| 摘要 |
PROBLEM TO BE SOLVED: To facilitate investigation of a failure and identification of a cause when the failure has occurred after entering into actual operation with a newly installed control computer and a newly installed HMI terminal connected to the newly installed control computer.SOLUTION: In a control computational system where a control computer 51 communicates with a superior system 52 and an inferior system 53, input data from the superior system 52 and the inferior system 53 into the control computer 51 is parallely acquired by a newly installed control computer 1 so as to perform parallel operation when the control computer 51 is replaced with the newly installed control computer 1. In this case, parallel operation is performed by disconnecting an HMI terminal 54 connected to the newly installed control computer 1 and causing communication between a newly installed HMI terminal 2 and the control computer 51 to be performed via the newly installed control computer 1. It means that the system enters into actual operation with the newly installed control computer 1 and the newly installed HMI terminal 2 after performing parallel operation as performing actual operation with the control computer 51 and the newly installed HMI terminal 2. |
