Abstract: A system for teaching, controlling and monitoring industrial robots includes a storage section storing data describing working positions and motion patterns of the robots, and a teaching section for automatically preparing a teach data of each robot by selecting one of the different working positions and one of the motions patterns for the robot in accordance with the kind of work. The system may further includes a graphic processor for displaying picture images of the robots, their tools and workpieces, and a checking section for searching for robot-robot interference by checking a collection of data describing spaces occupied by the robots, and modifying the teach data to avoid such an interference.