MES vs ERP — Difference and Integration
Many manufacturers ask: we already have ERP, why MES? This article clarifies the boundary and synergy.
1. Different positioning
| Dimension | ERP | MES |
|---|---|---|
| Layer | Enterprise planning | Shop-floor execution |
| Object | Orders, purchasing, inventory, finance | Work orders, operations, equipment, quality |
| Granularity | Day / week | Second / minute |
| Data | Result-type | Process-type, real-time |
2. Why MES
ERP plans must land on the shop floor, but real status (progress, yield, downtime) is often late or missing in ERP. MES fills the plan-execution gap with real-time capture and feedback.
3. Integration
- Orders: ERP → MES work orders
- Material: ERP stock / kitting → MES delivery
- Results: MES output/yield/labor → ERP cost & schedule
- Quality: MES results → ERP quality
4. Selection tips
- Clarify the pain point first
- Start with a single module (QMS or IoT)
- Focus on integration and industry templates
See Industry 4.0 · Products