| 摘要 |
<p>PURPOSE:To quickly display the changed state even when the state of a certain monitoring point is changed by controlling the states of monitoring points unitarily within a monitoring point control table and securing the correspondence among these controlled states via an entry conversion table set on a display screen. CONSTITUTION:A state control part 1 updates the state corresponding to the relevant monitoring point stored in a monitoring point control table 2a every time the state of the monitor point has a change. At the same time, a state display control part 3 reads the entry conversion data corresponding to the displaying screen out of an auxiliary memory when a display screen 4 is switched and maps (loads) the conversion data into an entry conversion table 2d with the 1:1 correspondence secured to the table 2a. Thus the correspondence is secured between the state of the monitoring point and the entry of the working screen 4. As a result, the part 3 can easily and quickly display the states of monitoring points on the screen 4.</p> |
