摘要 |
Immediately before a robot 20 starts to move at a high speed, a monitoring area 53 is expanded in a returning direction Y, and absence of an obstacle in the monitoring area 53 is confirmed. During the high speed movement of the robot 20, the monitoring area 53 is expanded forward, so that a safety of an operator is secured, an effective use of a working station area can be made, and an improvement of productivity can be achieved.
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