Returns a Tag attribute, which can be:

•FieldDescription: Tag's meaning or description

•FieldSource: Path of the Tag being stored

•FieldType: Data type (Double, Bit, String, or Integer)

•FieldEU: Engineering unit

•FieldLowEng: Lower limit

•FieldHighEng: Higher limit

•FieldDeadBand: Dead band for storage

•FieldDeadBandUnit: Dead band unit, whether in absolute values or a percentage

•FieldMinRecTime: Minimum time for storage

•FieldMaxRecTime: Maximum time for storage

•FieldSize: Field's size

•FieldVARTYPE: Field's native data type

•FieldScanTimeMs: Scan time used to rebuild a Tag's chart