Slave unit and servo driving system

A slave unit that drives a power source including a plurality of servo motors and/or a servo motor with a plurality of windings using a plurality of amplifiers on the basis of a command from a high-order controller, comprising:

• a storage unit stores servo internal statuses indicating the respective statuses of the plurality of servo motors and/or the respective statues of the plurality of windings, judgment data indicating the content of a set parameter, and resource data indicating at least the configuration of the plurality of amplifiers and the power source;
• a servo internal status copying judgment unit, on the basis of the judgment data and the resource data, the servo internal status copying judgment unit determines one servo internal status of the plurality of servo internal statuses to be a copying source, determines at least one remaining servo internal status to be a copying destination, and judges whether to copy the servo internal status of the copying source to the copying destination to commonalize between the copying source and the copying destination;
• a servo internal status copying execution unit copies the servo internal status of the copying source to the copying destination on the basis of a result of the judgment by the servo internal status copying judgment unit;
• and
• a servo control unit outputs each of the plurality of servo internal statuses to each of the plurality of amplifiers to control driving of the power source.