This article discusses technical solutions and application examples for CAN-based systems, which combine electrical CAN segments with fiber optic communication links. The GCAN-208 series module can. The GCAN-208-S series module from Shenyang Guangcheng Technology Co. is an industrial-grade CAN bus to fiber optic converter that integrates one standard fiber optic interface (SC, ST, FC, single mode, multimode, single core, dual core optional) and one standard CAN bus interface., CAN, CANopen, DeviceNet) via fiber optics. With the help of this innovative system, an optical bus, star, tree and mixed structures are possible.