Modeling the Operation of the System in the CODESYS Software Environmentper

Abstract

Nowadays the world seeks to automate all branches of life. Automation plays a significant role in large-scale manufacturing, due to the large volume of production. Complex processes that have many controlled and testing parameters are difficult to implement by a team of workers. There is also a human factor that can disrupt the process. To solve this problem, programmable logical controllers (PLCs) were created that took on the role of a “brain” in a controlled system. The task of the controller is to evaluate all the factors of the system and to correct its operation to perform the given mode. So, all automation systems are built. Each process has its own peculiarities and mode. The PLC runs on the program loaded into it, which corresponds to the selected process. Correct writing of the program is one of the main tasks in the design of the system. The article discusses the programming environment of CoDeSys controllers, which makes it possible for any specialist, with the help of logical operations in a different view, to compile a program for any process. Writing the program is possible in any convenient format: in the language of relay contact circuits, in the graphical language of functional block charts, and also with the help of high-level diagrams describing the stages and conditions of the transitions in the contemporary computer programming language. In addition, the complex CoDeSys makes it possible for you to see the program in operation, using the visualization editor. Visualization is possible without connecting the PLC. In this article, an example of using the CoDeSys complex to develop a simulation program for the batching and blending process of a glass charge is considered. In the work, various ways of modeling the process are presented for a more illustrative demonstration of the system operation and debugging of the controller. When the flow chart of this process is constructed, a visualization of the process is carried out by means of a graphical display of the state of the equipment and subprocesses. The result of this work is the disclosure of the capabilities of the software complex CoDeSys for use by specialists in the field of automation of control systems for the management of technological processes and production in construction. The complex is associated with the development, commissioning, adjustment of the automated process control system. The application of this software complex in Russia has a tendency of steady growth. A program developed for a specific process in CoDeSys can be easily verified using graphical modeling and is available for adjustment directly in the process of operation, taking into account the process change. It is also advantageous that the CoDeSys complex with instruction for its use is freely available, which makes it possible to use freely this tool, adapt it to any technological process. The main thing is to understand what kind of tool it is and what opportunities it provides.