| 摘要 |
<p>PROBLEM TO BE SOLVED: To retrieve a data file which meets trigger conditions from a data file group gathered up to alarm generation, and then make it possible to display it on a screen together with data before and after it if a fault occurs to a plant of iron and steel, chemicals, etc. SOLUTION: A data gathering part 3 gathers object data set in a gathered data setting part 2 from a plant controller 1 and generates a gathered data file group 4. According to an alarm and an elapsed time set in an alarm setting part 5, a data file group is limited and a trigger condition match detection par t9 detects a corresponding data file from the limited data file group according to the trigger conditions set in a trigger condition setting part 8 and the numbers of read files before and behind the retrieved file; and a display data generation part 10 generates a retrieval result file 11 by putting the retrieved file together with the data files before and behind it and a data display editing part 12 displays it on a CRT display unit 13.</p> |
