| 摘要 |
<p>Disclosed is a safety system (10) for an elevator structure, comprising a control unit (11), a bus node (13), a safety element (16), and a bus (12) for enabling communication between the control unit (11) and the bus node (13). The bus node (13) is provided with first circuitry means (14) which impinge the safety element (16) with a first analog signal upon a digital input by the control unit (11). The bus node (13) is also provided with second circuitry means (15) which pick up an analog signal on the safety element (16) and supply digital feedback data to the control unit (11) via the bus (12).</p> |
