It is to describe the trace samples for a given program step. It is used in StepTraceDataType. The structure is defined in Table 224.
Table 224 – TraceContentDataType Structure
Name
Type
Description
Optional
TraceContentDataType
structure
Subtype of the 0:Structure defined in OPC 10000-5.
Values
0:Double[]
Itis an array of trace samples. The values correspond to the PhysicalQuantity attribute.
False
SensorId
0:TrimmedString
Itis 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.
True
Name
0:String
Itis the user-friendly name for the given trace.
True
Description
0:String
Itis an additional text to describe the trace samples.
True
PhysicalQuantity
0:Byte
It is to determine the type of the physical quantity associated to a given value(s). Refer section 9.1 for the pre-defined values.
True
EngineeringUnits
0:EUInformation
It is the engineering unit of the values.
True
Its representation in the AddressSpace is defined in Table 225.
Table 225 – TraceContentDataType Definition
Attribute
Value
BrowseName
TraceContentDataType
IsAbstract
False
References
Node Class
BrowseName
DataType
TypeDefinition
Other
Subtype of the 0:Structure defined in OPC 10000-5.
