Industrial equipment remote control method and device based on PLC

Abstract

The invention discloses an industrial equipment remote control method and device based on a PLC, and the method comprises the steps: each PLC receives the operation data of corresponding industrial equipment, and transmits the data to a remote server; an industrial equipment control program running in the remote server calculates the received data, outputs an industrial equipment control instruction and sends the industrial equipment control instruction to the corresponding PLC; and each PLC outputs the received control instruction to the corresponding industrial equipment to execute the corresponding equipment control action. According to the invention, the industrial equipment control program traditionally burnt on the PLC controller is migrated to the remote server, the control of the industrial equipment does not depend on the computing power of the PLC controller any more, and the situation that the equipment use cost of an enterprise is increased due to the fact that the computing power of the PLC controller is insufficient and hardware upgrading is needed is avoided. Most importantly, the upgrading of the equipment control program only needs to be carried out on the remote server and does not need to be carried out on site one by one, so that the operation and maintenance cost of the equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of remote control of industrial equipment, in particular to a PLC-based remote control method and device for industrial equipment. Background technique [0002] Programmable logic device (hereinafter referred to as "PLC") is a commonly used device for automatic control of industrial equipment. According to the actual industrial equipment control requirements, the manufacturer burns the control program in the PLC controller to realize the automatic control of the industrial equipment. However, there are the following technical problems in the method of automatically controlling the operation of the equipment by burning the control program in the PLC controller at present: [0003] 1. There are many manufacturers of PLC controllers, and the programming languages ​​used by different brands and types of PLC controllers may be different. It is difficult for program developers to master various PLC programming la...

AI Technical Summary

Problems solved by technology

[0003] 1. There are many manufacturers of PLC controllers, and the programming languages ​​used by different brands and types of PLC controllers may be different. It is difficult for program developers to master various PLC programming languages. Equipment manufacturers need to recruit and be familiar with various PLC programming languages. Developers of PLC programming language increase the cost of employment

[0004] 2. The upgrade and modification of industrial equipment control programs require operation and maintenance personnel to go to the site

However, mass-produced industrial equipment is generally sold to a relatively scattered customer base. When it is necessary to upgrade the equipment control program, operation and maintenance personnel need to come to the door one by one to provide service. The equipment operation and maintenance costs are high, and the timeliness of operation and maintenance cannot be guaranteed.

[0005] 3. The computing power of the PLC controller is limited. When the computing power required by the control program exceeds the computing power of the PLC controller, it is necessary to upgrade the hardware of the PLC controller (such as replacing the PLC controller with stronger computing power) , increasing the equipment cost of the enterprise

[0006] 4. Most of the existing PLC programming languages ​​are low-level languages, and because the memory space of the PLC controller is limited, the number of statements of the control program burned in the PLC controller is limited, and the complicated equipment control process is not easy to realize

[0007] 5. The PLC controller in industrial equipment is specially designed and produced for industrial equipment. It has limited data access capabilities to existing ERP or MES systems and cannot support database languages ​​such as SQL. Therefore, the existing PLC controllers are based on industrial equipment requirements. The mode of burning equipment control programs in the controller to control industrial equipment has become the biggest obstacle to industrial automation, digitization, and big data

Images