The KEB C6 Combicontrol bus coupler is part of the C6 Remote I/O system and is used to connect I/O modules to an EtherCAT network while maintaining EtherCAT communication through the connected station.
It generates the system voltages for the attached modules and serves as the interface between the network and the local I/O slice assembly. The coupler is built for DIN-rail mounting and has a compact 25 mm width, which helps keep I/O stations narrow in cabinet installations. The C6 system is modular, so users can combine the coupler with different I/O modules to match the signal and application requirements of the machine. A more accurate description is that the series is a compact EtherCAT remote I/O interface platform focused on modular expansion and distributed field-level integration, rather than a general-purpose controller family.
