The Ethernet advanced physical layer (APL) defines switched architecture. Cross talk between instruments is impossible, which enhances communication stability and has a long-lasting positive effect on availability. Learn more about the Ethernet-APL infrastructure on this page.
There are two types of switches to support the Ethernet-APL infrastructure and just three principle product concepts that enable any type of topology for the field of the process plant. The switches that connect to the Ethernet backbone support redundancy and resiliency concepts for high availability.
The Ethernet-APL power switch connects the Ethernet-APL network to the facility Ethernet or backbone. It also provides power to the trunk line. This power switch is typically installed in the cabinet inside the control room and is externally powered.
Field switches provide power to the spur line where the instrument is connected. The spur has lower requirements for signal strength and power. Two types of field switches enable any kind of topology—the Ethernet-APL field switch and the Ethernet-APL DIN-rail switch.
The Ethernet-APL field switch for Zone 1 / Div. 2 installation receives power from the trunk. It connects APL spurs to the trunk. Outputs are intrinsically safe, supporting connections into Zone 0 / Div. 1.
The Ethernet-APL DIN-rail switch is a field switch for installation in a control cabinet or junction box. It connects Ethernet-APL spurs to the plant’s Ethernet backbone. It draws power for itself and the spurs from external auxiliary power.
Ethernet-APL enables continuous communication across all hierarchy levels. Learn more about the pioneering technology …
From decisions to planning, installation, and commissioning up to operation and maintenance: Discover how to make the most out of your fieldbus infrastructure …