| 摘要 |
PURPOSE:To facilitate operating a multiple controller system, by allowing only a system controller, which is connected to a common bus by which plural direct digital control systems are connected in parallel through memories, to operate and control memories. CONSTITUTION:Single or multiple direct digital control systems DCS and DCM are connected in parallel to a common bus MB through memories ME. A system controller SC is connected to the common bus. In systems DCS and DCM, analog signals of oscillators OS are subjected to A/D conversion in input parts PI and are stored in shared memories ME. Controllers CO perform the operation processing of data in memories and subject them to D/A conversion in process output parts PO, and they are operated in parts OP. Only the controller SC reads out and writes data from and into memories ME of systems DCS and DCM and transfers data between memories ME. Thus, systems DCS and DCM control all functions independently of each other, and systems are operated efficiently. |
