| 摘要 |
PURPOSE:To find the cause of trouble quickly, by preliminarily registering a specified event to be marked, and automatically recording the time of occurrence of the registered specified event on a trend graph. CONSTITUTION:On the time base of a trend graph, a specified event, whose time of occurrence is to be recorded, is inputted by a specified-event inputting device 21 and registered in a specified-event registering device 22. A mark-signal generating device 4 judges whether the registered specified event is generated or not based on the amount of processes, which are monitored all the time, and gives the instruction so that the time of occurrence is marked on the trend graph in a trend-graph outputting device 13 when the generation of the event is judged. |
