| 摘要 |
PURPOSE:To shorten the communication time of a transaction processor and to realize reverse update, by adding report data on a last transaction result to data on current transaction, and performing transmission to a main controller during the communication of the data on the current transaction. CONSTITUTION:For every transaction, a telegraphic message is transmitted from terminal equipment 10 to a center 30, and this telegraphic message consists of a transaction telegraphic message TEXT1 containing current transaction data and a report telegraphic message TEXT2 containing last report data and fault data; the telegraphic message TEXT1 contains discriminating codes ID1-ID3 together with the code of a starting character STX, etc. The code ID1 shows that the last transaction data need be updated reversely and when ID1=1, an indication for restoring a file 32 to a state before the transaction is sent to the center 30 because the transaction is incomplete owing to a fault of the terminal equipment 10 after the file 32 of the center 30 is updated as a result of the transaction. An ID2 shows whether a fault occurs when the last transaction is completed, and the telegraphic message TEXT2 contains various data on the transacted amount of money, etc., during the 1st transaction. |
