Abstract—This paper proposes the requirements and design of RFID based system for SFC (Shop Floor Control) in order to achieve the factory real time controllability, Allowing to develop E- Manufacturing System. The detailed logical specifications of the core functions and the design diagrams of RFID based system are developed. Then RFID deployment in E-Manufacturing systems is investigated.. Keywords—RFID, E-Manufacturing System, Requirements specifications, Design Diagrams, real time controllability. I. INTRODUCTION -Manufacturing control is a concept to combine the power of the new Web-based software technologies (SOA, Web Services, ….. etc) and the state-of-the-art. Radio Frequency Identification (RFID) technology to improve the controllability of a factory [ 1-8 ]. The controllability of a factory is highly dependent on the capability of the enterprise system to interact in real time with the data points. A data point is the place where a specific type of data needs to be read or a control data signal needs to be injected (such as identifying the position of material in the manufacturing pipe line, or changing the light indicator of a work center, etc.). Inserting programmable RFID tags at the data-points will enable the real-time controllability. On the other hand integrating the RFID network with ERP systems requires flexible design and development to secure future sustainability and ease of deployment like web–based software technology which offers a sustainable and resilient candidate to implement this integration. A main challenge is to integrate RFID into existing manufacturing systems and to develop RFID middleware, and associated hardware and networking that will link new RFID systems into back-end infrastructure [ 9-17 ]. This paper proposes the requirements and design of RFID based system for SFC (Shop Floor Control) in order to achieve the factory real time controllability, The detailed logical specifications of the core functions and the design diagrams of RFID based system are developed. Then RFID deployment in E-Manufacturing systems is investigated. Gamal Darwish is Professor and Dean, Faculty of computer Science and Information Technology, Ahram Canadian University – Egypt (e-mail: gdarwish@mcit.gov.eg ) Ahmed Elshafee is assistant professor , Faculty of computer Science and Information Technology, Ahram Canadian University – Egypt ( e-mail : aelshafee@ieee.org ) Dina Darwish is Assistant professor, International Academy for Engineering and Media Science–Egypt( e-mail: dan_123_dona@yahoo.com ). II. STRUCTURE OF SFC (SHOP FLOOR CONTROL) Fig. 1 shows the structure of the SFC. Fig. 1 The SFC logical structure The structure has two main components [18-21] : 1. The functional content, which will be implemented as software residing on the SFC server 2. The technology content: Reconfigurable Web services Interface to the ERP; Standard RFID Intelligent Addressing and Data Collection System. Such structure takes into consideration the following important priorities: 1. The core items: orders and work centers management, assets maintenance, tooling management, Finished and semi- finished Inventory, Reconfigurable Web services Interface to the ERP, Automated RFID data collection 2. Secondary items: Actual product quality management, Labor management 3. Future upgradability items: Supplier interface, Customer interface. Both are related to the evolution speed of the e- Business and the Supply-Change-Management on the internet An important concept in the requirement, is that any integration software will be outside the original target functions to be integrated. This is known as business process management/integration. The integration software will reside on the SFC server as an Integration-Hub, as shown in fig. (2). III. REQUIREMENTS OF RFID DEPLOYMENT IN E- MANUFACTURING SYSTEM A. Introduction E-manufacturing system combines the power of the new Web-based software technologies (SOA, Web Services, ……. etc.) and the state-of-the-art Radio Frequency Identification (RFID) technology, which offer a unique opportunity to build Gamal Darwish, Ahmed ElShafee, Dina Darwish Requirements and Design of RFID based E- Manufacturing System E World Academy of Science, Engineering and Technology 59 2011 247