| 摘要 |
<p>PURPOSE:To provide a process control system monitoring device which can display a monitoring object on a displaying screen and can inform of the effect that monitoring is impossible, by a displaying color, even when the condition of the process cannot be monitored. CONSTITUTION:This device is provided with a communication system abnormality detecting means to detect the data communication system abnormality, and a displaying color changing means not to change the displaying shape of the screen displaying when the abnormality is detected and to change the displaying color; when the condition of the process cannot be monitored, for example, in an annunciator displaying screen, an alarm name is white and an alarm window is black, and in a TAG menu displaying screen, a name (TANGO) is white an displayed by classifying it from the displaying at the ususal time. For that reason, by the screen of a color CRT display 3, information that the existence of the object to be monitored and the condition in which monitoring cannot be performed are obtained can be performed, the monitoring at the time of plant operation and recognition in the operation are made clear.</p> |
