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This paper is a feasibility study on the factorytobusiness (F2B) practice with a programmable logic controller (PLC), a PDA and a PCbased platform for a driller. A PDA is a handheld human machine interface (HMI) which operates on a pact flash Ethernet card and embedded VB program while a host PC connected to the PLC and AP (access point) station that conforms to IEEE . Experimental results show that the PDA and PCbased platforms are able to control and monitor a PLC controlled manufacturing system promptly for a F2B practice.Keywords：Efactory。 Emanufacturing。 Factory automation. 1 introductionIn the late 20th century, emerce and business via the Internet has produced a new wave of merce, which is monly called mobile merce (mmerce). Mmerce has been defined as any transaction with a monetary value, either direct or indirect, that is conducted over a wireless telemunication network [1]. With the maturation of mobile technology, such as cellular phones and PDAs, Mmerce promises to inject considerable change into the way in which mercial activities are conducted. With the growing penetration of wireless device usage and the widespread adoption of Internet, people are looking for ways to access data wherever and whenever they want. Forrester Research [2, 3] estimated that revenues of mmerce would reach $ trillion by 2004. The advent and popularity of mobile phone and PDA is changing the dominant marketplace once again. Currently, most of PDA applications are reported with success in the fields of service business, such as banking, booking, ticket purchasing, shopping, realtime news, and download/upload data from database of server. PDAs have been used to increase both the efficiency of business and quality of customer service. Generally speaking, the advantages for business using mobile devices are two folds. Mobile device enhances the efficiency of munications between employees, customers, and suppliers. Mobile devices also provide more real time usage of data flexibly. It motivates the research of mobile application for industrial use. In sum, the adoption of mobile applications has altered the nature of change within the manufacturing environment. Factorytobusiness (F2B) has bee a hotly discussed issue recently [4]. Facing the trend of F2B, this issue revolves around a number of critical questions: “What can a PDA do in our factory? How does the mobile device connect to the existing equipment? How much will it cost?” In order to establish a mobile manufacturing environment for F2B, in this project, we developed a PDA and PCbased platform to manipulate a PLCcontrolled drill machine. The PDA acts as portable HMI by inserting a pact flash Ethernet card and Embedded VB (EVB) program interface. A notebook PC connected to the PLC and AP station, which conforms to IEEE , acts as a host. Experimental results show that the PDA and PCbased platform can control and monitor PLCcontrolled driller promptly. The paper is organized as follows: Sect. 2 reviews the mobile munication technologies. Section 3 describes the related hardware and software for mobile applications. Section 4 shows the system configuration and software development. Section 5 presents the results and discussion. Section 6 ends with conclusions and future work of this study.2 Mobile technologyTypically there are several technologies available for mmerce applications, such as Bluetooth, IEEE , GPS (Global Positioning System) and AGPS (Assisted Global Positioning System). A brief summary is given as follows: [5–9]? Bluetooth is a lowpower radio technology, with a throughput of about 1Mbit/s, designed to replace cables and infrared links for distances up to 10 m. This allows local interaction between devices and the separation of wired ponents. Bluetoothenabled mobile phones became available in 2001. ? IEEE is a low power technology standard similar to Bluetooth. It is suitable for applications aimed at replacing cables and infrared links to enable device interactivity, particularly local area networks. ? GPS is based on satellite technology and was originally developed by the US military, but has been available for general use from the early 1990s. However, the US Army has only recently derestricted outdoor positioning to a sufficiently high resolution for advanced use, currently 10–20 m. But GPS cannot be used in area of poor signal reception such as inside buildings.? AGPS bines GPS with a mobile telemunications network and is therefore able to get positioning within 50 m indoors and in other areas with poor satellite signal reception. In this project, an AP of IEEE was chosen because the IEEE is suitable for longer distance transmission in faster transmission speed than Bluetooth. Besides, the IEEE is more inexpensive hardware cost than GPS system, without any data transmission fee.3 Mobile facilitiesGenerally, the major devices used for mobile applications are cellular phones and PDAs. However, given its monitor, memory, and operation system (OS) limitation, cellular pho