ISA95 “Levels” for Enterprise Integration

Purdue Reference Model, “95” Provides a Model that End Users, Integrators and Vendors Can Share in Integrating Applications at Key Layers in the Enterprise

Share Print Related RSS

Level 0—The physical process — Defines the actual physical processes.

Level 1—Intelligent devices — Sensing and manipulating the physical processes. Process sensors, analyzers, actuators and related instrumentation.

Level 2—Control systems — Supervising, monitoring and controlling the physical processes. Real-time controls and software; DCS, human-machine interface (HMI); supervisory and data acquisition (SCADA) software.

Level 3—Manufacturing operations systems — Managing production work flow to produce the desired products.Batch management; manufacturing execution/operations management systems (MES/MOMS); laboratory, maintenance and plant performance management systems; data historians and related middleware. Time frame: shifts, hours, minutes, seconds.

Level 4—Business Logistics Systems — Managing the business-related activities of the manufacturing operation. ERP is the primary system; establishes the basic plant production schedule, material use, shipping and inventory levels. Time frame: months, weeks, days, shifts.

Want More
Read our article Upstairs, Downstairs. Data going up, data going down? Engineers and IT shake hands in the middle as OPC gives way to XML, Web Services.

 

Share Print Reprints Permissions

What are your comments?

You cannot post comments until you have logged in. Login Here.

Comments

No one has commented on this page yet.

RSS feed for comments on this page | RSS feed for all comments