| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communication network system configured to execute appropriate communication by connecting a control station to a plurality of tributary stations through minimal wire harnesses. <P>SOLUTION: In transferring data from the control station to each tributary station, the control station transmits a first header, number information, and transfer data of the number; each tributary station receives transfer data at a part corresponding to the number information to reduce the number information when detecting the first header on each side close to the control station, and transmits the first header, the reduced number information and the other transfer other than the received transfer data to the side separate from the control station. In transferring data from each tributary station to the control station, the control station transmits a second header; and, when detecting the second header on each side close to the control station, each tributary station transmits the second header to the side separate from the control station, and transmits the transfer data from the other tributary station transmitted to the side separate from the control station and the transfer data of the own station to the side close to the control station. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
