| 摘要 |
PROBLEM TO BE SOLVED: To easily cope with the constitution a change of a system by transmitting a message of which a communication part notifies respective computers in a group that application becomes ready to execute. SOLUTION: When a computer 7 detects the passing of an object to be worked, it sends control data to computers 2 to 4 in order to inform the robot arms of computers 2 to 4 of that. The computers 2 to 4 receive the control data and actuates application programs 15, 25 and 35 to deliver the data. Thereafter, the respective applications inform communication parts 11, 21 and 31 that they are actuated and are in an execution interruption state. The communication parts 11, 21 and 31 send synchronous control messages according to a message format in order to inform the respective computers in a group that the own application programs 15, 25 and 35 can prepare the execution. The messages sent by the respective computers in the group are received by other computers in the group.
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