| 摘要 |
An electronic component pick and place machine has a series of key readers adjacent its component holder receptacles. The component holders (e.g., feeders) each have a machine-readable holder identification key attached on a flexible cable. When the holders are installed, their keys are inserted into the appropriate readers to be read by a controller to identify and locate the component holders. The controller initiates a holder placement verification check each time a new circuit board enters the machine to be populated, and updates a system component inventory database after each board build. The system database tracks the number and part number of the components loaded on each holder, as well as holder maintenance data.
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