process_property

NOTE An explanation of a template and the associated instantiation path is provided in the Template overview section.

This template describes how to represent a numerical value with unit for a process property.

EXAMPLE The number of hours taken to perform some action.

The following input parameters are defined for this template:

The following reference parameters are defined for this template:

The instantiation path shown below specifies the entities that are to be instantiated by the template.

A description of templates and the syntax for the instantiation path is provided in the Reading Capability Templates help section.

-- Instantiate Representation entity
Activity_property_representation

-- Bind the Activity_property_representation entity to reference parameter ^prop_repr
%^prop_repr = Activity_property_representation%

-- Set the Activity_property_representation attributes role and description to be ignored
^prop_repr.role = '/IGNORE'
^prop_repr.description = '/IGNORE'

-- Instantiate template representing_numeric_property
/representing_numeric_property(
    value=@value,
    unit=@unit,
    unit_ecl_id=@unit_ecl_id,
    si_unit=@si_unit,
    context=@context,
    context_ecl_id=@context_ecl_id)/

-- Bind the Representation entity instantiated in the template representing_numeric_property
-- (bound to the reference parameter representation in representing_numeric_property)
-- to ^representation in this template and assign Activity_property_representation.rep to it
%^representation = $representing_numeric_property.representation%
^prop_repr.rep -> ^representation

-- Assign text value to property
^prop_repr.property -> @property

The following entities are instantiated with attributes as specified:

Entity in path	Value	Inherited from
Activity_property_representation.role	'/IGNORE'	—
Activity_property_representation.description	'/IGNORE'	—

The following section details how the process_property_numeric template can be optionally characterized by assigning other constructs to it. These are characterizations commonly applied to the template. The ISO 10303-239 EXPRESS model may enable other assignments to the entities instantiated by the template.

The following characterizations may apply:

Characterization Assigning representation role

NOTE this characterization is optional.

A role can be assigned to each representation of a property through external reference data. The role is used to distinguish several representations from each other, such as Textual_estimate, Numeric_estimate, and Numeric_actual.

The role of the property representation is represented by using the template assigning_reference_data to assign a role to Activity_property_representation. Only one role may be assigned to each representation.

Figure 7 — Characterization by role of process_property_numeric template

Characterization Assigning date and time

NOTE this characterization is optional.

Dates can be associated with the assignment of property value representation by using the templates assigning_time.

Figure 8 — Characterization by date of process_property_numeric template

A creation date is commonly assigned to the template process_property_numeric.

The date of creation of the property value representation is represented by using the template assigning_time to assign a date and time to Property_value_representation (reference parameter ^representation in template representing_numeric_property). The date and time assignment is classified as: "Date_actual_creation" (urn:plcs:rdl:std:Date_actual_creation) to indicate that it is the date (and time) when the property value representation was actually created. This is illustrated in Figure 8.

Other dates may be assigned instead.

Characterization Assigning organization or person

NOTE this characterization is optional.

An organization or a person within an organization can be associated with the property value representation by using the templates assigning_organization, or assigning_person_in_organization.

Figure 9 — Characterization by organization of process_property_numeric template

A common role in which an organization is assigned to a property value representation is as a "Creator of" the representation. The creating organization is represented by using the template assigning_organization or assigning_person_in_organization assigned to Property_value_representation (reference parameter ^representation in template representing_numeric_property). The assignment of the organization (Organization_or_person_in_organization_assignment) is classified as: "Creator_of" (urn:plcs:rdl:std:Creator_of) to indicate that this organization created the property value representation. This is illustrated in Figure 9.

Other roles of an organization with regard to a property value representation may be assigned instead.