Glossary
Purdue model
In practice
It splits a plant into levels: the physical process at level 0, sensors and controllers at levels 1 and 2, site operations such as MES/MOM at level 3, and business systems such as ERP at levels 4 and 5. It's mostly used in OT security, to decide which systems can talk to which, and the levels line up closely with ISA-95.
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Related terms
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