| 摘要 |
<p>PROBLEM TO BE SOLVED: To discriminatingly display an operation history regarding a local monitor device and an operation history to a large-screen monitor and control unit by displaying the contents of a plant monitor storage table and a large- screen monitor storage table on an operation history display device and controlling the large-screen device with indications of respective plant monitor and control units. SOLUTION: When operation contents for data are left as a history, it is judged which of the operation contents of the plant monitor device 21 and the operation contents of the large-screen monitor and control unit 41 the operation contents are. In the case of the operation contents of the plant monitor control unit 21, they are stored in the plant monitor storage table 23a of an individual history menu. In the case of the operation contents of the large-screen monitor and control unit 41, on the other hand, they are stored in the large- screen monitor storage table 23b of a large-screen history menu. It is judged whether or not there is a request to display respective history menus through an input device 22 and when so, the histories stored in the respective history menus are displayed on an operation history display device 24.</p> |
