| 摘要 |
The communications element (2.1-2.4) includes a first digital data input (SPIIN) for receiving digital control data from a separate control unit (3) or a communications element connected directly in series, and a first digital data output (SPIOUT1) for a chain-like forwarding of digital control data received over the first data input to a directly coupled communications element or to the control unit. A second digital data output (SPIOUT2) is provided for forwarding the digital control data received at the first data input to an indirectly coupled communications element. A second digital data input may be provided for receiving digital control data from the control unit or a communications element connected indirectly in series. The digital outputs may be switchable to an active or inactive condition.
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