Hello,
this mailing list is for topics around the development of Qt itself, https://lists.qt-project.org/listinfo/interest is the list for questions regarding the usage of Qt. According to Part 4, 5.10.4.2 of the OPC UA specification, the status code returned by the write operation is used if the server does not support writing the index range for the node. Are there already values on the server for the range you are trying to write? Usually, servers fail to update a range if there is no previous value for one or more elements. If you were just trying to write the entire array, use writeAttribute() with a QVariantList. Best regards Jannis From: "AGAYEV, LEVON" <[email protected]> To: <[email protected]> Sent: 28.07.2020 16:41 Subject: [Development] Writing to upc ua server with QOpcUaNode::writeAttributeRange Hello, I apologise for my bad english in advance.. After searching for a while and not finding any solution i have to bother you here. I am trying to read and write to an array of doubles in my opcua server. Reading works good but I have troubles with the use of QOpcUaNode::writeAttributeRange methode. this is what i try QList<QVariant> myList; for(int i=0;i<10;i++){ myList.append(static_cast<double>(i)); } // QVariant myList("0,1,2,3,4,5,6,7,8,9"); m_listNode->writeAttributeRange(QOpcUa::NodeAttribute::Value, myList, "0:9", QOpcUa::Types::Double); In my slot connected to QOpcUaNode::attributeWritten signal i get this status "BadWriteNotSupported" Can someone please tell me what could cause this issue ? I use Qt 5.15 and mingw81_64 on windows10 my server is an opcua server embedded in Beckhoffs Twincat 3 running on the same pc Thank you very much in advance Best regards Levon _______________________________________________ Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
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