StepTraceType 
It is to describe of the trace for a given program step.
The representation of the StepTraceType VariableType in the address space is shown in the following table:
| Name | Attribute |
|---|---|
| NodeId | ns=1;i=2005 |
| NamespaceUri | http://opcfoundation.org/UA/IJT/ |
| BrowseName | StepTraceType |
| NodeClass | VariableType |
| DataType | StepTraceDataType |
| ValueRank | -2 |
| IsAbstract | False |
| SubtypeOf | BaseDataVariableType |
The references from the StepTraceType VariableType Node are shown in the following table:
| Reference | NodeClass | BrowseName | DataType | TypeDefinition | ModellingRule |
|---|---|---|---|---|---|
| HasComponent | Variable | NumberOfTracePoints | UInt32 | BaseDataVariableType | Mandatory |
| HasComponent | Variable | SamplingInterval | Double | BaseDataVariableType | Optional |
| HasComponent | Variable | StartTimeOffset | Double | BaseDataVariableType | Optional |
| HasComponent | Variable | StepResultId | Guid | BaseDataVariableType | Mandatory |
| HasComponent | Variable | StepTraceContent | TraceContentDataType[] | BaseDataVariableType | Mandatory |
| HasComponent | Variable | StepTraceId | Guid | BaseDataVariableType | Mandatory |