| 摘要 |
PURPOSE:To guarantee the device from runaway, by inputting an output signal to a microprocessor again, collating the signal with an input signal to be a cause of the generation of an output signal, permitting the output again when the result is correct, and stopping the re-output when failed. CONSTITUTION:An output 108 from the microprocessor 101 is inputted as a signal 107 to the processor 101 in a loop circuit 110 with a pulse outputted from a loop signal line 109 in terms of the software just before the output. The signal looped in the circuit 110 is collated with an input signal, and when this signal is correct, an output 106 is obtained via the circuit 110 from the output 108. In this case, a pulse is outputted from a normal pulse line 102. If no pulse is outputted to the line 102, no signal 108 is outputted from the device 101. When the signal 108 is not correct in this way, no pulse is outputted to the line 102 and the device 101 is reset. |
