| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically adjust respective clocks of POS system to the center clock while a daily job is executed by installing the time of the center in the data layout of a transmission/reception telegram and automatically rewriting the POS clock when time data is received on a POS side. SOLUTION: A center side dials a POS side on the store of A for starting store concentration, for example. The POS side makes a response to an incoming call and the center side and the POS side are connected by a line. The center side reads the time of center PC, sets time data which is read on a prepared start telegram and transmits the start telegram to the POS side. The POS side in the store of A receives the telegram, takes out time which is set from it and resets the clock of POS at time which is taken out. Namely, the clock of the POS side is adjusted to the clock of the center side and the response is returned. Then, regular data transfer is executed from then.</p> |
