| 摘要 |
<p>This invention relates to a self-diagnosing proximity switch. This switch comprising two sets of circuits (L1, 1, 6, 3; L2, 2, 7, 4) outputs a fault detection signal in the event of disagreement of outputs from the respective sets of circuits (L1, 1, 6, 3; L2, 2, 7, 4) and even in the event of such a fault, can continue to output a normal object detection signal.</p> |
