1. Enterprise Systems Business Planning & Logistics Site Manufacturing Operations and Control Area Supervisory Control Basic Control Safety- Instrumented Systems (SIS) Process Industrial Automation & Control Systems Level 0 Level 1 Level 2 Level 3 Level 4

2. Enterprise Systems Engineering Systems System Management Supervisory Control Local Control Protection Equipment Operations Level 0 Level 1 Level 2 Level 3 Level 4 Control Centers Wide Area Network Site Monitoring & Local Display Remote Sites

3. Level 0 Level 1 Level 2 Level 3 Level 4 Level 5 Enterprise Site Business Planning & Logistics Operations Corporate Systems Engineering Systems Control Centers Enterprise Remote Sites Remote Site Basic Process Control Local Control Site Monitoring & Local Display Equipment Protection Supervisory ControlSystem Management Wide Area Network rderynck: proposed SP99 SCADA reference Jan 06 rderynck: proposed SP99 SCADA reference Jan 06 SCADA world does not normally think in terms of CIM levels but a possible mapping of the concept is shown here

4. Corporate Management and Finances Customer Services and Billing Customer Metering Control Center Supervision Substation Engineering Construction Outage Management Trouble Call Handling Protection Engineering Work Management Engineering Planning Energy Management System SCADA System Substation RTU or Master Intelligent Electronic Devices Substation HMI Substation Equipment Equipment on feeders Power Plant SCADA Power Plant Controllers Intelligent Sensors Scheduling and other Market Applications Corporate Systems Engineering Systems Control Center Operations Substations Systems Large Power Plants Customer Meters and Smart Gateways Distribution Feeders Customer Building Energy Management DER Controllers Intelligent Sensors Distributed Generation Generation Equipment Prime Mover Equipment Generation Equipment Operations Corporate Other Control Centers Electric Power System Functional Areas GIS AM/FM System See Notes page for source

5. Safety-Critical Protective Systems Safety Instrumented Systems Level 0 - Field Instrumentation Sensors, Transmitters, Control Valves Field Networks (e.g. Foundation Fieldbus, Profibus) Level 1 - Basic Process Control Batch Controllers Continuous Controllers Discrete Controllers Process Monitoring Level 2 - Area Supervisory Control Supervisory Controllers Primary Operator Interface Level 3 - Site Manufacturing Operations Production Control Optimizing Control Process History Windows Domains Level 4 - Site Business Planning Site Production Scheduling Site Accounting Site Business Network Process Protective System Production Control Process History Batch Control Discrete Control Supervisory Control Operator Interface Process Control Network WAN Router Level 5 - Enterprise Enterprise Financial Systems Continuous Control Process Monitoring Supervisory Control Operator Interface Enterprise Network Optimizing Control

6. Enterprise Site Business Planning and Logistics Site Manufacturing Operations and Control Area Control Basic Control Process Safety- Critical Level 5 Level 4 Level 3 Level 2 Level 1 Level 0 Area Control Basic Control Process Safety- Critical Enterprise Security Zone Manufacturing Security Zone Area Security Zone Safety Security Zone