International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 07 Issue: 07 | July 2020 www.irjet.net p-ISSN: 2395-0072 © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 2410 Study of Renesas Controller for the Development of PLC Chanchal P. Jadhav 1 , Dr. Rakesh G. Shrivastava 2 1 Student, Department of Electrical Engineering, MCOERC Nashik, SPPU, Pune 2 Professor, Department of Electrical Engineering, MCOERC Nashik, SPPU, Pune ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - Programmable Logic Controller i.e. PLC is a special computer in the term consists various programs and capable of controlling various functions in industrial productions. Like computers, PLC contains a hardware component which includes input and output modules, central processing unit or processor, co-processor modules, power supply and peripheral devices. PLCs are demanded to work flawlessly for years in industrial environments that are hazardous to the electronic components that modern PLCs are made from. PLCs must be robust and designed for immunity to electrical noise, resistance to vibration, impact, wide range of temperature ranges and moisture. A PLC is nothing but the hard real-time system. Output must be produced in response to the input conditions provided within a limited time. In this way, related equipment can implement various production tasks based on program design and instructions. In this paper, the study of hardware and software used for the development of PLC using Renesas controller is discussed. Key Words: Programmable logic controller, Renesas controller, Low cost, Low power consumption. 1. INTRODUCTION Automation is the key to innovation and has been hypothetically understood as a way to increase efficiency and to improve productivity. The process of machine following predefined sequence of operation with less or no human labor, using special equipment and control devices that perform and control manufacturing processes is known as automation. The benefit of automation includes labor savings, savings in electricity costs, savings in material costs, and improvements to quality, accuracy, and precision. In the past, automation is done through relays and contactor logics. Since the human interference was more, the scope of errors was also more. But with the invention of microprocessors & microcontrollers several new tools as PLCs (Programmable Logic controllers) came in to use. These have reduced human interference, which in turn has increased correctness, accuracy, precision and efficiency. [1] For example, PLC (Programmable Logic controller) can be used to automate the industrial fixture, to reduce the complexity of the process. A PLC based control system can be used to simulate the automation of an industrial fixture and analyzed it for safety. [2] PLC’s technical features when effectively combined with information technology are the key to promote the rapid development of electrical engineering automation. In current stage, electrical equipment has higher demand for calculation speed and information storage. The effective application of PLC technology can satisfy the operation demand of modern electrical engineering automation because R&D and application of PLC technology is closely related with people’s life and industrial production so that it has strong practicability. [3] PLCs are demanded to work perfectly for years in industrial environments that are hazardous to the electronic components that modern PLCs are made from. [4] The paper discusses about the manufacturing of the PLC using Renesas Controller. RL78 microcontrollers (MCUs) from Renesas Electronics are an advanced family of general-purpose and application-specific MCUs, combining true low power and high performance operation. This paper thus discusses the development of PLC using Renesas controller which would be in low cost with higher performance operation. 1.1 PROBLEM DEFINATION PLCs available nowadays in the market are having high initial cost, ladder logic programming which is hard to understand, high cost license software and requires more time when the failure occurs. Automation is the basic need in every industry to get efficient work within defined period of time. To have automated system, it is not always possible to buy the PLCs which are of higher cost. So, our aim is to develop the PLC using Renesas Controller which in other hand having low cost, no need of purchase the licensed software, can easily identify and fix the problem and it is based on Digital logic gates programming which is more easier than ladder logic programming. The basic aim of this