SCADA Hierarchy

Complex SCADA systems are organized in hierarchical levels

Each level handles specific tasks within the automation system

Data flows from field devices up to enterprise systems

• Level 1: Sensors and Actuators (Field Level)
• Level 2: RTUs, PLCs, and Marshalling Systems
• Level 3: Industrial Communication Infrastructure
• Level 4: SCADA Servers / Supervisory Control Layer
• Level 5: Enterprise and Business Systems