| 摘要 |
<p>PURPOSE:To facilitate management of operation information and to improve the reliability by gathering the state of a corresponding operation end at the time of selecting a device as operation object to confirm whether this operation end is normal or not and displaying an abnormality message on a CRT display device in case of abnormality. CONSTITUTION:An operator confirms the device to be operated on a plant system diagram displayed on a CRT display device 1 and selects an operation end 4 of this device. A select signal So of the operation end is inputted to a lower-order controller 3, and this controller 3 gathers trouble information of the operation end 4 corresponding to the operation end index by an operation end abnormality signal Sv and gathers information of switch states on a central operation board 6 through an input/output signal 5 as a switch state signal Ss. Then, it is discriminated whether the corresponding operation end has trouble information or not. If it has trouble information, the controller 3 sends an abnormality signal Se to a higher-order controller 2, and trouble information is displayed on the screen of a CRT display device 1 from the higher-order controller 2 to prompt the operator to indication.</p> |
