AiVibeISA-95 (IEC 62264)
ISA-95, published internationally as IEC 62264, is the standard for integrating enterprise business systems with manufacturing control systems, defining a functional hierarchy of levels, activity models and object models for information exchange.
ISA-95 describes a functional hierarchy: Level 0 is the physical production process, Level 1 covers sensing and manipulating it, Level 2 covers monitoring and automated control, Level 3 covers manufacturing operations management, and Level 4 covers business planning and logistics. It defines the boundary between Level 4 enterprise systems such as ERP and Level 3 operations systems such as MES, with activity models for production, maintenance, quality and inventory operations and object models for exchanging information such as schedules, performance, materials, equipment and personnel.
Manufacturers, system integrators and software vendors use ISA-95 to scope MES projects, define interfaces between ERP and plant systems and agree common terminology. Its equipment hierarchy of enterprise, site, area, work centre and work unit is widely used to structure asset models, data platforms and unified namespaces. B2MML, an XML implementation of the ISA-95 object models, supports data exchange between systems.
ISA-95 levels are often confused with the network levels of the Purdue model; the two share origins but serve different purposes, functional integration in one case and network segmentation in the other. The standard is published in several parts. It describes what information is exchanged rather than prescribing particular software, so implementations differ in scope and detail.
Key points
- Standard for enterprise-control integration, also published as IEC 62264
- Levels 0 to 4 run from the physical process to business planning
- Defines the boundary between ERP (Level 4) and MES (Level 3)
- Its equipment hierarchy is widely used to structure asset and data models
- B2MML is an XML implementation of its object models
Where AiVibe comes in
AiVibe designs and manufactures the AiAmbA AI Factory, whose edge devices and AI agents let people talk to PLC, CNC and robot controllers in plain language. Agents only propose changes, a trained operator confirms each one, and the AI Factory never replaces a machine's control or safety systems.
Related terms
- Manufacturing Execution System (MES)Industry 4.0 & Manufacturing Operations
- Purdue ModelOT & Industrial Cybersecurity
- ISA-88 (Batch Control)PLC & Industrial Control
- Supervisory Control and Data Acquisition (SCADA)PLC & Industrial Control
- Industry 4.0Industry 4.0 & Manufacturing Operations
- Programmable Logic Controller (PLC)PLC & Industrial Control