Manufacturing execution system

Manufacturing execution systems (MES) are computerized systems used in manufacturing to track and document the transformation of raw materials to finished goods. MES provides information that helps manufacturing decision-makers understand how current conditions on the plant floor can be optimized to improve production output.^[1] MES works as real-time monitoring system to enable the control of multiple elements of the production process (e.g. inputs, personnel, machines and support services).

MES may operate across multiple function areas, for example management of product definitions across the product life-cycle, resource scheduling, order execution and dispatch, production analysis and downtime management for overall equipment effectiveness (OEE), product quality, or materials track and trace.^[2] MES creates the "as-built" record, capturing the data, processes and outcomes of the manufacturing process. This can be especially important in regulated industries, such as food and beverage or pharmaceutical, where documentation and proof of processes, events and actions may be required.

The idea of MES might be seen as an intermediate step between an enterprise resource planning (ERP) system, and a supervisory control and data acquisition (SCADA) or process control system, although historically, exact boundaries have fluctuated. Industry groups such as Manufacturing Enterprise Solutions Association were created in the early 1990s to address the complexity, and advise on the execution of manufacturing execution systems.

Manufacturing execution systems, known as MES, are software programs created to oversee and enhance production operations. They play a role in boosting efficiency resolving production line issues swiftly and ensuring transparency by collecting and analyzing real time data.

MES effectively manage production resources like materials, labor, equipment and processes. Their features include tracking production, quality management work order handling, inventory control, data analysis and reporting. These capabilities empower businesses to streamline their production processes.

These systems often integrate with ERP systems to align the company's business operations with its production activities. This integration fosters information flow across departments enhancing efficiency and productivity. Organizations like MESA International provide guidance in implementing and advancing MES systems to help companies navigate the intricacies of manufacturing operations.^[3]