As an educational association, MESA provides models that help those from a variety of levels and disciplines within the manufacturing and production enterprise to converge on common views of what they need to accomplish and how enterprise solutions can assist. The objective is to provide a platform for mutual understanding and planning for increased performance.
To this end, MESA has developed several models over the years. The current model, developed in 2008, spans from enterprise-level strategic initiatives to business operations to plant operations and actual production. It shows the interrelationships between strategies, enterprise-level operations, and plant operations. Objectives cascade down, and results are reported up against those objectives. It also provides a conceptual illustration of how events in the plant operation feed and inform all other events, and how aggregate views from the enterprise can drill down through operations to the real-time production views.
Previous versions of the MESA model focused exclusively on operations (as did the organization itself at the time). The Collaborative MES or C-MES model from 2004, focused on how core operations activities interact with business operations in a model that represented issues such as increased competition, outsourcing, supply chain optimization, and asset optimization. Inside the c-MES box, the model depicts functions typically found in the integrated MES product offerings at that time. The c-MES world then interfaces to the other business operations areas around the edges.
MESA White Paper #8 outlines the objectives of this model: "What characterizes Collaborative Manufacturing Execution Systems (c-MES)? These systems combine earlier generation MES functionality to operate and improve plant operations and add better ability to integrate with other systems and people in the enterprise and value chain/stream. Although some of this data has been shared through traditional communications, the Internet and web-based technologies such as XML and web services provide a significant leap in accuracy and timeliness of communications."
Prior to that, the original "MESA-11" model was published in 1997. This model indicated 11 core functions of a manufacturing execution system, again with relationships to external enterprise systems and functional areas. This model depicts what at the time was the MESA view of the functions within a manufacturing execution system, including scheduling and sequencing, maintenance, and quality.
Learn more about the MESA Model and the Evolution of the Model at the following links: