Advanced Physical Layer – The technology:

Fast, long, safe

Advanced Physical Layer – The technology:


Ethernet-APL uses the two communication standards 10BASE-T1L and IEC TS 60079-47, 2-Wire Intrinsically Safe Ethernet (2-WISE). The network technology allows data from sensors and field devices in the process industry to be transmitted over long distances. Various IIoT devices can be integrated into the network infrastructure. The advantages:


Increased system availability, more innovation

Data from field devices can be easily recorded, analyzed and used with Ethernet APL. This ensures and increases system availability and enables the implementation of innovative IIoT solutions from the field device to the cloud.


Ethernet-APL: The indispensable basis for the digitalization of process plants

Ethernet-APL opens up a new dimension for the digitalization of process plants by enabling direct digital communication right up to the sensor. Compared to other intrinsically safe fieldbuses (such as 4..20mA/HART), gateways previously limited the selection and quantity of data as well as the speed. APL removes these limitations and thus enables the comprehensive digitalization of systems.


Schematic layout
of an Ethernet APL network



Several manufacturers offer reliable, industrial-grade and easy-to-assemble APL PCB connectors as well as the implementation of 2-wire Ethernet PHY in devices.
APL technology is also supported by numerous standardization organizations such as PROFIBUS and PROFINET International (PI), the ODVA, the Fieldcom group and the OPC Foundation.


Different connectors for SPE and APL

SPE for industrial and building automation primarily includes connectors with miniaturized mating faces, patch cables, field attachable plugs, M8 and M12 adapters as well as IP20 and IP67 sockets in various outlet directions. In the APL specification, the process industry relies on classic terminals with screw or tension clamp connection as well as classic circular connectors in M8 and M12.