FD-10 is an industrial PROFIBUS DP-slave unit available in three different models: FD-10 P, point-to-point, FD-10 A, addressed, and FD-10 N, network, it can transmit PROFIBUS DP-data via leased lines, dial-up modem or radio systems without using special software drivers or special PLC-cards. FD-10 can be used to transmit information between different PROFIBUS DP-networks. All Westermo fieldbus adapters use the same protocol to communicate with each other via the serial interface.