| 摘要 |
<p>PURPOSE:To improve the identifying function and the reading function of an alarm at the time of an abnormality occurrence in a plant by outputting only the alarm signal to display the presence or absence of an alarm displaying window provided with a manual signal generating means to a displaying means when the manual signal generating means is energized. CONSTITUTION:When the abnormality occurs at one part of the plant, and the alarm signal is generated through the fluctuation of a process quantity, the corresponding window out of alarm displaying windows 3 is lit up by the alarm signal, and an operator is notified. When the operator pushes the lit-up window, the contact signal of its push button switch displays the measurement value of the process quantity included in the alarm signal on a CRT 7, and supports the counter measuring work of the operator. When a system is supervised in a lump, by pushing the lit-up alarm displaying window 3 of the system, even when several abnormal process quantities to generate alarm signals exist, all the quantities can be displayed on the CRT 7. Thus, the process quantity, etc., to be related with an alarm item can be grasped promptly, easily and suitably.</p> |
