PLC programming method used in material carrying among grid arrays

Abstract

The invention discloses a PLC programming method used in material carrying among grid arrays, wherein by separating programs and data structures required by a material carrying movement among the grid arrays, planning for a user's customized flexible carrying route of materials among the grid arrays is realized by a source grid data table, a target grid data table and a carrying movement order list, and the source and target grid data tables and the carrying movement order list are compiled and generated by a man-computer interactive graphic interface. In comparison with a traditional method that a PLC code is compiled for each grid combination to realize the route planning for the material carrying among grids, the method provided by the invention is characterized in that a PLC storage capacity occupied by addition of each grid combination is small, an PLC can support the much more grid combinations, operations for combination increase are simple and rapid, requirements put forward by industrial 4.0 large-scale customized production for production line changing can be satisfied, and requirements for skills of staffs in charge of equipment utilization and maintenance are reduced.

Description

Technical field: [0001] The invention belongs to the technical field of industrial automation, and in particular relates to a PLC program design method for transferring materials between grid arrays. Background technique: [0002] In the process of automatic transformation of the production line, the material handling of grid array state arrangement is an important link, which widely exists in the process of product processing, testing and storage and transportation, such as in the process of circuit board production, matrix splicing After the circuit board is cut, it needs to be loaded into the TRAY tray of the matrix cavity. Depending on the products produced, the arrangement of the source grid array at the origin of material handling and the arrangement of the destination grid array at the destination of material handling will change. Therefore, the path planning of material handling needs to be able to adapt to this change. [0003] Programmable logic controller (PLC) i...

AI Technical Summary

Problems solved by technology

When the above-mentioned traditional PLC programming method is used to realize the data transfer of materials between grids, the path planning of the transfer and the transfer action code are integrated, which means that each time a combination of grids is added, a section must be written. PLC code, the disadvantages of this approach are: 1) The requirements for equipment users are relatively high, and engineers with PLC programming skills are required to write and debug specific PLC codes for a certain grid combination, and it will take considerable time to improve cost of equipment usage

2) The proprietary codes of each grid combination occupy a relatively large amount of storage space in the PLC. If there are many grid structures, it is easy to cause the PLC storage space to be full.

[0004] There are not many types of products produced on the production line, and the grid array combination is not too proficient, the traditional PLC programming method can meet the requirements, but Industry 4.0 requires a highly flexible and customized manufacturing process. Online, there will be many changes in product types, and the production switching time of different products is required to be very short. Therefore, it is required that the planned material handling path switching should meet this requirement. First, users should easily add new handling path planning, The second is that the switching time between different path plans requires fast

Due to the above two problems, the traditional PLC program programming method cannot meet the needs of mass customization manufacturing

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