Development Of Automatic Assemblly System Based On PROFIBUS Filed Bus

PROFIBUS is a Field bus which is most extensively used in workshop of factory automatic control. It can realize digital control and field communication network between field equipment and supervisory workshop. Consequently, it provides an available solution to realizing factory integrated automation and intelligent field devices.This dissertation has mainly developed and designed an Automatic Assembly System which is based on PROFIBUS Field bus and PLC. Functions of this system: First station: feeding automatically. Second station: color identification and automatic assembly. Third station: servo-positioning storage. (put qualified products into storage station.Automatic Assembly System is composed of feeding station, detecting of assembly station and servo-storing station. Each station is set up S7-300 PLC as its data acquisition and control system. It realizes the networking communication between master station and slave station through PROFIBUS-DP Field bus. At the same time, human machine interface(HMI) is used to monitor and display the malfunction of the process.What have been accomplished through the project are as follows:1,The scheme design of Automatic Assembly System, the design of overall framework and function of stations.2,The design of the pneumatic circuit of each station, and the simulate motion based on FLUID_SIM software.3,The design of every station's schematic of PLC.4,The selection of Siemens PLC, hardware configuration and software system of PLC.5,The overview of PROFIBUS and its network configuration.6,The design of the control procedures in Automatic Assembly System.7,The design and development of HMI in Automatic Assembly System.