The EtherCAN/3-FD enables remote access to CAN FD or CAN CC buses via Ethernet. Three different modes of operation allow a versatile integration of a CAN bus into a system with LAN connectivity, i.e. EtherCAN mode or platform-independent client or server modes. Furthermore, two EtherCAN/3-FD gateways can operate autonomously in a bridge mode to seamlessly connect two CAN networks via Ethernet.