| 摘要 |
<p>PURPOSE:To eliminate the restriction of the expansion of a display device and to handle an increase in the number of monitor items by retrieving a registration file corresponding to a monitor item which is selected and inputted, and selecting and outputting a signal of plant data corresponding to the monitor item. CONSTITUTION:A monitor item is selected and inputted from a select input board 11, a selecting means 13 checks whether or not there is the input monitor item is in the data registration file, and when there is the item, it is decided whether data of current and last monitor items are different or not. When they are different, a select address in the registration file corresponding to the selectively inputted monitor item is read in by a select address read means 15 and plant data in the read-in select address is read inputted to generate measurement data by a measurement data converting means 16. The generated measurement data is displayed on a display device 19 through a display output means 18. Consequently, measurement data corresponding to several monitor items can be displayed optionally on one display device and the data file wherein monitor items are registered can be retrieved by internal processing.</p> |
