Högskolan i Skövde

Standards are, nowadays, a useful and sometimes essential tool, in the world of automated industry. Since the development of the standard IEC 61131-3, automation has made progresses in a consistent manner. This allows an engineer to develop control programs for any type of systems using the language set in the standard. However, this standard was not enough because it did not cover the control over distributed systems. Therefore, it was necessary to establish rules in this field. In order to fill this gap, the new standard IEC 61499 was developed. Its main objective is to describe how to develop, design and implement distributed control systems, using the new concept of function blocks. By the use of the new function blocks, it is possible to control distributed systems in a quick and easy way, adding some advantages such as reusability, portability, and much enhanced maintenance.This project involves the preparation of a manufacturing cell composed of a gantry robot interacting with a CNC machine. The project is developed in two sections; one is focused on the computer programming with function blocks for the gantry robot and HMI, and the other is prepared for the programming of function blocks for the CNC machine and HMI. The communications between PLC, PC, gantry robot and CNC machine are developed using the standard IEC 61499. This document covers the survey and research made for the first section of the project.The new standard IEC 61499 provides the methodologies and the appropriated tools to achieve a good control in distributed systems. The basic tools offered by this standard are the new function blocks which will be the main tool used in this project. Equally important, it is necessary to take into account the different assembly features and the machining features in order to design better function blocks to control the system. An HMI has to be developed in order to obtain a good interface for a worker of this cell.The aim of this project is to investigate how the new standard IEC 61499 works in a real manufacturing cell and how the new function blocks interact in a real distributed system. Moreover, it is important to see how the event flow works, controlling all the sequences required in the manufacturing cell.