| 摘要 |
Operation of movable members such as wing or sash parts of openable windows or facade sections forming part of a natural ventilation system is controlled by communication of operating commands from centralized and/or distributed control means to operator units for movement of said movable members. Concurrent operation of operator units of a sub-group ( 1, 2, 8-11 ) of operator units ( 3 ) associated with a single movable member is coordinated by interface means ( 6, 7 ) interconnected between the sub-group and the centralized and/or distributed control means ( 4, 16 ). The interface unit ( 6, 7 ) communicates an operating command from said central and/or distributed control means ( 4, 16 ) to the operator units ( 3 ), receives actual position and/or status information from each operator unit ( 3 ) of the sub-group and uses this information for communication of coordinated individual control commands to the operator units ( 3 ). Communication between all operator units of the sub-group and the interface means is effected on a single communication line.
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