| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a data transmission apparatus and data transmission method, for properly transmitting data even when failures simultaneously occur in multiplexed transmission lines. <P>SOLUTION: A master device 1 and a plurality of control devices 2a-2f are connected via duplex transmission line systems A and B. The master device 1 simultaneously transmits the same transmission data to the transmission line systems A and B. At this time, each of the control devices 2a-2f monitors whether data can be received from one transmission line system within a predetermined monitoring time after data reception from another transmission line system. When data cannot be received, reception data are transmitted to the transmission line of a system in which the data cannot be received. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
