| 摘要 |
<p>PURPOSE:To surely recognize alarm generating conditions by operating a key which turns on/off a graphic screen where alarm applies to a generation place when some kind of alarm is generated during the control-operation of a plant. CONSTITUTION:When an alarm on/off detection signal is received from a control station FCS in an operator station OPS, alarm reception is processed at first. Then, a graphic screen retrieving means 13 obtains the tag number of the alarm from a tag list which is previously prepared in a data base and retrieves in which screen within the plural graphic screens the tag number is registered from a graphic classification tag number table. Subsequently, a key turning means 14 retrieves from which LED table to which LED table the graphic screen is corresponding and, then, drives the LED lamp so as to turn on/off and execute an output when the alarm detection signal is on.</p> |
