| 摘要 |
PURPOSE:To reduce the cost of a system and to establish reliability by reducing the load on a host computer and a communication line and diversifying the danger of the system by eliminating the fear losing all data even though the host computer is down. CONSTITUTION:A signal from each measurement device is collected by an equipment 2 at the field side. By storing it, the processing such as monitoring of upper and lower measurement values, storing daily report data, and storing sampling data for graph display is performed. When the measurement values exceed the upper limit value and when they are under the lower limit value, the processing result is supplied through a communication line 3 to perform warning processing and graphic display processing. In other cases, the processing result is transferred from the equipment 2 to the equipment 1 once in a day based on the request from an equipment 1 at the side of monitoring room, and it is processed. |
