NodeId QML Type

Specifies a node by an identifier. 更多...

导入语句：	import QtOpcUa
Since:	QtOpcUa 5.12

所有成员列表，包括继承成员

特性

identifier : string
ns : string

信号

nodeChanged ()

详细描述

import QtOpcUa 5.13 as QtOpcUa
QtOpcUa.NodeId {
    identifier: "s=Example.Node"
    ns: "Example Namespace"
}

特性文档编制

identifier : 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.

信号文档编制

nodeChanged ()

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 .