| 摘要 |
PURPOSE:To attain a signal input/output control according to the signal contents by stopping a timer when a response signal is received in a prescribed time indicated with a recycle timer value, and resending the signal by chancing a time-out when a response is not returned. CONSTITUTION:A signal input/output device 2 retrieves an input/output device control table 4i, and retrieves the memory area of a signal identification number 4a to be outputted by the signal input/output device 2. That the lock bit 4b in the memory area can be retrieved is confirmed, signal contents 4c are read, the signal conforming to a regulated mode is generated by a signal forming circuit 2a, and the signal is outputted. At such a time, a timer 5 is activated, and when the response is returned in the prescribed time indicated by a recycle timer value 4f from the other control signal, the timer 5 is stopped. When the response is not returned, the signal input/output device retrieves a memory 4 by chancing the timer time-out conforming to the output conditions, and the signal contents 4c are outputted. Thus the signal input/output control according to the signal contents is attained at every signal. |
