STEP PHYSICAL FILE FORMAT

COBIE

6.1 STEP PHYSICAL FILE FORMAT

ISO/IEC 10303-21:2016

There are three related parts to the ISO standard related to the STEP Physical File (SPF) format:

ISO 10303-11, Industrial automation systems and integration — Product data representation and exchange — Part 11: description methods: The EXPRESS Language Reference Manual. This is the format of figures found in the referenced MVD.
ISO 10303-21, Industrial automation systems and integration — Product data representation and exchange — Part 21: Implementation methods: Clear text encoding of the exchange structure. This is typically referred to as the STEP Physical File Format.
ISO 10303-28, Industrial automation systems and integration — Product data representation and exchange — Part 28: Implementation methods: XML representations of EXPRESS schemas and data, using XML schemas. This is typically referred to as ifcXML.

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