Guide · MES
MES system: what it is and what it does on the shop floor
By João Brighenti, founder of MesttiReviewed on
What an MES does
Orders and scheduling
Shows each production order, its current step and the machine it will run on.
Reporting
Records quantity, time, scrap and who operated, ideally without typing.
Stops and OEE
Shows when each machine stopped, why, and how much capacity became good parts.
Quality
Brings inspection to the machine and keeps who checked, when and the result.
MES or ERP: what is the difference?
ERP
- Answers “what did I sell, buy and invoice?”.
- Information arrives when a document is entered.
- Level of detail: order, invoice.
MES
- Answers “what is happening in production right now, and why?”.
- Information arrives right away, from the machine and the operator.
- Level of detail: machine, operation, minute, reason.
Signs that the factory needs an MES
The day’s production is only known the next day.
Paper reports don’t match the inventory.
Delays show up on the delivery date.
Nobody can say why the machine stopped.
Each department has its own spreadsheet.
A customer returns parts and there is no way to prove the inspection.
How Mestti’s MES works
Engineering records the part and its routing, with each operation’s cycle time.
Planning schedules each machine and sees when each order should be ready.
The sensor counts parts and time; the operator starts the operation and explains stops on the tablet.
Quality inspects with photos and records non-conformities.
Management sees OEE, losses and cost per machine, live. Orders can come from the ERP and production goes back to it.
Sensors ready within 7 days, installed in 1 day.
See production and planning at Mestti
Questions about MES
Does an MES replace the ERP?
No. The ERP keeps handling orders, purchasing, inventory and invoicing. The MES handles what happens in production and sends back to the ERP what was produced.
Is an MES only for large manufacturers?
No. Mestti serves manufacturers of every size and can start with one department, with a few machines.
How long does it take to implement an MES?
At Mestti, sensors are ready within 7 days, installation takes 1 day and you get a 1-week free trial before deciding. Parts and routings can be added gradually.
Do my machines need a PLC?
No. The sensor reads the count or the machine’s electrical signal, with no PLC and no changes to the controls.
What if the factory’s internet goes down?
The sensor stores the events and sends them when the connection returns.
Articles on this topic (in Portuguese)
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