To prevent a robot device from moving in an area causing failure and breakage.

A self history of movement is stored in a storing means, and if communication with a communication device 51 is disabled, the moving action of the robot device 1 is controlled to move the robot device 1 into a range capable of communication with the communication device 51 according to the movement history. The robot device 1 can be thus easily made to act only in a given range, so that the robot device 1 can be prevented from moving into a place causing failure and breakage.