| 摘要 |
To key an identification code of a controlling member to a code reader of a function controller for controlling a function, each controlling member is fitted with a card reader and is configured to adopt the code on the card as the identification code to be attached as the identification portion of any message imparted into a signal line. In similar fashion, each of the function controllers includes a card reader for reading a card bearing a code and the function controller is configured to adopt the code read from the card as being the identification code sought by the function controller as identifying a message as originating from its associated controlling member.
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