| 摘要 |
PURPOSE:To enable process interruption simply by successively storing the states of signals constituting events at the change of each signal state, and at the input of leading interruption and final interruption, collecting the compared result whether the input is normal sequence or not. CONSTITUTION:At the generation of interruption, a computer determines corresponding constituted element signal No., interruption No, and event No. from a signal-unit control table. The computer stores the state of the inputted constitutional element signal, and after updatating the number of stored signal states by ''+1'', decides the interruption No. In cace of the leading interruption, the computer stores the input of the leading interruption to end the processing. When the leading interruption has been already inputted at the time of final interruption, the stored signal state is compared with the sequence pattern of an even-unit control table. When the compared result is the same, the formation of the event is confirmed and a program is started to execute prescribed processing. |
