SC09FPCR is a Profibus DP fiber optic Repeaters, supporting upto 2 PROFIBUS DP fieldbus ports and upto 2 of 155M Dual Fiber optical interfaces. It offers optical fiber redundant ring network function, when fiber optic has a fault somewhere, the system will rebuild the network link within 20ms, to guarantee the normal system communication. It support optical fiber link failure and bus error alarm output and LED indication This equipment support dual network redundancy and fiber optic ring network. SC09FPCR simultaneously supports point to point, star, daisy chain bus, ring network and mixed network topology. Dual electric channels are logically independent.