| 摘要 |
<p>PURPOSE:To detect an error of the reference time of a time server and to adopt the correct time in a decentralized processing network. CONSTITUTION:A client node gives a request to a time server to transmit the reference time in a power supply application state and then stores the received time in a network time register 9. Besides, the time of a clock circuit 15 at this time is stored in a time register 10. Then the absolute value of the difference of time between both registers 9 and 10 is stored in a difference detecting register 12 and then compared with the value of an allowable value setting part 13 by a difference comparator 14. If the difference absolute value is smaller than the allowable value, the time of the register 9 is loaded in the circuit 15. Meanwhile the present time of the circuit 15 and the time of the register 9 are shown on a display 7 when the difference absolute value is larger than the allowable value. So that an operator chooses that he adapts whether either one of the time of the register 9 or 10, or another corrected time.</p> |
