethernet-APL is independent of any protocol or communications stack and designed for wide adoption and application in process automation.
Ethernet-APL is a specific, single-pair Ethernet based on 10BASE-T1L as defined in IEEE 802.3cg, with additional provisions for process industries. The Ethernet-APL communication is thus part of and fully compatible with the IEEE 802.3 Ethernet specification.
Ethernet-APL communication relies on 10 Mbit/s full duplex communication transported via one twisted pair cable. It supports all major network topologies including the well known trunk & spur topology which is widely utilized in process industries. The maximum trunk length is 1000 meters into Zone 1, Div 2. The maximum spur length is specified as 200 m into Zone 0, Div. 1.
Ethernet-APL incorporates a number of enhancements especially tailored to the demanding requirements of process and other industries like Intrinsic safety and adds port profiles for optional power supply and hazardous area protection.
Intrinsic safety is a vital requirement especially by the worldwide process industries which demand an easy to implement solution to control and power field instruments in explosion hazardous areas. For this reason, optional intrinsic safety is fully integrated into the definitions of the Ethernet-APL communication standard.
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Advanced Physical Layer
Ethernet Advanced Physical Layer (Ethernet-APL) 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 (2-wire) cable as well as protective measures for the safe use within explosion hazardous areas.
Because it was created specifically for demanding industrial applications, Ethernet-APL, as a subset of the widely adopted Ethernet standard, offers a high level of robustness for extremely 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.
Being a physical layer, Ethernet-APL is independent of any protocol or communications stack and designed for wide adoption and application in process automation.
Ethernet-APL is a specific, single-pair Ethernet based on 10BASE-T1L as defined in IEEE 802.3cg, with additional provisions for process industries. The Ethernet-APL communication is thus part of and fully compatible with the IEEE 802.3 Ethernet specification.
Ethernet-APL communication relies on 10 Mbit/s full duplex communication transported via one twisted pair cable. It supports all major network topologies including the well known trunk & spur topology which is widely utilized in process industries. The maximum trunk length is 1000 meters into Zone 1, Div 2. The maximum spur length is specified as 200 m into Zone 0, Div. 1.
Ethernet-APL incorporates a number of enhancements especially tailored to the demanding requirements of process and other industries like Intrinsic safety and adds port profiles for optional power supply and hazardous area protection.
Intrinsic safety is a vital requirement especially by the worldwide process industries which demand an easy to implement solution to control and power field instruments in explosion hazardous areas. For this reason, optional intrinsic safety is fully integrated into the definitions of the Ethernet-APL communication standard.