1 Scope
This document is applicable to process automation equipment using a 10BASE-T1L compliant Physical Layer (PHY). Ethernet-APL intrinsically safe profiles with different predefined entity or limitation parameters (for example voltage, current, power, capacitance, inductance, cable length) simplify the examination of the interconnection of different Ethernet-APL ports. Furthermore, this document is also applicable to factory and building automation and control equipment using a 10BASE-T1L compliant, and Power over Data Lines (PoDL) compliant Physical Layer (PHY) for non-intrinsically safe Ethernet installations.
NOTE In this document the term Ethernet-SPE is used for PoDL compliant PHY.
The following technical features are part of this document:
topology with trunk and spur installation capability;
2-wire technology (full-duplex communication data rate of 10 Mbit/s);
long distance (refers to cable lengths of several hundred meters, with spans up to 1 000 m);
intrinsic safety (installation of Ethernet-capable field devices in hazardous areas);
power supply to field devices over the same 2-wire cable used for data communication;
non-intrinsically safe Ethernet installation in factory and building automation.