Here is the production process of a company with an MES and an ERP:
The operator launches his OF (Manufacturing Order), he will have at his disposal the necessary information to carry out his process. He can follow the progress of his production order in real time and report problems directly to his workstation.
The MES can retrieve his OF directly from the ERP. The MES is also able to retrieve the production schedule from the ERP in order to manage it. The MES will be able to propose an automatic scheduling thanks to these data.
At the workshop supervision level, the manager can use the information available in real time such as production quantities, the number of rejects, the causes of rejects, breakdowns / production stoppages (but also your own business indicators).
All this data can be sent to the ERP so that their collection and processing facilitate management.