许多国际组织都对MES的功能给出了明确的定义，并且还相继开发了相应模型，用于描述和标准化这类软件系统。在MESA(制造企业解决方案协会)给出的模型中，ISA-95标准定义了MES系统集成时所用的术语和模型。-Many international organizations have the function of the MES give a specific definition, and also have developed a corresponding model, used to describe this type of software systems and standardization. At MESA (Manufacturing Enterprise Solutions Association) give the model, ISA-95 standard definition of the MES system integration of the terms used and models.