| 摘要 |
The keys which are used to activate the machine functions are embodied as keys (T 1 Tn) which are directly connected to one of the SPS inputs ( 9 ). One of the several key planes can be selected by the user interface ( 13 ) of the PC coupled to the SPS. A control unit ( 4 ), which is connected to the SPS inputs ( 9 ) and which processes data in the SPS, is provided. Said control unit contains information about the keyboard layout of the keys (T 1 Tn) on the respectively selected key plane by the PC by means of the data interface ( 8 ) and comprises a key signal which is arranged on the SPS entry ( 9 ).
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