1 reply to this topic

[Rainbow]

Why can't MES be a fully integrated application that can be contained within the ERP suite?
It seems to me that the ISA 95 MES layer adds complexity and confusion. Any comments?

Wonder whether this is the right place to ask.

[venkatjaya]

This is a good question, but there are basically good answers as well.
I'll try and lay them out below.

First of all, note the name ERP (Enterprise Resource PLANNING) tool, and
MES (Manufacturing EXECUTION System.)

Most MES systems are designed to run as real-time control and execution
systems, linked directly to machines and systems, and MES systems tend
to be even bigger overall than many ERP systems. Often, MES systems are
designed to run on REAL-TIME OS kernels, typically not your average
Windows server.

MES systems also generate huge amounts of data that must be kept to do
the job. If you checked on the integration points between your typical
ERP system and MES system, you will find that outside of part records
and raw materials records, the main integration points are based on work
orders or batch orders. The MES system takes inventory and plant
planning information, executes production, and returns finished-goods
and completed work-orders.


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