AttributeOperand QML Type▲
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Import Statement: import QtOpcUa
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Since: QtOpcUa 5.13
Detailed Description▲
The AttributeOperand is defined in OPC-UA part 4, 7.4.4.4. It has the same purpose as SimpleAttributeOperand but has more configurable options.
Property Documentation▲
alias : string▲
Alias name for the operand. This allows using this instance as operand for other operations in the filter.
browsePath : list<OpcUaNodeId>▲
Browse path to the node holding the attribute.
Sélectionnez
import QtOpcUa as QtOpcUa
QtOpcUa.AttributeOperand {
...
browsePath: [
QtOpcUa.NodeId {
identifier: "Message"
ns: "http://opcfoundation.org/UA/"
}
...
]
}indexRange : string▲
Index range string used to identify a single value or subset of the attribute's value.
Sélectionnez
import QtOpcUa as QtOpcUa
QtOpcUa.AttributeOperand {
...
indexRange: "0:2"
}nodeAttribute : Constants.NodeAttribute▲
Attribute of the node browsePath is pointing to. The default value is Constants.NodeAttribute.Value.
Sélectionnez
import QtOpcUa as QtOpcUa
QtOpcUa.AttributeOperand {
...
nodeAttribute: QtOpcUa.Constants.NodeAttribute.Value
}typeId : string▲
Node id of the type definition node. The operand will be of the type or one of its subtypes.
Sélectionnez
import QtOpcUa as QtOpcUa
QtOpcUa.AttributeOperand {
...
typeId: "ns=0;i=2041"
}