| 摘要 |
PURPOSE:To lighten the burden of a transmission line by transmitting an analog output data to a station to be requested, when the analog data calculated by a requesting station is larger than a variation rate set in advance. CONSTITUTION:A requesting station 1 sets the allowance rate of a variation of an analog output data which is monitored by the requesting station itself, as an output deviation set value DV, and registers it in an analog output regis tration file. Also, the requesting station 1 registers an analog output data calcu lated by the first input processing, and an arithmetic processing which is execut ed continuously from said processing, in the previous output data VO' of the analog output registration file. Whether a difference ¦VO-VO'¦ between the previous output data VO' and the present output data VO is larger or smaller than the output deviation set value DV set in advance is compared, and when the difference is larger than the output deviation set value DV, the previous output data VO' is updated to the present data VO, and transmitted to a station to be requested 2. |
