Specifies a node by an identifier. 更多...
import 语句: | import QtOpcUa. |
Since: | QtOpcUa 5.12 |
import QtOpcUa 5.13 as QtOpcUa QtOpcUa.NodeId { identifier: "s=Example.Node" ns: "Example Namespace" }
标识符 : string |
Identifer of the node. The identifier has to be given in one of the followig types.
类型 | 范例 |
---|---|
Numeric |
i=23
|
字符串 |
s=MyStringIdentifier
|
GUID |
g=08081e75-8e5e-319b-954f-f3a7613dc29b
|
Opaque (base64) |
b=UXQgZnR3IQ==
|
It is possible but not recommended to include the namespace index
ns=X;s=...
. In this case the given namespace index is internally stripped off the identifier and set to the namespace property.
ns : string |
Namespace of the node identifier. The identifier can be the index as a number or the name as string. A string which can be converted to an integer is considered a namespace index.
Emitted when the underlying node has changed. This happens when the namespace or identifier has changed.
注意:
相应处理程序是
onNodeChanged
.