QOpcUaReadItem#

This class stores the options for a read operation. More…

Synopsis#

Functions#

def __ne__ (rhs)
def attribute ()
def indexRange ()
def nodeId ()
def setAttribute (attribute)
def setIndexRange (indexRange)
def setNodeId (nodeId)

Detailed Description#

A read operation on an OPC UA server returns the entire value or a certain index range of the value of an attribute of a node on the server. This class contains the necessary information for the backend to make a read request to the server.

One or multiple objects of this class make up the request of a readNodeAttributes() operation.

See also

readNodeAttributes() QOpcUaReadResult

class PySide6.QtOpcUa.QOpcUaReadItem#

PySide6.QtOpcUa.QOpcUaReadItem(other)

PySide6.QtOpcUa.QOpcUaReadItem(nodeId[, attr=QOpcUa.NodeAttribute.Value[, indexRange=””]])

Parameters

nodeId – str
indexRange – str
other – PySide6.QtOpcUa.QOpcUaReadItem
attr – NodeAttribute

Constructs a read item from other.

Constructs a read item for the index range indexRange of the attribute attr of node nodeId.

PySide6.QtOpcUa.QOpcUaReadItem.attribute()#

Return type: NodeAttribute

Returns the node attribute id.

See also

setAttribute()

PySide6.QtOpcUa.QOpcUaReadItem.indexRange()#

Return type: str

Returns the index range.

See also

setIndexRange()

PySide6.QtOpcUa.QOpcUaReadItem.nodeId()#

Return type: str

Returns the node id.

See also

setNodeId()

PySide6.QtOpcUa.QOpcUaReadItem.__ne__(rhs)#

Parameters: rhs – PySide6.QtOpcUa.QOpcUaReadItem
Return type: bool

Returns true if lhs is not equal to rhs; otherwise returns false.

Two read items are considered not equal if their nodeId, attribute or indexRange are not equal.

PySide6.QtOpcUa.QOpcUaReadItem.setAttribute(attribute)#

Parameters: attribute – NodeAttribute

Sets the node attribute id to attribute.

See also

attribute()

PySide6.QtOpcUa.QOpcUaReadItem.setIndexRange(indexRange)#

Parameters: indexRange – str

Sets the index range to indexRange.

See also

indexRange()

PySide6.QtOpcUa.QOpcUaReadItem.setNodeId(nodeId)#

Parameters: nodeId – str

Sets the node id to nodeId.

See also

nodeId()