| 摘要 |
PURPOSE:To allow a central management means to surely collect information of a routine call time by comparing a backed-up current time with the routine call time at reapplication of power after interruption of power, reading the information to be called from a storage means when the current time is exceeded and sending the information to the central management means. CONSTITUTION:Even when power of a data terminal unit 2 is interrupted at a routine call time, since an SRAM 24 and a clock IC 25 are active by a backup power supply 27, as soon as the power of the data terminal unit 2 is applied, a routine call time flag is set to '1', and the data at the routine call time is sent to the center equipment 3. Moreover, when the power of the data terminal unit 2 is interrupted, since the copying operation of a copying machine 1 is not allowed, the count of various counters is not revised. |
