| 摘要 |
A supervisory control device is configured such that when a function is added to a device to be subjected to supervisory control, an attribute usage flag that indicates whether the supervisory control device supports any changes, and an attribute effectiveness flag that indicates whether the supervisory control target device supports the changes are added, as the information relating to the attributes that undergo the changes due to the addition of the function, to a definition of an instance which the supervisory control device retains; the supervisory control device also including a control unit which, on the basis of data of the added attribute usage flag and attribute effectiveness flag, determines at least one of whether the supervisory control target device supports the new function and whether the supervisory control based upon the new function is effective for the attributes undergoing the changes due to the addition of the function.
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