| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a display device for plant control system capable of performing an operating work comparable to a dedicated display device while maintaining cooperation with general purpose application. SOLUTION: A window set managing means 2 sets a master window MW and slave windows SW1, SW2 as a window set and controls plural window sets. A window set switching means 4 switches mutual superposition of plural window sets and window superposition between the window set and a general purpose window. A system message display means 5 displays message generated in a plant on the highest position of the window superposition by as a system message window SMW.</p> |
