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  • May 2024

    • May 2024

    It only seems like Ethernet is everywhere. Sure, it underpins pretty much all networks, but there remain holdout places where it can't go, or where users are reluctant to send it. This delays or stands valuable signals and increasingly sophisticated data produced by intelligent sensors and instruments in the field, but it also prevents them getting back analyses or instructions that could optimize their processes.
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    Source: Ethernet-APL.org
    Figure 1: Ethernet Advanced Physical Layer (APL) is a two-wire, physical layer designated as 10Base0T1L because it allows trunk lines up to 1,000 meters and spurs up to 200 meters, and delivers 10 Mbps communication speeds to field-level devices. On top of this physical layer, Ethernet-APL communicate using Ethernet protocols, such as TCP/IP, Profinet, EtherNet/IP, HART IP, Modbus-TCP and others. It’s also based on the IEEE 802.3CG single-pair Ethernet (SPE) standard, and added power restrictions defined by IEC TS 60079-47 technical specification for two-wire IS Ethernet (2-WISE).
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