The F-series FENA-21 is a 2-port Ethernet adapter supporting several communication protocols: PROFINET IO, EtherNet/IP and Modbus TCP. The selection for the protocol is done via a parameter in a drive.
The CX9020 is a compact, DIN rail-mountable Ethernet control system with 1 GHz ARM Cortex™-A8 CPU. The connection for the Beckhoff I/O systems is directly integrated into the CPU module.