About User Defined Attributes

User Defined Attributes (UDA) can be imported and exported.

User Defined Attributes can be activated under General, in the STEP Exchange section of the Preferences.

Check recommended practices, licensing and application protocol requirements in Requirements.

At Import and Export

Select the User Defined Attributes check box to process

  • User parameters defined at the PartBody level (i.e. associated to the solid it contains).
  • User parameters defined at the surface feature level, contour feature level and point feature level.
  • User parameters defined at the geometrical set level.
    Notes:
    • Select both the Geometrical Sets and User Defined Attributes check boxes to process parameters applied to geometrical sets (shape_aspect).
    • Applicative Geometric Sets are not supported.
  • User parameters defined within a Parameter Set at the root of the 3DShape of the 3DPart. They are taken into account as STEP User Defined Attributes at Part level.

For each User Defined Attribute, STEP preserves:

  • The name
  • The value (the formula is lost)
  • The type of the parameter (string, integer, real, boolean)
  • The measure (when managed by STEP)
  • The unit (when managed by STEP)
  • The association to a product or to a geometrical entity.

Note: AP242 XML files do not support UDA attached to a product, but they support UDA attached to a geometrical entity.

In this release, the mapping of all 3DEXPERIENCE measures with units is not supported. Only the following are:

Real NUMERIC_MEASURE (AP214) or REAL_REPRESENTATION_ITEM (AP203 ed2/AP242 ed1)
Integer COUNT_MEASURE (AP214) or INTEGER_REPRESENTATION_ITEM (AP203 ed2/AP242 ed1)
String DESCRIPTIVE_REPRESENTATION_ITEM
Boolean String having value TRUE or FALSE and an additional meta-attribute specifying that the string UDA is a Boolean (AP214) or BOOLEAN_REPRESENTATION_ITEM (AP203 ed2/AP242 ed1)
Length MEASURE_REPRESENTATION_ITEM with name LENGTH_MEASURE
Area MEASURE_REPRESENTATION_ITEM with name AREA_MEASURE
Volume MEASURE_REPRESENTATION_ITEM with name VOLUME_MEASURE
Mass

MEASURE_REPRESENTATION_ITEM with name MASS_MEASURE (AP203 ed2/AP242 ed1)
Density MEASURE_REPRESENTATION_ITEM with name POSITIVE_RATIO_MEASURE (AP203 ed2/AP242 ed1)
Surfacic mass MEASURE_REPRESENTATION_ITEM with name POSITIVE_RATIO_MEASURE (AP203 ed2/AP242 ed1)
Time MEASURE_REPRESENTATION_ITEM with name TIME_MEASURE (AP203 ed2/AP242 ed1)
Angle MEASURE_REPRESENTATION_ITEM with name PLANE_ANGLE_MEASURE (AP203 ed2/AP242 ed1)
Energy MEASURE_REPRESENTATION_ITEM with name ENERGY_MEASURE (AP203 ed2/AP242 ed1)
Force MEASURE_REPRESENTATION_ITEM with name FORCE_MEASURE (AP203 ed2/AP242 ed1)
Pressure MEASURE_REPRESENTATION_ITEM with name PRESSURE_MEASURE (AP203 ed2/AP242 ed1)
Temperature MEASURE_REPRESENTATION_ITEM with name THERMODYNAMIC_TEMPERATURE_MEASURE (AP203 ed2/AP242 ed1)
Power MEASURE_REPRESENTATION_ITEM with name POWER_MEASURE (AP203 ed2/AP242 ed1)
Voltage MEASURE_REPRESENTATION_ITEM with name ELECTRIC_POTENTIAL_MEASURE (AP203 ed2/AP242 ed1)
Electric resistance MEASURE_REPRESENTATION_ITEM with name RESISTANCE_MEASURE (AP203 ed2/AP242 ed1)
Electric intensity MEASURE_REPRESENTATION_ITEM with name ELECTRIC_CURRENT_MEASURE (AP203 ed2/AP242 ed1)
Luminous intensity MEASURE_REPRESENTATION_ITEM with name LUMINOUS_INTENSITY_MEASURE (AP203 ed2/AP242 ed1)
Magnetic flux density MEASURE_REPRESENTATION_ITEM with name MAGNETIC_FLUX_DENSITY_MEASURE (AP203 ed2/AP242 ed1)
Magnetic flux MEASURE_REPRESENTATION_ITEM with name MAGNETIC_FLUX_MEASURE (AP203 ed2/AP242 ed1)
Mole MEASURE_REPRESENTATION_ITEM with name AMOUNT_OF_SUBSTANCE_MEASURE (AP203 ed2/AP242 ed1)
Electric charge MEASURE_REPRESENTATION_ITEM with name ELECTRIC_CHARGE_MEASURE (AP203 ed2/AP242 ed1)
Capacitance MEASURE_REPRESENTATION_ITEM with name CAPACITANCE_MEASURE (AP203 ed2/AP242 ed1)
Conductance MEASURE_REPRESENTATION_ITEM with name CONDUCTANCE_MEASURE (AP203 ed2/AP242 ed1)
Inductance MEASURE_REPRESENTATION_ITEM with name INDUCTANCE_MEASURE (AP203 ed2/AP242 ed1)
When a measure with unit is not supported, it is exported as a string with a value equal to the full measure with the unit.
Note: At export, the current display unit of the measures is not taken into account. It is replaced by the MKS unit of the measure.

See also Validation Properties for User Defined Attributes.

The following User Defined Attributes are not managed:

  • Constant: value not modifiable is selected.
  • Hidden: visibility in the specification tree.
  • Comments.
  • Set of user parameters. The sets are ignored but all the parameters they contain are taken into account at export.
  • User parameters associated to a feature of a solid are not exported (only user parameters defined at the PartBody level are exported).