In the common reading, ERP sits at the business planning level and MES at the manufacturing operations management level; the levels below are the control systems on the shop floor.
How it affects your decision
ISA-95 moves the question «should this data live in the ERP or in the MES» from debate to a shared framework. In an MES or IIoT project, writing the boundary and data flow between the two systems with this framework at the start reduces the integration surprises that come up later.
Where you will meet it
Related terms
Source
What does this term mean in your project?
Talk to a consultant; let’s look at it together through your own processes.