| 摘要 |
A fail-safe system to connect a mobile input unit with a machine control unit, implementing a redundant preprocessing of the user inputs in the mobile input unit. The signals from the input means are routed to two processors of the input unit, and both processors encode the user inputs before transmitting the signals to the control unit. In the control unit, the received and encoded user inputs are decoded by two processors and subsequently compared to one another for concordance. When concordance is given, the received data is further processed in the control. If there is no concordance, an error routine is executed, shutting down the machine tool.
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