| 摘要 |
<p>PURPOSE:To quickly deal with the rapid change of data by collecting data at the rate of priority from a controller for which the change rate of collecting data is large. CONSTITUTION:When returning the collecting data from controllers A-F, the controllers A-F calculate the change rate between the data collected the last time and the data collected this time, when this change rate exceeds a prescribed limit vague, a data request frequency change flag is set for executing the data collection preferentially rather than the other controller, this data request frequency change flag and a response data transmission text containing the data collected this time are transmitted to a monitoring device 11, this monitoring device 11 decides the level of the change rate based on the data request frequency change flag inside the response data transmission text transmitted from the controllers A-F and when this decided result shows the larger change rate, a polling signal is transmitted to that controller preferentially rather than the other controller.</p> |
