ISA-95 Common Object Model

6.3.1 General

All data types defined as CDT are mapped to CDT DataTypes or CC DataTypes. Table 20 defines mapping of data types between CCTS and OPC UA.

Table 20 – CDT Data types

CDT	OPC UA	Description	Category	Definition
Amount	CDTAmount		CDT	Clause 6.3.2
Binary Object	CDTBinaryObject		CDT	Clause 6.3.3
Code	CDTCode		CDT	Clause 6.3.4
Date	DateString		CC	Clause 6.2.2
Date Time	CDTDateTime		CDT	OPC 10000-3
Duration	DurationString		CC	Clause 6.2.6
Graphic	CDTGraphic		CDT	Clause 6.3.6
Identifier	CDTIdentifier		CDT	Clause 6.3.7
Indicator	Boolean		CC	OPC 10000-3
Measure	CDTMeasure		CDT	Clause 6.3.7
Name	LocaizedText	Language supplemental is mapped to a “locale” element.	CC	OPC 10000-3
Number	Number	Decimal, Double, Float, Int16, Int32, and Int64 are allowed.	CC	OPC 10000-3
Ordinal	CDTOrdinal		CDT	Clause 6.3.9
Percent	CDTMeasure	Codes according to only percent shall be used. (e.g. “P1”)	CDT	Clause 6.3.7
Picture	CDTPicture		CDT	Clause 6.3.10
Quantity	Number	Decimal, Double, Float, Int16, Int32, and Int64 are allowed.	CC	OPC 10000-3
Rate	CDTRate		CDT	Clause 6.3.11
Ratio	Number	Decimal, Double, Float, Int16, Int32, and Int64 are allowed.	CC	OPC 10000-3
Sound	CDTSound		CDT	Clause 6.3.12
Text	LocalizedText	Language supplemental is mapped to a “locale” element.	CC	OPC 10000-3
Time	TimeString		CC	Clause 6.2.8
Value	BaseDataType	Decimal, Double, Float, Int16, Int32, Int64 or String is allowed. (other Variant types may also be supported)	CC	OPC 10000-3
Video	CDTVideo		CDT	Clause 6.3.13