| 摘要 |
<p>PURPOSE:To secure the synchronization among plural computers in a fixed cycle even though a synchronizing signal generating device has a trouble at its single side by preparing tow synchronizing computers and securing the synchronization among plural computers based on the synchronizing signal of the main one of both synchronizing computers. CONSTITUTION:When the initializing processes are through with the synchronizing signal generating devices 1 and 2, both devices 1 and 2 reset a timer 6 to decide the executing cycle of a single circulation program so that a main system works in a fixed cycle. The devices 1 and 2 are duplicated and the main one of both devices 1 and 2 is controlled by a transmission line 7 connecting both devices 1 and 2. Then the main device 1 or 2 transmits the synchronizing signals to microcomputers 31 - 34. Thus the synchronization is surely and accurately secured among plural computers.</p> |
