PROBLEM TO BE SOLVED: To provide a network setting device of Profibus-DP (Decentralized Periphery).SOLUTION: A network setting tool 330 of a Profibus-DP has: an automatic setting module 410, using an automatic setting instruction inputted through a user communication module 400, which requests a master device for information on a plurality of slave devices and receives the information and determines the types of the plurality of slave devices with the received information to provide a profile of the type; a network setting module 420 which generates network setting information on the basis of the type and profile determined by the automatic setting module to provide the information to the master device.
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