| 摘要 |
PROBLEM TO BE SOLVED: To enable to collectively check arrival of a telegram to a destination and a response result to an operation request telegram, and to prevent occurrence of a state, where an incommunicable state causes incompatibility of processing relating to a game point with a game machine.SOLUTION: An electronic message transmitted and received between a CU and a Pachinko machine includes a counting serial number added and updated only in occurrence of a counting request from the Pachinko machine to the CU. The CU sends back the same counting serial number in acceptance of the request, and sends back a counting serial number updated by subtracting the counting serial number by 1 in unacceptance of the request. Also, when an incommunicable state occurs after transmission of the counting request, the last final transmission counting serial number is received from the Pachinko machine after recovery from the incommunicable state to determine whether the counting request has been accepted. |
