The EngineeringValue Variables are used to expose key results of an analyser and the associated values that qualified it. This type helps the Client quickly identify important values. For example, the concentration of a given chemical and the associated confidence factors like the F-Ratio from the PLS model. EngineeringValueType is formally defined in Table 84
Table 84 – EngineeringValueType Definition
Subtype of the DataItemType defined in [OPC 10000-8]
The Value Attribute of the EngineeringValue is the main value, for example, the concentration. Its HasComponent elements are there to qualify or describe this value. For example the associated confidence factors like F-Ratio from the PLS model.