| 摘要 |
<p>PURPOSE:To improve time adjustment accuracy by providing a master station having a means which inputs and sends time synchronizing data to a slave station and the slave station having a means which processes data from the master station and sends an interruption signal out at every constant period, etc. CONSTITUTION:The master station A decides whether or not it is before time casting for predetermined time adjustment and automatic or manual time setting operation is performed from external equipment 14. The data set by the equipment 14 is sent to the slave station C through a transmission part 12. The slave station C when receiving time synchronizing data from the master station A by a transmission part 16 adjust the time of the internal timer 18 in a main microprocessor 15. When it is decided that a constant-period interruption signal is inputted from a time-casting reception part 17, the time-adjusted timer 18 is corrected and the time of the slave station C is adjusted. Thus, the time synchronizing data to the slave station C which is inputted from the equipment 14 through the master station A can be sent without using any special using method for a HOLD command, etc.</p> |
