| 摘要 |
<p>PURPOSE:To prevent alarm in vain at starting up or shut down of a plant. CONSTITUTION:During a transitional operation of a plant such as initial starting up or shut down of the plant, alarm which is unncessary for confirmation, in alarm for each kind of process signal which is generated during start up or shut down or the transitional operation of the plant, is stored at an alarm memory file 3, by turning a mode indicating mean 4 into an alarm memory mode. And them during starting up, shut down and the transitional operation of the actual plant, the mode indicating mean 4 is turned into an alarm control mode and therewith, against the process signal for which alarm output conditions are satisfied during the transitional operation of the plant, the alarm thereof is made not to be output if the alarm is registered as non-alarming- required through searching the alarm confirmation file 3, in order to avoid not necessary alarming in vain.</p> |
