| 摘要 |
PURPOSE:To prevent the erroneous display of a message by processing information in a data processing computer only for the change of data concerning the change of a warning message or the condition change of a plant and tottally processing analog warning information in a transmitting unit between the data processing computer and a CRT display processing computer. CONSTITUTION:A data processing computer 2 inputs the basic unit of transmission for respective bit data concerning the warning of the plant or the condition change to be transmitted from a process input device 1 and a generating time. Only the warning information for the change part are transmitted from this data processing computer 2 through a data way 5 to a CRT display processing computer 4. Based on the information, the CRT display processing computer 4 displays the warning message to a CRT display device 7. Thus, the erroneous display of the warning message is eliminated and memory capacity and CPU load are made small. Then, data transmission can be efficiently executed and the synchronization of the same time as the condition change can be obtained. The detection of the condition change time can be exactly executed in a transmitting side. |
