Data acquisition is the basis of business and statistical analysis of MES system. In the application of MES system software, different data acquisition methods should be adopted, different data acquisition equipment should be selected, and different data acquisition methods should be adopted according to different data, application scenarios, personnel capacity, equipment investment and other factors.
1, data that must be entered.
The data that must be input refers to the data that the system must obtain directly from the outside. By standardizing the basic definition function and the basic definition function of data processing, the system can completely establish its own data acquisition project database.
2. Data automatically generated by the system
In the production process, the system can automatically collect some data triggered by events in the production process, mainly including: the start time of the production process, the end time of the production, the equipment status and so on. After these data are triggered by time, the system will automatically collect them according to the original basic data set.
3. Bar code collection
One of the most common ways to collect production data is to use bar codes. The premise of bar code data acquisition is that information can be expressed by code, and the corresponding relationship between code and preset data can also be established. Barcode can improve the accuracy of data input, improve the input speed and reduce the cost. Therefore, the data should be classified, coded and converted into bar codes as much as possible to facilitate field data acquisition.
4. Methods of collecting equipment data
If enterprises need to control and monitor the operation of equipment and facilities, they can adopt the following modes: DNC network adapter mode, macro instruction mode and PLC acquisition mode, and some data can be collected through bar code. The key is to choose different methods if there are enterprise needs and demands.