| 摘要 |
<p>PURPOSE:To accurately grasp the plant state by changing the data recording cycle according to the changing rate of the plant data. CONSTITUTION:A changing rate computing part 8 calculates the changing rate of the collected data sent from a plant for each input point. A data recording cycle setting part 9 tentatively sets the data recording cycle for each input point based on the conditions of the data recording cycle corresponding to the changing rate calculated by the part 8 and the changing rate set previously. Then the part 9 outputs the shortest data recording cycle. A data computing part 7 records the collected data in a recording part 6 based on the shortest data recording cycle.</p> |
