| 摘要 |
PURPOSE:To attain free of increase/decrease and replacement in number of control blocks and blocks to be controlled by adopting the constitution that plural control blocks and plural controlled blocks are connected by a supervisory control bus. CONSTITUTION:The control blocks 11,12 and the controlled blocks 21',22'-2n' are connected by the supervisory bus 3. The blocks 11, 12 monitor the state signal from the controlled blocks 21',-2n' and when the blocks 21'-2n' have an interface matching with the bus 3, the extension of the controlled blocks is recognized. Further, the replacement of the installing position of the blocks 11,12 and the blocks 21'-2n' is executed easily. Further, the bus 3 is provided with a control inhibition line and when a control block outputs a control signal, after it is confirmed that the control inhibition line is not in the inhibiting state, an inhibition signal is outputted to a control inhibition line and the control signal is outputted at the same time to connect plural control blocks to the supervisory control bus.
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