MES and quality control: why integrate them and how
Quality control with MES: when production and quality stop working on different data
In the plants we work with, quality control is almost always there. The problem is where it lives: on paper sheets filled in at the end of the shift, on Excel files that each department manages its own way, or in dedicated software that knows nothing about what happens on the lines.
As a result, quality becomes a downstream check. Defects are found when the batch is already finished, non-conformities are reconstructed from memory and, when an audit or a complaint arrives, it takes days to work out which materials, machines and operators were involved.
This article explains what changes when quality control moves into the MES, when dedicated software is needed instead, and how to integrate the two without entering the same data twice.
The problem is not checking too little: it is checking far from the process
When quality and production run on separate systems, the symptoms are always the same:
• inspection results are not linked to the order, the operation and the batch, so nobody can say for certain what they refer to;
• process parameters such as temperatures, pressures and times stay in the machines and are never read together with scrap;
• non-conformities are opened late and corrective actions have no clear owner;
• conformity documents and certificates are prepared by hand, copying data that already exists elsewhere.
A check that is not linked to the process that generated it records a defect, it does not prevent the next one.
What changes when quality control lives in the MES
An MES already records orders, operations, batches, machines and operators. Bringing quality control into it means using the same data for two purposes: running production and proving its quality.
1. Checks linked to order, operation and batch
The control plan defines which checks to perform, at which stage and how often. Operators see on their terminal only the checks planned for the current job and record the result as they perform it, with no transcription.
2. Process parameters as the first line of quality
Many defects start as a process drift before they become visible on the part. If the MES reads parameters from the machines and compares them with the expected limits, the anomaly shows up while production is running and, when needed, the line can be stopped automatically.
3. Non-conformities that start from the data
A failed check opens a non-conformity already linked to batch, operation, machine and operator. Root cause, owner and corrective action are tracked until closure.
4. Genealogy ready for audits and recalls
Every finished batch is linked to the raw material batches, the operations it went through, the recorded parameters, the checks performed and the operators. When a complaint arrives, the affected batches and the unaffected ones are identified at once, and the evidence for customers and certification bodies comes out of the system instead of being reconstructed.
MES, quality control software or both?
The question we are asked most often is whether an MES can replace quality control software. It depends on where the check takes place.
• In the department, on the line. Checks performed by operators and supervisors, linked to order and operation, with machine parameters and line stops on anomalies: the MES quality module is enough.
• Along the supply chain. Inspections at suppliers and subcontractors, on mobile and offline, with AQL standards, photos, signatures and supplier performance: dedicated quality control software is needed.
• In both places. Quality, production and purchasing need a single view of product quality, internal and external: MES and dedicated software should be integrated.
In long supply chains, typical of fashion, leather goods and contract manufacturing, quality is often decided outside the plant. There the MES alone is not enough, but it becomes the place where supply chain data and shop floor data meet.
How to integrate MES and quality control: five steps
1. Start from the batch. Order, operation and batch are the key that holds everything together. If batches are not uniquely tracked today, that is the first problem to solve.
2. Decide which system owns which data. The control plan can live in the MES or in the quality software, not in both. The same applies to defects and non-conformities.
3. Digitise a few critical checks. Five checks recorded properly and linked to the batch are better than fifty filled in at the end of the shift.
4. Connect machines where quality depends on the process. Temperature, pressure and times should be read where they actually determine product conformity.
5. Integrate, do not copy. Results, non-conformities and batch data must flow between systems through integrations, not through exports and copy-paste.
The mistakes we see most often
• Digitising the paper form as it is. The result is the same sheet on a tablet, still disconnected from the batch.
• Starting with the whole plant. A project that starts from every line and every check stalls before it delivers results.
• Keeping two parallel control plans. If the MES and the quality software define the same checks, sooner or later they will say different things.
How we approach it at Advinser
We work with manufacturing and fashion companies on both sides of the problem. In /.MES, the Quality and traceability management area brings checks into the production cycle: control plans, in-line results, non-conformities and corrective actions, automatic line stops on anomalies, product genealogy and printing of labels and certificates. Machine data comes from the Equipment monitoring and hardware integration area.
When quality is decided along the supply chain we use /.QControl: the supervisor configures defects and inspection cycles on desktop, the checker performs inspections from the mobile app, even offline, with photos and digital signature, and the performance of suppliers and subcontractors becomes measurable.
A concrete example is the project for a food-grade rubber manufacturer: full traceability from raw material cutting to vulcanisation, with critical parameters such as temperature and pressure recorded on the batch and production documents in digital form.
Want to understand how to bring quality control into your process?
Frequently asked questions about MES and quality control
Can an MES replace quality control software?
For checks carried out in the department, often yes: control plans, results, non-conformities and conformity documents can live in the MES. When inspections take place along the supply chain, at suppliers and subcontractors, you need a dedicated tool that the MES does not replace but integrates with.
How do you integrate an MES with the quality control software we already use?
You start from the common key, that is order, operation and batch, and decide which system owns which data. Then results, non-conformities and batch data are exchanged through dedicated integrations, so nobody has to copy the same numbers by hand.
Does the MES help monitor machines for quality too?
Yes. By connecting the MES to machines, PLCs and SCADA, process parameters are recorded on the batch and compared with the expected limits. A process drift becomes visible before it turns into scrap, and on an anomaly the line can be stopped.
What is product genealogy in an MES?
It is the link between each finished batch and everything that produced it: raw material batches, operations, parameters, checks and operators. It supports audits and recalls, because it lets you identify the affected batches in both directions.
Where should we start?
From one line or one department, with a few critical checks recorded digitally and linked to the batch. Once that flow works, extend it to non-conformities, machine parameters and the supply chain.
