In designing the Melody system architecture, ABB has created a basis for plug-and-play management. Melody has a unique network-oriented architecture, which offers seamless communication for all
automation levels – from input/output to plantwide and cross-plant systems.
Overview of the hierarchical system structure:
- Operator and management level: 800xA Process Portal, 800xA Information Management, 800xA Asset Optimization
- Engineering tool Composer: planning, engineering, commissioning, diagnostics, and maintenance
- Control level: Control IT Controller CMC70 or 800xA Controller AC 870P
- Input/output units: Melody Rack I/O, 800xA S800/S900 PROFIBUS remote I/O