Adopts ISO 13584-20 which provides an EXPRESS schema for expressions, that models the subset of the allowed expressions in the EXPRESS language defined in ISO 10303-11 that corresponds to integer, real, Boolean and string data types. This schema uses the
AS ISO 13584.20:2004 history
1970AS ISO 13584.20:2004 Industrial automation systems and integration - Parts library - Logical resource: Logical model of expressions