Thank you very much for your quick response.

I have tried to understand how to use AnalogItemType variable using OPC UA Specificiation and also tried google to get more details

Unfortunately I didn’t enough information which help me to set EngUnit.

Could you please share any examples or link where Engineering Unit is set for UaNode?

Thanks in advance

Thanks, Markus for share an Example of AnalogItemType.

I am able to create AnalogItemType with below method
private AnalogItemType createAnalogItem() throws StatusException, NodeBuilderException {
try {
NodeBuilderConfiguration conf = new NodeBuilderConfiguration();
conf.addOptional(Identifiers.AnalogItemType_EngineeringUnits);
AnalogItemType analogItem = createNodeBuilder(AnalogItemType.class, conf).setName(“AnalogItem”).build();
String namespaceUri = “http:// http://www.opcfoundation.org/U…../un/cefact“;
int unitId = -1;
LocalizedText displayName = new LocalizedText(“A”, Locale.ENGLISH);
LocalizedText description = new LocalizedText(“Current”, Locale.ENGLISH);
analogItem.setEngineeringUnits(new EUInformation(namespaceUri, unitId, displayName, description));
return analogItem;
} catch (Exception e) {
logger.error(” AnalogItemType contains an exception..” + e.toString());
return null;
}
}
Question: I create UaNode with following code:
PlainVariable tagVariable = new PlainVariable(this, nodeId, nameOnLevel, LocalizedText.NO_LOCALE);
tagVariable.setDataTypeId(Identifiers.Float);
try {
tagVariable.setValue(0);
} catch (StatusException statusException) {
logger.error(“can not set default value for > ” + nodeId.toString() + ” > ” + dataType,
statusException);
}
How can i set Engeeniring Unit for tagVariable?
could you please share Examples, If you have.

Hi Bjarne,

I have understood that instead of using PlainVariable , I should use AnalogItemType or I should Create PlainProperty and add it to PlainVariable object.

I have tried following :

PlainVariable tagVariable = new PlainVariable(this, nodeId, “Name Of Node”, LocalizedText.NO_LOCALE);
tagVariable.setDataTypeId(Identifiers.Float);
tagVariable.setValue(0);
tagVariable.setTypeDefinitionId(Identifiers.BaseDataVariableType);

PlainProperty enumStringsProperty = new PlainProperty(this, nodeId,
new QualifiedName(“Name of Node”), new LocalizedText(“Name Of Node”, LocalizedText.NO_LOCALE));
enumStringsProperty.setBrowseName(new QualifiedName(“MVAR”));
enumStringsProperty.addReference(Identifiers.HasProperty, Identifiers.HasProperty, false);
tagVariable.addProperty(enumStringsProperty);

With this changes I am getting runtime an error as ” java.lang.IllegalArgumentException: Cannot add property nodes to a Property node(BrowseName=MVAR NodeId=ns=2;s=STATISTICS_Processor1″

I am not sure what I am missing there.

I have a simple requirement that I would like to create a Node with Datatype, Initial Value, Name and Engineering Unit.
I have a json file with this information to create nodes.

I am able to achieve this with PlainVariable except for Engineering Unit.

Could you please let me know best approach to do this?

Do you have any sample example to create node with above requirements.

Thanks in advance

Thanks Bjarne for your detailed reply.

I have delete below line:
enumStringsProperty.addReference(Identifiers.HasProperty, Identifiers.HasProperty, false);

Now I am getting the below error

Data type not found : SCC1_STATISTICS_late_messages_per_second, java.lang.IllegalArgumentException: Cannot add property nodes to a Property node(BrowseName=MVAR NodeId=ns=2;s=SCC1_STATISTICS_late_messages_per_second

Could you please point me on how to create AnalogItemType to set Datatype, name and Engineering Unit as annther option to do this