The values '3 1' and '3 2' indicate extended STEP-Files as defined in the 2001 standard with several DATA sections, multiple schemas and FILE_POPULATION support. The value '2 2' enforcing external mapping is also possible but only very rarely used. Often, one will find here the value _'2 1'_. The conformance option is either "1" for internal and "2" for external mapping of complex entity instances. Possible versions are "1" for the original standard back in 1994, "2" for the technical corrigendum in 1995 and "3" for the second edition. The version and conformance option of this file. Except for the data fields time_stamp and FILE_SCHEMA all fields may contain empty strings. The HEADER section has a fixed structure consisting of 3 to 6 groups in the given order. #19=APPLIED_ORGANIZATION_ASSIGNMENT(#10,#20,(#16)) Īs seen in the above example, the file is split into two sections following the initial keyword ISO-10303-21 : #12=APPLICATION_CONTEXT('mechanical design') #11=PRODUCT_DEFINITION_CONTEXT('part definition',#12,'manufacturing') * description */ ('A minimal AP214 example with a single part'),įILE_SCHEMA (('AUTOMOTIVE_DESIGN ')) In practice, however, most implementations only use a single data section (1st edition encoding).
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