| 摘要 |
<p>The unit has bus-system for transmitting instructions of control elements (27-32) to actuators. The bus system has a wireless transmission system e.g. line system (41) for transmitting signals as commands, and transmitters (25, 26) transmits the commands. Receivers (14, 15) are provided with outputs (45, 46), receive the commands of the transmitter and convert the commands in to control commands. The transmitter comprises an analog switch that connects the transmitter with the transmission system so that the commands are sent to the transmission system only with closed analog switch.</p> |
