MES[edit]

A wide variety of systems arose using collected data for a dedicated purpose. Further development of these systems during the 1990s introduced overlap in functionality. Then the Manufacturing Enterprise Solutions Association International (MESA) introduced some structure by defining 11 functions that set the scope of MES. In 2000, the ANSI/ISA-95 standard merged this model with the Purdue Reference Model (PRM).[6]


A functional hierarchy was defined in which MES were situated at Level 3 between ERP at Level 4 and process control at Levels 0, 1, 2. With the publication of the third part of the standard in 2005, activities in Level 3 were divided over four main operations: production, quality, logistics and maintenance.


Between 2005 and 2013, additional or revised parts of the ANSI/ISA-95 standard defined the architecture of an MES into more detail, covering how to internally distribute functionality and what information to exchange internally as well as externally.

Management of product definitions. This may include storage, version control and exchange with other systems of master data like product production rules, bill of material, bill of resources, process set points and recipe data all focused on defining how to make a product. Management of product definitions can be part of .

product lifecycle management

Management of resources. This may include registration, exchange and analysis of resource information, aiming to prepare and execute production orders with resources of the right capabilities and availability.

. These activities determine the production schedule as a collection of work orders to meet the production requirements, typically received from enterprise resource planning (ERP) or specialized advanced planning and scheduling systems, making optimal use of local resources.

Scheduling (production processes)

Dispatching production orders. Depending on the type of production processes this may include further distribution of batches, runs and work orders, issuing these to work centers and adjustment to unanticipated conditions.

Execution of production orders. Although actual execution is done by systems, an MES may perform checks on resources and inform other systems about the progress of production processes.

process control

Collection of production data. This includes collection, storage and exchange of process data, equipment status, material lot information and production logs in either a data historian or relational database.

Production performance analysis. Create useful information out of the raw collected data about the current status of production, like Work In Progress (WIP) overviews, and the production performance of the past period like the or any other performance indicator.

overall equipment effectiveness

Production . Registration and retrieval of related information in order to present a complete history of lots, orders or equipment (particularly important in health related productions, e.g. pharmaceuticals).

track and trace

Over the years, international standards and models have refined the scope of such systems in terms of activities. These typically include:.

To LIMS: quality test requests, sample lots, statistical process data

From LIMS: quality test results, product certificates, testing progress

To WMS: material resource requests, material definitions, product deliveries

From WMS: material availability, staged material lots, product shipments

To CMMS: equipment running data, equipment assignments, maintenance requests

From CMMS: maintenance progress, equipment capabilities, maintenance schedule

Enterprise control

Enterprise integration

Laboratory information system

Manufacturing operations management

Process development execution system

Product lifecycle management

Purdue Enterprise Reference Architecture

Scholten, Bianca (2009). MES guide for executives: why and how to select, implement, and maintain a manufacturing execution system. Research Triangle Park, NC: International Society of Automation.  9781936007035.

ISBN

Enterprise-Control System Integration Part 1: Models and Terminology. Research Triangle Park, North Carolina, USA: International Society of Automation. 2000.  1556177275.

ISBN

Enterprise-Control System Integration Part 3: Activity Models of Manufacturing Operations Management. Research Triangle Park, North Carolina, USA: International Society of Automation. 2005.  1556179553.

ISBN

A Reference Model For Computer Integrated Manufacturing (CIM) Purdue Research Foundation, 1989