| 摘要 |
<p>PURPOSE:To make it possible to reduce the number of discrimination circuits for discriminating a presence of a malfunction by inputting a signal indicating a condition of an output route to each of actuators into an input port in a manner than enables identifying each output route. CONSTITUTION:A control means B receives signals from a group of various sensors A and outputs control signals from each output port via a drive means D to each of multiple actuators C. While a check signal output means E outputs check signals using the output port of each control signal commonly, the check signals are outputted to respective output routes leading from a control means B to the respective actuators C with the output levels being reversed in succession. And a malfunction discriminating means G detects a change in an OR signal from an OR circuit F due to the reversal of the check signal output level, discriminates a presence of a malfunction of the output route in question, and displays the result on a display means H. Thus, number of the malfunction discriminating circuits can be reduced, making it possible to simplify a constitution of a hardware.</p> |
