| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it possible for a slave terminal to execute the same processing contents even in a state in which radio communication between a master terminal and the slave terminal is disabled due to, for example, a communication failure. <P>SOLUTION: A master terminal 110 comprises: a master unit communication failure determination unit 115 which determines that a communication failure is not occurred if the master terminal 110 has received a processing content confirmation request from all of a plurality of slave terminals within a predetermined slave unit communication confirmation request time, and determines that a communication failure has occurred between the master terminal and a particular slave terminal if the master terminal 110 has not received the processing content confirmation request from the particular slave terminal included in the plurality of slave terminals within the slave unit communication confirmation request time; and a communication failure notice unit 117 which gives the plurality of slave terminals except the particular slave terminal a communication failure occurrence notice giving notice of the occurrence of the communication failure during a master unit communication confirmation response time if the master unit communication failure determination unit 115 has determined that the communication failure has occurred. <P>COPYRIGHT: (C)2013,JPO&INPIT |
