1. What is MES?
1. Concept:
MES (English full name: Manufacturing Execution System) manufacturing execution system is a management system for workshop production.
2. Definition:
The definition of MES in the industry is: in the process of the product from the work order to the finished product, the manufacturing execution system plays the role of transmitting information to optimize production activities.
3. Function:
In the production process, with the help of real-time and accurate information, MES guides, initiates, responds, and reports production activities. Respond quickly to deal with changes, reduce non-value-added production activities, and improve operational and process efficiency. MES improves return on investment, net profit level, improves cash flow and inventory turnover speed, and ensures on-time delivery. MES ensures the two-way flow of mission-critical information of production activities within the entire enterprise and between suppliers.
Generally speaking, MES functional components include: resource management, process management, unit management, production tracking, performance analysis, document management, human resource management, equipment maintenance management, process management, quality management and data acquisition.
MES is a workshop-oriented management information system located between the upper plan management system and the bottom industrial control. It provides operators and managers with plan execution, tracking, and current status information of all resources (people, equipment, materials, customer requirements, etc.).
4. Effect analysis
5. MES and other system integration planning
When the informatization degree of the manufacturing enterprise reaches a certain level, ERP provides enterprise resources to APS, and collects data from APS to form statistical reports, uses APS advanced scheduling plan to formulate the enterprise's production scheduling plan, and pushes it to MES, MES from PDM Take the BOM file for analysis, use the resource data provided by ERP, according to the production and manufacturing plan, and at the same time WMS provide material data, transfer process data and operation instructions to PLC through DNC, and then control equipment to execute production, MDC collects equipment data through PLC And the production data are sent to the MES, and the quality control and inspection of each link in the production cycle is carried out by the QMS during the production process, as well as the quality traceability of the unqualified products.
After the production process is completed, the MES pushes the production data to the ERP to form a product information report; and pushes the product information to the MWS to realize the storage, delivery and logistics distribution of the product.
6. MES functional architecture
Image source: Weaving letter low code
7. Technical Architecture
Image source: Weaving letter low code
8. Business process
The figure below is a standard business flow chart. After receiving data from PDM, process division is carried out, and then BOM is constructed. The BOM is sent to MES for decomposition to form an MRP algorithm. Then ERP is pushed to the warehouse for material-related management.
MES plans and schedules production according to the process BOM, does a good job in production scheduling, manages the production operations of the production workshop, uses production process data in the production process, and forms a production efficiency analysis table to monitor the entire production process.
2. Functional modules of MES system
Take the automotive industry MES system as an example. Usually the system modules involved in this field are:
1. Advanced scheduling
For example, the manufacturing of auto parts and accessories is based on order scheduling and flexible production. The reason is that there are many types of auto parts, order specifications, quantities, and delivery dates vary greatly. The particularity of product orders determines the flexibility of production. Therefore, enterprises must Order organization production. Traditional manual production scheduling has a large workload and requires high personnel capabilities. The lean production scheduling APS system can automatically schedule orders according to production needs, greatly reducing its workload.
2. Real-time on-site monitoring
The manufacturing process of auto parts is complicated, and the product quality requirements are high. Through scientific scheduling and real-time monitoring, the mes system can effectively manage the workshop site such as shift change, waste collection, production machine allocation, and machine pick-up and return, so as to achieve precise management.
3. Material management
Material management is the core part of parts production management. The material management of parts MES includes five aspects: batch management, formula management, material pulling, electronic picking and delivery management. Whole process management.
4. Quality management
Realize the quality management of parts, including the quality of parts received, the quality of parts in manufacture, the traceability of safety parts, the management of inspection safety information, and the functions of corresponding data analysis, statistics and report generation.
5. Equipment management
MES system software equipment management consists of equipment account, equipment management personnel, spare parts, maintenance plan, daily maintenance, emergency repair, equipment maintenance personnel assessment, equipment status alarm, etc. So as to ensure the production capacity and product quality of the factory, and improve the competitiveness of the enterprise.
6. Cost management
Weaving letter's low-code customized MES manufacturing execution system is mainly based on data collection, collecting, sorting, analyzing, storing and reporting materials, energy consumption, equipment running time, and employee working hours in the production process, so as to control the production cost of the enterprise. Manage and control.
