The Ethernet-APL field switch is the central component in the Ethernet-APL network of every process plant. R. STAHL offers particularly robust and durable field switches specifically for field use, which offer the following advantages:

- Installation directly on site in the field in Zone 1 or 2

- Ideal for harsh environmental conditions such as -40…+70 °C in any mounting position

- Intrinsically safe power supply for APL field devices down to Zone 0

- Comprehensive integrated network and physical layer diagnostics via PROFINET and FDI

- Integrated local display for on-site support during commissioning and troubleshooting

- Built-in Ethernet traffic management for a virtually unlimited number of field devices

- Optional use of fibre optic cables for distances of several kilometres

In addition to the new Ethernet-APL field devices, PROFIBUS PA field devices can also be easily connected to PROFINET using the integrated PA proxy – both in profile modes 3.02 and 4 and with the manufacturer-specific GSD. In combination with our IS1+ remote I/O system, all generations of 4...20 mA field devices, simple digital sensors and actuators, HART devices, fieldbus and Ethernet-APL can be used in a modern Ethernet network with PROFINET.

In addition to innovative Ethernet-APL field switches, R. STAHL also offers the appropriate installation technology for Zone 2 and Zone 1. This means that the Field Switches can be installed individually, in groups or in combination with remote I/O anywhere. Depending on the shielding concept, we offer various options, both capacitive and direct – tailor-made for your new digital system.