| 摘要 |
PURPOSE:To simplify a control processing by setting plural self addresses in accordance with control equipment and providing a multiple address judging means which outputs a control signal in accordance with the control command bit of received data when the self address has been judged from the received data. CONSTITUTION:A central unit is receiving plural control signals from external control device and the signal from a light receiving circuit 19 is output into a control circuit 21. When normal data receiving is confirmed by parity check, an operation signal 24 is output to a multiple address judging circuit 22. Then self addresses are compared, and control signal in accordance with the control command bit of received data is output. In this way the control processing of transmission and reception in the central unit can be simplified.
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