ROBOT SYSTEM AND ROBOT CONTROL METHOD

A robot system including: a robot and a controller, the controller is configured to conduct: a region generating process that generates a robot inclusion region which includes the robot and the like and whose area increases as a speed of the robot increases, an entry prohibited region near the robot, and a speed limit region along the robot side edge of the entry prohibited region; an entry detecting process that detects whether or not the generated robot inclusion region enters the entry prohibited region or the speed limit region; a speed limiting process that reduces operating speed of the robot if the robot inclusion region enters the speed limit region; and a power cutoff unit that immediately stops the robot if the robot inclusion region enters the entry prohibited region.