Section 2: Purdue Model Structure
The strength of the Purdue Model lies in its clear, layered structure, which organizes all industrial components into distinct functional levels.
- Level 0: Physical process (sensors, actuators)
- Level 1: Control systems (PLCs)
- Level 2: Supervisory systems (SCADA, HMI)
- Level 3: Operations and production management
- Level 4: Business logistics systems (IT)
- Level 5 (sometimes added): Enterprise-level cloud/remote services
