ABB proposed the use of Ethernet-APL (Advanced Physical Layer), a cutting-edge standard that enables both power and data communication over a single shielded twisted-pair cable. This approach dramatically simplifies wiring and significantly reduces installation costs.
Ethernet-APL is designed for use in hazardous areas (Zone 1), where conventional industrial Ethernet solutions are not viable. It also allows for greater flexibility in device placement, enabling field instruments to be installed in locations without a local power source.
Crucially, Ethernet-APL supports the transmission of multiple process variables such as flow, pressure, and temperature using standard Ethernet protocols, ensuring seamless integration with the site’s existing PLC infrastructure.