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Method for designing ladder diagram editing software of embedded PLC (Programmable Logic Controller)

A technology of programming controller and software design, used in programming control devices, instruments, computing, etc.

Inactive Publication Date: 2012-06-20
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overall design of the embedded programmable controller is still in the preliminary stage, and needs to be further improved in terms of theoretical research and engineering application.

Method used

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  • Method for designing ladder diagram editing software of embedded PLC (Programmable Logic Controller)
  • Method for designing ladder diagram editing software of embedded PLC (Programmable Logic Controller)
  • Method for designing ladder diagram editing software of embedded PLC (Programmable Logic Controller)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] Program main interface

[0050] The main interface is mainly composed of title bar, menu bar, tool bar, status bar, ladder diagram drawing area, instruction code / error display area and other parts.

[0051] 1. The title bar is used to display the name of the software being used and the name of the file being edited.

[0052] 2. The menu bar contains options for all available software functions. Such as file processing (including new, open, close, save, save as, properties and exit, etc.), editing (including cutting, pasting and copying), searching, etc.

[0053] 3. The tool bar is usually used to place the software function options that need to be used frequently. Including common editing functions, common ladder diagram components and connecting lines, and program running functions, etc.

[0054] 4. The ladder diagram drawing area is used t...

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PUM

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Abstract

The invention provides a method for designing ladder diagram editing software of an embedded PLC (Programmable Logic Controller) and provides a method for establishing a binary tree by scanning a ladder diagram according to the direction of an 'energy flow' in the ladder diagram. According to the invention, the binary tree is taken as a center so that the conversion between the ladder diagram form and instruction list form of a user control program of the PLC is realized; and by utilizing a method for converting an instruction language into the binary tree, the mutual conversion between the ladder diagram which takes the binary tree as the center and an instruction list is finished. And finally, one editor of the embedded PLC is developed by applying VC++6.0 under a Windows platform; and the editor has the functions of realizing the drawing of the ladder diagram, and the mutual conversion between a ladder diagram language and an instruction list language and the like.

Description

technical field [0001] The invention specifically relates to a design method for ladder diagram editing software of an embedded programmable controller, which belongs to the field of control systems and electronic technologies. Background technique [0002] For a long time, PLC has always been the main battlefield in the field of industrial control automation, providing very reliable control solutions for various automation control equipment. With the development of industry, the application of programmable controllers in industrial control is becoming more and more extensive, and the requirements for programmable controllers are getting higher and higher, so the development of new programmable controllers is the future development trend. [0003] At present, most of the PLCs used in my country come from Japan and some European and American countries. Foreign PLCs are mainly monopolized by Siemens, A-B, Schneider, Mitsubishi, and Omron. The core technology of PLC has been ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44G06F17/50
Inventor 朱志宇常艳超张冰刘维亭秦冲魏海峰赵强袁文华
Owner JIANGSU UNIV OF SCI & TECH
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