1. ©Contrinex 2013 - JDC PPT_XF_RFID SystemOperation Functioning of RFID systems J.-D. Chatelain

2. Industrial fieldbus: PROFIBUS, DeviceNet, Ethernet/IP, TCP/IP,… Transponder Controller Interface Transponder: a passive electronic label with a memory which contains information RWM:Read/Write Module. Device which can read and write information in the transponder Interface:Device which links an industrial fieldbus to the RWM Controller:industrial PC or PLC Structure of an RFID system Read/Write Module

3. Industrial fieldbus: PROFIBUS, DeviceNet, Ethernet/IP, TCP/IP,… Phase 2 Phase 1 Preparing the command. Command ready Preparing the acknowledgment. Acknowledgment ready Preparing the command RP (Reply). Reply ready Preparing the data. Data ready Preparing the command Memorizing the command Preparing the acknowledgment Memorizing the acknowledgment Transmission of the command to the RWM Acknowledgment (RWM has understood the command) Execution of the command between RWM and transponder Reply RWM sends its data to the interface Preparing the command RP (Reply) Memorizing the command RP Preparing the data Memorizing data Ready for another command Structure and operating principle for low frequency (2-phase commands) Transponder Controller Interface Read/Write Module

4. Industrial fieldbus: PROFIBUS, DeviceNet, Ethernet/IP, TCP/IP,… Read/Write Module Controller Preparing the command. Command ready Preparing the result. Result ready Preparing the command Memorizing the command Executing the command Preparing the result Memorizing the result Ready for an other command Structure and operating principle for high frequency Interface Transponder

5. ©Contrinex 2013 - JDC PPT_XF_RFID SystemOperation Functioning of RFID systems J.-D. Chatelain End of this chapter