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MES

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MES 制造执行系统

目录

MES定义

NIST对MES定义-注重构成

Manufacturing Execution System——生产制造执行系统,1990年所诞生的一个新的软件范畴。

美国国家标准协会(NIST)对“MES”的定义:“从生产计划/工单下达到成品产出的整个过程中,采集所有软性、硬性的数据,从而使我们能够完成生产管理以及生产优化。”


MESA (MES国际联合会)对MES的定义-注重功能

MES通过信息传递对从订单下达到产品完成的整个生产过程进行优化管理。当工厂发生实时事件时,MES能对此及时做出反应、报告,并用当前的准确数据对它们进行指导和处理。

这种对状态变化的迅速响应使MES能够减少企业内部没有附加值的活动,有效地指导工厂的生产运作过程,从而使其既能提高工厂及时交货能力,又能提高生产回报率。

AMR对MES的定义-注重系统性

制造执行系统MES (Manufacturing Execution System)是由AMR提出的,AMR将MES定义为“位于上层的计划管理系统与底层的工业控制之间的面向车间层的管理信息系统”,它为操作人员/管理人员提供计划的执行、跟踪以及所有资源(人、设备、物料、客户需求等)的当前状态,重点解决车间生产问题。

生产设备

数据采集

MES相关的一些业务和术语

节拍

防错

短装

偏离

改制

回冲

集配 Kitting

OAGIS

FMEA

BPM

防错

Operation:操作,作业


Hold:扣押, 保留,保持

MES厂商

Simatic IT


参考

MOM

ZigBee

WiFi

Petri网

FSM

B2MML

现场自动化系统(Shop Floor Control System, SFC)

WIP

SPC

PLC

SCADA

现场网络

ProfiBus

MES资源

e-worksen:Manufacturing execution system

参考

实时数据库

MESA站点 MESA模型


Manufacturing Execution Systems (MES) are information technology systems that manage production in factories. The scope of such systems is somewhat imprecise, but typically includes:

  • presentation of schedules (often derived from ERP or Advanced Planning & Scheduling systems) to workcentres
  • collection of production information (time, quantity, quality,...)
  • analysis of production information (e.g. "How many units of this product did this workcentre produce last month?")
  • control of planned and unplanned maintenance (although the planning of this is often relegated to other, special-purpose, systems)
  • quality control
  • shipping / dispatch
  • product labelling
  • product traceability (particularly important in safety-critical applications, e.g. pharmaceuticals)

Manufacturing execution systems typically do not encompass process control, i.e. the real-time control of machinery, but there may be an overlap.

Manufacturing execution systems are the subject of an international standard, ANSI/ISA-95.

Relationship with other management tools and systems

MES can be integrated into Operations Execution Systems and ERP systems. An Operations Execution System controls production and other areas of the company's operations such as maintenance and inventory tracking. MES and OES are the system layers between the ERP and plant floor control systems or devices, such as PLCs that control individual machines or production lines. MES and OES effectively link these two layers together and enable an exchange of information.

Relationship to PDES

The data that are used for the MES are the same data that are used for Process Development Execution Systems (PDES). However, a PDES is used to develop manufacturing processes, while MES is used to execute and monitor the actual production using the developed processes.

Therefore, the toolset and focus of a PDES is on lower data volume but higher flexibility and experimentation freedom.

Reasons to implement MES include:

  • Automate management of recipes (process manufacturers)
  • Scheduling, including the management of priorities
  • Production reporting
  • Key Performance Indicator (KPI) tracking
  • Event or exception management
  • Product or materials tracking
  • Intelligent decisions to influence production and cost management
  • Measure and manage Overall Equipment Effectiveness (OEE)
  • Ease management of resources, including inventory and personnel

MES module and function is aligning with ISA 95, MESA group is an independent MES standard org. http://WWW.MESA.ORG

Sources

  • Managing Automation MES Knowledge Center [1]
  • Market Overview: Manufacturing Execution Systems by Forrester Research [2]
  • MES: A guide to getting started; PACE-Australia's Process & Control Engineering website [3]
  • AutomationWorld, MES Definition Work Continues, March 2006 * [4]

See also

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