The National Institute of Standards and Technology (NIST) reported that a major milestone was reached in the standardization of
.
Eight parts of this standard are now technically stable, reaching either the committee draft, draft international standard or international standard stage.
According to NIST, the PSL defines a neutral representation for manufacturing processes. Process data is used throughout the lifecycle of a product, from early indications of manufacturing process flagged during design, through process planning, validation, production scheduling and control.
The notion of process also underlies the entire manufacturing cycle, coordinating the workflow within engineering and shop floor manufacturing.
The PSL standard, according to NIST, is a fully axiomatized, first-order logic ontology to support the unambiguous description and exchange of this process information. NIST Manufacturing Engineering Laboratory researcher Michael Gruninger played a leading role in having the following parts of ISO 18629 published:
- ISO/IS 18629-11 - Process Specification Language (PSL Core) [international standard]
- ISO/IS 18629-12 - Process Specification Language (PSL Outer core) [international standard]
- ISO/DIS 18629-41 - Definitional extension: Activity extensions [draft international standard
- ISO/CD 18629-42 - PSL Part 42, Definitional extensions: Temporal and state extensions [draft international standard]
- ISO/CD 18629-13, PSL Part 13, Time and ordering theories [draft international standard]
- ISO/CD 18629-14 - PSL Part 14, Resource theories [draft international standard]
- ISO/CD 18629-43 - PSL Part 43, Definitional extension: Activity ordering and duration extensions [draft international standard]
- ISO/CD 18629-44 - PSL Part 44, Definitional extension: Resource extensions [draft international standard].
For more information, contact Gruninger at (301) 975-6536.
Source: National Institute of Standards and Technology (NIST).