| 摘要 |
<p>PURPOSE:To facilitate a dynamic characteristic analysis at the time of a plant accident by combining a time chart display means, an enlargement display means in the vicinity of a designated time and a tendency display moving means for displaying the tendency of the process quantity. CONSTITUTION:A process value saving means 11 of an electronic computer 2 inputs and reserves all the process quantities being an object of a tendency display in a reserving period DELTAt1 through an analog input part of a process input device 1. On the other hand, a contact operation analyzing and memory means 12 inputs and stores all contact states being the object of an operation analysis whenever the contact state is varied, through a digital input part of the process input device 1. Also, when a state variation of a contact determined in advance is detected, a process value memory means 13 is started. When a request for displaying a process value A2 on a screen display device 4 is executed, a tendency display means 14 and a time chart display means 15 are started. The value is displayed on the screen display device by an operation of the tendency display means 14 and the time chart display means 15.</p> |
