| 摘要 |
PURPOSE:To collect emergent information without delay, by performing the polling control of the 2nd mode polling only emergent information and the polling control of the 1st mode performing general polling, serially in time. CONSTITUTION:A monitor station device 1 generates a polling signal describing the number of a station device to be monitored, head adress information of word information desired to be collected and final address information of the word information desired to be collected. The device 2 incorporates emergent data generated in the device itself into emergent word information. The device 1 performs the 1st mode polling control collecting the information for a plurality of words' share in each station devices to be monitored with the said head and final address information in a polling signal and the 2nd mode polling control collecting only the emergent word information in time serially. |
