Manufacturing Execution System (MES) definition in Computer Security terms:
Definition(s): A system that uses network computing to automate production control and process automation. By downloading recipes and work schedules and uploading production results, a MES bridges the gap between business and plant-floor or process-control systems.
Source(s): NIST SP 800-82 Rev. 2 (NISTIR 6859)
reference: CSRC Glossary