| 摘要 |
<p>PURPOSE:To adjust the time of each control means within the allowable range by broadcasting time information outputted from a master clock means to the other controller through a communication bus for each constant time. CONSTITUTION:A master clock means 13 in an operating station OP is ticking accurately. A time synchronization means 14 is actuated for each constant time to send the time information of the master clock means 13 through a bus BS to control means FC1 and FC2. When receiving the time information through the communication BUS in the controllers FC1 and FC2, a clock correction means 22 corrects the time of a clock means 21. Thus, the time of each controller is synchronized to execute various controls synchronously.</p> |
