10 OPC UA DataTypes

10.12 TraceContentDataType

It is to describe of the trace samples for a given program step. It is used in StepTraceDataType and is represented as TraceContentType variable. The structure is defined in Table 90.

Table 90 - TraceContentDataType Structure

Name	Type	Description
TraceContentDataType	structure	Subtype of the 0:Structure defined in OPC 10000-5.
Values	0:Double[]	The mandatory Values is an array of trace samples. The values correspond to the PhysicalQuantity attribute.
SensorId	0:Guid	The optional SensorId is the system-wide unique identifier of the sensor which has reported the values. This will be useful for identifying the sensor when the same set of samples are reported by multiple sensors.
Name	0:String	The optional Name is the user readable name for the given trace.
Description	0:String	The optional Description is an additional text to describe the trace samples.
PhysicalQuantity	0:Byte	The optional PhysicalQuantity is to determine the type of the physical quantity associated to a given value(s). Refer section 9.10 for the pre-defined values.
EngineeringUnits	0:EUInformation	The optional 0:EngineeringUnits defines the engineering unit of the values.

Its representation in the AddressSpace is defined in Table 91.

Table 91 - TraceContentDataType Definiton

Attribute	Value
BrowseName	TraceContentDataType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the 0:Structure defined in OPC 10000-5.