Patent ID: 7778729

Claim:
A robot system, comprising: a plurality of robots, a plurality of robot controllers for controlling the robots, a control network connected to the robot controllers for transmitting and receiving data used for controlling the robots, a separate parallel information network connected to the robot controllers for transmitting and receiving information between the robot controllers, wherein at least one robot controller among the plurality of robot controllers has the function for checking a status of the control network, the at least one robot controller further comprising: communication means for sending a query concerning the status of the control network to each robot controller via the information network, and for receiving a response from each robot controller, the response including the information concerning the status of the control network as viewed from the robot controller that sends the response; check means in the information network for checking the status of the control network as viewed from the at least one robot controller; and display means for indicating (i) the information in the response received from each robot controller and (ii) a check result by the check means.