| 摘要 |
<p>In a system where transmission right communication device 1-2 in plural communication devices 1-1 through 1-16 connected with a bus 3 transmits data to transmission requesting communication devices 1-1 and 1-3 through 1-16, the transmission right communication device transmits a collecting command, and when a transmission request is made, the respective transmission requesting communication devices add their self addresses to the collecting command so as to transmit the collecting command, and the transmission right communication device receives the collecting command to which the self addresses of all the transmission requesting communication devices making the transmission request are collectively added. <IMAGE></p> |
