| 摘要 |
PROBLEM TO BE SOLVED: To dissolve the complication of a signal line system and to simplify electric constitution by improving the transmission system of signals between a main control part and a peripheral control part, especially from the main control part to the peripheral control part. SOLUTION: Command signals are transmitted from the main control part 140 to the peripheral control parts 150, 160, 170 and 180 in a state capable of specifying the peripheral control part to be an operation command object. Thus, a signal transmission route 500 to the plural peripheral control parts 150, 160, 170 and 180 is made common. As a result, the number of signal lines is substantially reduced compared to the form of forming the transmission route of the command signals for each individual peripheral control part. Also, the output port of the command signals on the side of the main control part 140 is integrated. Thus, the complication of the signal line system is dissolved and the electric constitution is simplified.
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