| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a means enabling prompt transmission in a node in which telegraph transmission is delayed, in an air conditioner in which outdoor and indoor units in a plurality of refrigerant systems are interconnected through one transmission line for communications. <P>SOLUTION: In a communication means avoiding collision by setting a random value in transmission waiting time T1 before transmission, by reducing a maximum value of the transmission waiting time T1 along with passage of time after completion of previous normal transmission, priority to the node in which telegraph transmission is delayed is increased. By resetting the priority immediately after completion of normal transmission and setting the maximum value of the transmission waiting time T1 in accordance with communication traffic, competition of transmission rights and collision of transmitted telegraph are avoided. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
