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Programmable logic controller bringing convenience to communication

A programming logic and controller technology, which is applied in the direction of program control and electrical program control in sequence/logic controllers, can solve problems such as inconvenient operation, increased production costs, and increased volume of the entire PLC, achieving low manufacturing costs, The effect of communication flexibility, repair or modification convenience

Inactive Publication Date: 2014-11-12
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the needs of different communication modes in commercially available PLCs, different communication ports need to be set separately, or completed by setting a separate communication module, which will not only increase the volume of the entire PLC, but also greatly increase its production cost
In addition, when using PLC for communication control, if you need to repair or modify PLC programs and parameters, the operation is also extremely inconvenient

Method used

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  • Programmable logic controller bringing convenience to communication
  • Programmable logic controller bringing convenience to communication

Examples

Experimental program
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Embodiment 1

[0020] In conjunction with the accompanying drawings, a programmable logic controller that facilitates communication in this embodiment includes a microprocessor MPU and a storage module, and also includes a mode changeover switch, a reset module, a communication switching module, a first data transmission module, and a second data transmission module. Transport module. The microprocessor MPU is respectively connected with the storage module, the mode conversion switch, the reset module and the communication switching module. The mode conversion switch is a single-pole double-throw switch, which is connected to a DC power supply and used to control the microprocessor MPU to select a communication mode (that is, communicate with an external communication module or communicate with an external programming and debugging module), and the The communication switching module receives the control signal sent by the microprocessor MPU, and completes the switching operation of the commu...

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Abstract

The invention discloses a programmable logic controller bringing convenience to communication and belongs to the technical field of electronic communication. The programmable logic controller comprises a microprocessor MPU, a storage module, a mode conversion switch, a reset module, a communication switching module, a first data transmission module and a second data transmission module. The storage module, the mode conversion switch, the reset module and the communication switching module are respectively connected with the microprocessor MCU. The mode conversion switch controls the microprocessor MPU to select a communication mode. The communication switching module completes switching operation of the communication mode. The first data transmission module is arranged between the microprocessor MPU and an external communication module. The second data transmission module is arranged between the microprocessor MPU and an external program and a debugging module and is used for transmitting data. The programmable logic controller (PLC) is reduced in manufacture cost and shrunk in size and brings convenience to operation in the communication process.

Description

technical field [0001] The present invention relates to a programmable logic controller (PLC), and more particularly, to a programmable logic controller that facilitates communication. Background technique [0002] Programmable Logic Controller (PLC) is a general-purpose industrial automatic control device developed with a microprocessor as the core and integrated computer technology, automatic control technology and communication technology. The PLC programming language is simple and easy to learn, the system design cycle is short, the anti-interference ability is strong, the reliability is high, the adaptability to the production process change is strong, the installation is simple, and the maintenance is convenient. It is the main means and important basic equipment of industrial control. [0003] PLC performs logical operations and sequential control, and controls various types of machinery or production processes through digital or analog input / output, such as switch lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
Inventor 王守谦李晓辉
Owner ANHUI UNIVERSITY