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Supported Quality Values

The following table provides a list of the quality values in Historian and the corresponding ones in the OPC Classic HDA server.


Proficy Historian Quality	OPC Classic HDA Quality	Description
ihOPCGood	OPC_ QUALITY_ GOOD	Indicates that there is no need for inspection. This quality is returned for the tags that have all the values archived properly.
ihOPCBad	OPC_ QUALITY_ BAD	Indicates a need for attention. This quality is returned for the tags that had problems during the collection.
ihOPCUncertain	OPC_ QUALITY_ UNCERTAIN	Indicates a need for inspection. This quality is returned when the data collection time is low and when there is no specific quality value.
ihOPCNA	OPC_ QUALITY_ BAD	Indicates a need for attention.