Patent ID: 8353458

Claim:
A network system, comprising: a cable set to which a non-volatile memory is mounted; and a device to which the cable set is connected, the cable set having cable side read/write only communication means for reading/writing data from/to the device, the device having device side read/write only communication means for reading/writing data from/to the cable set; set information read means for reading set information used for performing an initial setting of the set information read means from the non-volatile memory of the cable set; initial setting means for performing an initial setting on the basis of the read set information; set information storage means for storing the set information read from the non-volatile memory; set information write means for writing the set information stored in the set information storage means to the non-volatile memory; and copying means for copying the set information stored in the set information storage means or the non-volatile memory to the other based on a predetermined rule.