| 摘要 |
PROBLEM TO BE SOLVED: To easily and securely recognize a communication route such as whether communication is executed to a reader from more than two communication controllers. SOLUTION: An address setting part 33 previously and selectively sets the address of a communication controller 6, and it is confirmed that not all recognition processings are terminated. An identification command to which the address of one communication controller 6 is given is selectively transmitted from a repeater 3. When the given address is matched with a self-address, the communication controller 6 transmits the identification command to the respective readers 2. When the reader 2 receives the identification command, the address of the communication controller 6 is added as an identification response and it is transmitted. Such processing is repeated on all the communication controllers 6 and it is checked that communication is appropriately executed. |
