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Published

Work center and production line

EM-MFG-03 · em-mfg-03

Give planning, execution and performance records one stable identity for each place where production work is done, separate from the machines inside it.

Enterprise profiles Enterprise subject EnterpriseMFG
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

2 bundles · 2 layers · 4 findings · 8 questions

Structure This bundle records the production resource's organizational placement and accounting links.

Hierarchy

This layer identifies the resource type and its declared parent.

Placement

This finding places a work center, production line or cell within its applicable equipment hierarchy.

  1. What resource type, site, area and immediate parent are recorded for this work center, line or cell, and from what effective date?
  2. Which assets are installed in this work center, line or cell at the specified effective date?

Accounting link

This finding links the production resource to its accounting responsibility.

  1. Which cost center carries the costs of this production resource at the specified effective date?
Capability and capacity This bundle records supported work and the basis of nominal capacity.

Capability and calendar

This layer records capability, qualification and scheduled availability.

Capability

This finding describes the work the production resource is qualified to perform.

  1. Which operation types and product families can this production resource perform?
  2. Which qualifications does this production resource hold for regulated products at the specified effective date?

Capacity

This finding states nominal capacity, its calendar basis and approved changes.

  1. What nominal capacity does this production resource have, in which unit and on which calendar?
  2. Which shifts and planned shutdowns appear in this production resource's calendar for the identified reporting period?
  3. Which changes to this production resource took effect during the reporting period identified by its start and end, and who approved each change?

Classifiers Filled

Family
Enterprise profiles
Category
Enterprise subject
Entry kind
subject
Domain
EnterpriseMFG
Industry
Manufacturing
Tags
EM-MFG-03W-INDsubjectWorkCenterProductionLineEquipmentHierarchyLevelWorkCenterCapabilityProductionCalendar

What it is Filled

A unit of production capability: a work center, line or cell, its place in the plant hierarchy, capability, calendar and nominal capacity. Individual machines are assets in the asset contour.

Why it exists Filled

Give planning, execution and performance records one stable identity for each place where production work is done, separate from the machines inside it.

Distinguishing features Filled

  • A work center is a capability unit, not a machine and not a cost center.
  • It keeps its identity when the assets inside it are replaced.
  • Nominal capacity is stated with its unit and calendar, separate from planned load.
  • In the ISA-95 role-based equipment hierarchy, process cells, production units and production lines are kinds of work center within an area, while work cells are work units within a work center.

What robots and AI may and may not do Filled

Must not

  • Merge or split work centers without approval.
  • Treat a cost center as the production resource.
  • Change shift calendars that affect workers without an authorized person.

Only with a human decision

  • Changes of hierarchy and calendars must be approved by the plant manager or a delegate.

May

  • Report the current hierarchy and calendar of a work center.
  • Flag capacity figures without a unit or calendar basis.
  • Propose calendar changes for human approval.

Moral aspects Filled

  • Shift calendars affect the working time and rest of employees.
  • Capacity figures used as targets can push an unsafe work pace.

Who is affected

  • Operators and shift staff
  • Planners
  • Maintenance staff

Owners Filled

Steward

The plant manager who answers for the production resources of the site.

Master systems

  • Manufacturing execution system
  • ERP
  • Enterprise asset management system

Links to other meta-models Filled

neighbor

  • EM-OPS-03
  • EM-FAC-01
  • EM-WRK-05
  • EM-FIN-01
  • EM-MFG-01
  • EM-MFG-07

references

  • WM-OBJ-006 - conceptual-candidate
  • WM-BLT-006 - conceptual-candidate

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • A work center, line or cell has an identifier unique within the plant.
  • Its position is identified through its typed parent in the recorded plant hierarchy, such as an area for a work center or a work center for a work unit.

Direct properties not applicable Not applicable

Not applicable

Enterprise record contour: physical properties belong to referenced world models.

Recognition required Filled

  • Records show a resource code, its resource type, its parent in the hierarchy, capability and calendar.
  • A work center must be distinguished from a machine asset and from a cost center.

Capabilities and actions required Filled

  • The contour supports capacity planning, order dispatch and performance reporting per work center.

Hazards and failure modes required Filled

  • Wrong capability data can route work to a line that is not qualified for it.
  • Overstated capacity leads to unrealistic schedules and overtime.

Standards and interfaces optional Filled

  • ISA publishes ISA-95, adopted internationally as IEC 62264, which defines a role-based equipment hierarchy.
  • The Industrial Digital Twin Association publishes the Asset Administration Shell specifications for equipment description.

Context of use required Filled

  • The contour is used in plants with planned production on shared resources.
  • Regulated sectors may require qualification records for equipment used in production.

Sources Filled

  1. ISA-95 / IEC 62264: role-based equipment hierarchy
  2. IDTA Asset Administration Shell: description of equipment and its capabilities
  3. ISO 22400: availability and capacity indicators
  4. ISA-95 Standard: Enterprise-Control System Integration - Checked live (HTTP 200) on 2026-10-21.
  5. IDTA Asset Administration Shell specifications - Checked live (HTTP 200) on 2026-10-21.

Open questions

  • How does the work center hierarchy relate to the asset register and to cost centers?
  • How is nominal capacity distinguished from available and planned capacity?
  • When does replacing a machine change the work center identity?
  • Settle the boundary and the reuse, extend or new decision against the current specifications.
  • Confirm the semantic crosswalk, rights and source mastership.
  • Choose immutable references and run fixture checks before claiming publication readiness.

Machine files

Card as JSON Source Card backlog vercy.card/1

Provenance

enterprise research programme · published-partial

Built from: enterprise/models/em-mfg-03/brief.json, ver-cy/world-models/card-supplements/em-mfg-03.json