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MTConnect Data Item Types & SubTypes
A glossary for how MTConnect DataItem Types, SubTypes, and units describe machine data streams.
Why DataItem definitions matter
DataItem Types and SubTypes document the meaning of MTConnect telemetry so downstream systems can interpret equipment data consistently.
- Type defines the core class of data (e.g., availability, execution, temperature).
- SubType adds context for specialized readings or states.
- Units describe how values are measured and compared.
Adapter pages link to per-equipment coverage lists as validation evidence becomes available.
Related resources
MTConnect Data Item Excel Report
Download a workbook of MTConnect DataItems from the latest standard release.