Online simulation method and system based on webpage programmable controller

Abstract

The invention provides an online simulation method and system based on a webpage programmable logic controller. The online simulation system is operated in a webpage browser, and an appearance, control logic, an user interface and the like of a programmable logic device are simulated through a JavaScript scripting language, a html control and the like; a logic control procedure program is programmed by a user and is stored; a supply interface is debugged by procedure change operation parameters and input information provided and input by the user, which are input by the user, and an output state is simulated by sounds, images and texts; meanwhile, a communication channel which is connected with Internet and real equipment is established, and is used for carrying out real-time communication between the user and a third party in real time and seeking for the user to seek the help of the third party. Therefore, the user does not need the real equipment and installation software, and only needs to download the online simulation system from an appointed url on the browser, and simulation programming and debugging of the programmable logic controller can be carried out.

Description

technical field [0001] The invention relates to the computer field, in particular to an online simulation method and system of a programmable controller based on a web page. Background technique [0002] With the rapid development of microprocessor and computer technology, automatic control has gradually penetrated into almost all production fields. In this context, programmable logic controller (PLC) (hereinafter referred to as programmable controller) has been widely used; it is a simple computer dedicated to various types of machinery or production process control, which can be controlled by the user Customize the logic control program and store it in the internal memory, perform operations such as logic operation, sequence control, timing, counting, and arithmetic operations according to these programs, and control the frequency converter, stepper motor, water pump, water Valves, solenoid valves, cylinders, air pumps and other electrical equipment are controlled to real...

AI Technical Summary

Problems solved by technology

[0005] The current simulation system cannot take advantage of the characteristics of Internet interconnection and timely communication with third parties. It can only install special simulation software on a single computer for simulation, and cannot share the simulated system, program or circuit with others, and cannot directly Obtain the same or similar system, program or circuit as its application by downloading from the Internet, modify the results of others, and at the same time, it is difficult to interact with third parties such as equipment suppliers

[0006] Before purchasing a programmable controller, users can only learn about the functions and performance of the controller in detail by reading manuals and other materials or downloading special software for installation and simulation; however, the amount of information obtained through graphic materials is limited, and it is impossible to understand the controller deeply However, the process of downloading and installing software is extremely cumbersome and has great information security risks, which does not conform to the trend of e-commerce.

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