SYNTHESIS AND SIMULATION OF COMBINATION CIRCUITS THROUGH THE BASIC FUNCTIONS OF A PROGRAMMABLE LOGIC CONTROLER

Abstract

The purpose of this article is to assist and enrich the laboratory and teaching practice in technical and vocational education with preliminary information, examples and solved tasks. The advantages of electronic modeling, which is designed to facilitate the ever-expanding electronization of the learning process, are explained. The synthesis of combinatoric summers is a task related to the methodology of practical study of digital and logic circuits through a programmable logic controller. The schematic examples are intended for students, students, teachers - specialists and lecturers in all technical specialties of vocational high schools, colleges and universities. Examples are presented illustrating the advantages of electronic modeling in research and design, the possible application of software products for electronics in the automation of engineering work and in non-electrical subjects such as electrical engineering, electrical equipment, mechatronics and others. The programmable logic controller"LOGO" from Siemens is easily portable, simplified enough to study the programming with it and, moreover, the virtual simulation of the circuits can be monitored at every stage of their operation. The teaching practice shows that the combination of LOGO's PLC programming environment and the study of the synthesis of combinational aggregators in this environment gives the fastest and highest results in the learning process, especially in non-electronic specialties. The method can also be successfully applied in design practice. The Siemens LOGO module is highly functional and easy to operate. It runs and runs on Windows, Linux, MacOSX. Programs can be tested, recorded, printed and archived independently of the controller. LOGO on a modular principle is easily portable, needs fewer accessories and can be expanded as needed. Other advantages include simple installation and easy programming. The LOGO controller remembers the program permanently, it is not erased when the power is turned off. The program remains stored until it is deleted with the corresponding command. The program part can be used for computer simulations of synthesized circuits and without the physical presence of the controller.The best result compared to other simulators is obtained with the CEEMS controller due to its main advantages of visualizing the work environment. The simplicity of installation and uninstall, the poor computer requirements, the ability to monitor and record all the simulation variants and the individual windows are discussed in this material.