Elatec TWN4F7 RFID Reader User Manual Library

Elatec GmbH RFID Reader Library

user manual

Device for reading and writing RFID transponders TWN4 MultiTech 2 LF Manual Rev. 4
Elatec GmbH Page 2 of 8 1. Introduction The TWN4 MultiTech 2 LF is an integrated device for contactless read/write operations on a transponder, i.e. a transponder card. 2. Getting Started 2.1 Cable Connection In order to start operating a device for reading and writing RFID transponders, the TWN4 MultiTech 2 LF simply has to be connected to a host. 2.2 Power Up Once a TWN4 MultiTech 2 LF reader is connected to the host, it detects the type of communications cable (USB or RS232), with which it is connected to the host. Additionally, the RS232 is sending a version string via RS232 to the host. 2.3 Enumeration (USB Only) This is only applicable for the USB version: Once the device has been powered up, it is waiting for completion of the enumeration by the USB host. As long as the device is not enumerated, it is entering a minimum power consumption mode, where both LEDs are turned off.
Elatec GmbH Page 3 of 8 2.4 Initialization After powering up and enumeration (in USB mode), the device is turning on the built-in transponder reader logic. The green LED is turned on permanently. Some transponder reader modules need some kind of initialization, which is performed in this step. After successful initialization, the device sounds a short sequence, which consists of a lower tone followed by a higher tone. 2.5 Normal Operation As soon as the device has completed the initialization, it is entering normal operation. During normal operation the device is searching for a transponder continuously. Notice: For secure use a minimum distance of 2 cm to the reader is recommended. 注意! 依據低功率電波輻射性電機管理辦法 第十二條經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均 不得擅自變更頻率、加大功率或變更原設計之特性及功能。 第十四條低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干 擾現象時，應立即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依 電信規定作業之無線電信。低功率射頻電機須忍受合法通信或工業、科學及醫療 用電波輻射性電機設備之干擾。
Elatec GmbH Page 4 of 8 2.6 Detection of a Transponder If a transponder is detected by the reader, following actions are performed  Send the ID to the host. By default, the USB device sends by emulating keystrokes of a keyboard. A RS232 device sends the ASCII code of an ID.  Sound a beep  Turn off the green LED  Blink the red LED for two seconds  Turn on the green LED Within the two seconds timeout, where the red LED is blinking, the transponder, which just has been recognized will not be accepted again. This prevents the reader from sending identical IDs more than one time to the host. If during the two seconds timeout of the red LED a different transponder is detected, the complete sequence restarts immediately. 2.7 Suspend Mode (USB Only) The USB version of the transponder reader supports the USB suspend mode. If the USB host is signaling suspend via the USB bus, the transponder reader is turning off most of its power consuming peripherals. During this operation mode, no detection of transponders is possible and all LEDs are turned off. Once the host is resuming to normal operation mode, this is also signaled via the USB bus. Therefore, the transponder reader will resume to normal operation, too.
Elatec GmbH Page 5 of 8 3. List of Antennas
Elatec GmbH Page 6 of 8 4. Compliance statements FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution! The Federal Communications Commission (FCC) warns the users that changes or modifications to the unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC §15.105 (b): Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reason-able protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be deter-mined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: --Reorient or relocate the receiving antenna. --Increase the separation between the equipment and receiver. --Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. --Consult the dealer or an experienced radio/TV technician for help.
Elatec GmbH Page 7 of 8 Canada Compliance This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: 1) l’appareil ne doit pas produire de brouillage; 2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement. RF exposure statement (mobile and fixed devices) This device complies with the RF exposure requirements for mobile and fixed devices. However, the device shall be used in such a manner that the potential for human contact during normal operation is minimized.
Elatec GmbH Page 8 of 8 5. Service Address In case of any technical questions, please contact: Elatec GmbH Zeppelinstr. 1 82178 Puchheim Germany Phone: +49 (0) 89 5529961 0 Fax: +49 (0) 89 5529961 129 Email: info-rfid@elatec.com

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