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AVEVA™ Manufacturing Execution System 2023 R2

Global specifications

  • Last UpdatedOct 28, 2024
  • 2 minute read

You can use the Global Specifications module to create and maintain global specifications. You can use the specifications defined in the Global Specifications module in the Processes and Work Orders modules to add specifications to a specification version of an operation, a process, and a job.

Global specifications are not used for capturing quality data. See QM specifications for quality functionality.

Specifications represent a collection of values for settings that can be used during an operation for a process when producing an item for a work order. Specifications are used for setting values (with an optional minimum and maximum) that should be used at run time during the execution of an operation. These are also known as operating setpoints. For example: When you run a job on an entity doing a mixing operation, the specifications for the operation can be used by the Operation Capability Object (OCO) to load the setpoints in a PLC where the setpoints are different when different items are produced.

You can assign multiple specification versions to an operation. For more information on specification versions, see Assign specifications to an operation. However, you can define only one version as the preferred version. The preferred specification version is used when a work order is created from a process. All operations in a process use that same specification version.

A specification version can contain multiple specifications. When you create a work order from a process, the preferred version is chosen for the job. You can also change the specification version for the job if you have the privilege to edit the specification version.

The entity and step specifications assigned to a process operation are shown below.

The MES Client Global Specifications workspace highlighting the Entity and Step Specification properties used to set process runtime settings.

When you open the Global Specifications workspace tab, a list of the existing specifications is shown.

The Global Specifications module is in the Operations Management group in the Navigation Bar. For more information on groups and modules, see Groups and modules.

The MES Client Global Specifications workspace displaying a list of roaster temperature and roaster time specifications.

A global specification group organizes specifications, which are defined template-style. When a specification is assigned to an operation’s specification version, it is given the specific values relevant to that item/operation/entity combination.

The global spec groups display no detailed information because they exist in name only, to organize the specifications.

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