MES

Manufacturing execution system (MES) is an information system that tracks and documents the transformation of raw materials to finished goods. It manages, monitors, and synchronizes execution of manufacturing operations on the shop floor and bridges the gap between enterprise planning systems (ERP) and control systems (SCADA, PLCs, robotics).

Key functions include production scheduling and dispatching, order execution, work-in-process (WIP) tracking, quality management and compliance (e.g., lot, batch, genealogy), materials and BOM management, document control, labor and resource management, maintenance management, data collection from shop floor devices, real-time visibility, and performance analysis such as OEE (overall equipment effectiveness).

Typically modular and configurable; common modules: production management, quality management, materials management, performance, document control, maintenance; supports traceability and genealogy; integrates with ERP for planning, inventory, and financials; communicates with shop-floor hardware via protocols such as OPC UA or MTConnect. Employs standards like ISA-95/ISO 62264 for enterprise-control integration and ISO 22400 for performance metrics.

Deployment models: on-premises, cloud, or hybrid; benefits: improved throughput, reduced waste, better compliance, faster changeovers, accurate data for analysis. Challenges: integration with existing systems, data quality, cybersecurity, and change management.