Ring type optical fiber CAN bus network

The present invention relates to an optical ring network CAN bus, CAN transceiver does not use the CAN bus in a ring network, a ring network using optical fiber CAN bus as the transmission medium. On the ring fiber CAN network, each node includes a CAN module and a photoelectric conversion dedicated optical ring network CAN interface. CAN bus fiber ring network of the present invention, can eliminate clogging fiber ring network CAN, CAN network communication entire fiber reliable, simple, strong anti-interference. So that the anti-interference ability is better than the current fiber optic network CAN CAN twisted-pair network to meet the needs of harsh industrial site.