Programmable logic controller connection method and device, terminal equipment and storage medium

Abstract

The invention discloses a programmable logic controller connection method and device, terminal equipment and a storage medium, and belongs to the field of industrial control. The method comprises the following steps: receiving a virtual identification code and a product serial number sent by a slave module; binding the virtual identification code with a product serial number; the bound virtual identification code and the product serial number are sent to the slave module for comparison of the product serial number; and receiving a write-in success mark returned by the slave module after successful comparison so as to establish software communication with the slave module. According to the connection method of the programmable logic controller provided by the invention, the virtual identification code of the slave module is bound and compared with the product serial number, so that the module identification ID of the programmable logic controller is changed from the connection based on a hardware ID and a physical interface to the identification and interconnection communication based on software, the reliable connection is ensured, and the reliability of the programmable logic controller is improved. And the product hardware cost is effectively reduced.

Description

technical field [0001] The present application relates to the field of industrial control, and in particular, to a connection method, device, terminal device and storage medium of a programmable logic controller. Background technique [0002] The essence of PLC (Programmable Logic Controller) is a programmable memory that controls various types of mechanical equipment or production processes through digital or analog input and output, and is widely used in industrial control and automation. control, etc. Due to the lack of PLC's own interface, it is often necessary to use expansion modules. Most of the current PLCs are designed in the form of multi-module connection. Therefore, it is very meaningful to study the connection method of PLC. [0003] The more common PLC connection method is to identify the master module and the slave module by sampling the hardware ID (Identity Document, identification code). -Output, input and output) to identify. However, the cost of indust...

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Problems solved by technology

[0005] The main purpose of this application is to provide a programmable logic controller connection method, device, terminal equipment and storage medium, aiming to solve the problem of high hardware cost in the current programmable logic controller connection scheme

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