| 摘要 |
<p>The device has electrical lines (9, 10), which form a feeder conductor and a return conductor, respectively, and switching units (4, 5) e.g. relays, arranged in a control device (1). The unit (4) is connected with the one-way conductor and the unit (5) is connected with the reverse conductor. The units are switched from one another independent of a micro controller (6). Two other switching units e.g. optocouplers (7, 8), are switched by electrical current in an electrical circuit, where switching conditions of the units are conveyed to the microcontroller in a control device (2). An independent claim is also included for a method for secure data transmission between two control devices.</p> |
