CAN-CR210/FO Glass Fiber Version with ST Connector [Extended Temp. Range] Stackable converter from ISO 11898-2 to fiber optic cable The CAN-CR210/FO is used for the conversion of the CAN signal from copper wire (ISO 11898-2) to fiber optic cables. This provides a complete isolation and protection against EM-influences. For creating star or tree topologies, several CAN-CR210/FO can be connected to a CAN-hub via the integrated backbone bus (also in conjunction with CAN-CR200). One special feature of the repeater is, that it separates a defective segment from the rest of the network, so that the remaining network can continue working. After elimination of the defect, the segment is switched into the network again.