| 摘要 |
PROBLEM TO BE SOLVED: To obtain tolerance with respect to faults, such as breaking of line and disconnection of connector, and to eliminates the need for operations for setting the addresses of respective terminal control parts. SOLUTION: A main control part 1, while communicating with the terminal control parts controlling respective parts of vending machine, controls them overall. The terminal control parts are divided into arrays of the terminal control parts 2-1 to 2-3, 3-1 to 3-3, 4-1 to 4-3, etc., and have address-setting means, indicating their positions in the respective arrays. Furthermore, a communication line 11, connecting the respective arrays is equipped with gate circuits 7-1 to 7-3 and is enabled to give array addresses in the order starting from the terminal control part closest to the main control part, by turning on and off signal transmission to following terminal control part arrays.
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