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INTRODUCTION: 
 

MOD-RFID125

 is an RFID station, able to read Manchester-encoded 64-bit 

EM4102 tags with 64 periods of carrier frequency per data bit. All the 
complexity of  RFID tag detection, verification and decoding are handled by 

MOD-RFID125. After it strips the header and the checksums user is given 
the 40-bit ID of the transponder tag. 

 

MOD-RFID125 supports three distinctive modes of operation, easily 

switched by a single button press. It can emulate USB HID keyboard and 
input the read TAG ID directly to any Windows application, including the 
venerable Notepad. Or it can emulate USB CDC serial port for easy access 

from custom user applications using standard code for COM port access. 
The third option allows access from any standard 5V UART, allowing easy 

integration with existing microcontroller applications. 

 

FEATURES: 
 

-

 

Supports Manchester-encoded 64-bit EM4102 RFID tags with 64 
periods of carrier frequency per data bit; 

-

 

Base RFID frequency 125kHz; 

-

 

USB port connection to PC; 

-

 

Standard 5V UART 9600,8N1 connection to user microcontroller 

boards; 

-

 

Three modes of operation, easily changed by pressing the button; 

-

 

USB HID keyboard emulation mode; 

-

 

USB CDC serial port emulation mode; 

-

 

UART connection mode; 

-

 

Simple command-line interface in USB CDC and UART modes for 

configuration and data acquisition; 

-

 

Two LEDs indicating device status and tag presence; 

-

 

Support for continuous and periodic RF scanning to better suit user 

power requirements; 

-

 

Ships with default mode USB HID and default configuration: 
continuous read, scan always, one report per second, LEDs activated; 

 

 

ELECTROSTATIC WARNING: 

 

The MOD-RFID125 board is shipped in protective anti-static packaging. 

The board must not be subject to high electrostatic potentials. General 
practice for working with static sensitive devices should be applied when 
working with this board. 

 
REQUIREMENTS: 
 

Cables: 

1.8 meter USB A-B cable.  

 

Power:

 External 6-9V DC power supply (applicable only for MOD-RFID125-

BOX in UART mode). 

 
Software:  

Software needed for USB HID keyboard mode: 

-

 

Notepad or other text editor. 

Software needed for USB CDC and UART modes: 

Содержание MOD-RFID125

Страница 1: ...MOD RFID125 User Manual All boards produced by Olimex are ROHS compliant Rev A February 2008 Copyright c 2008 OLIMEX Ltd All rights reserved ...

Страница 2: ...D frequency 125kHz USB port connection to PC Standard 5V UART 9600 8N1 connection to user microcontroller boards Three modes of operation easily changed by pressing the button USB HID keyboard emulation mode USB CDC serial port emulation mode UART connection mode Simple command line interface in USB CDC and UART modes for configuration and data acquisition Two LEDs indicating device status and tag...

Страница 3: ... HyperTerminal or other terminal program ...

Страница 4: ... from USB MOD RFID125 BOX can be connected to external 6 9V DC power supply This can relief the USB hub power supply when device is in USB HID or USB CDC mode External power supply is mandatory for UART mode of operation POWER SUPPLY CABLE CONNECTION Pin Connect to 1 6 9V DC 2 GND UEXT pin Abbrev description 1 NC Not Connected 2 GND Ground 3 RXD UART Receive Data MOD RFID125 input 4 TXD UART Trans...

Страница 5: ... other meaning See the Firmware Upgrade section for more information PC DRIVER INSTALLATION Drivers for the USB HID mode are integrated in Windows XP Vista The driver for USB CDC mode is available from our website Windows installation steps are the following 1 Download and unzip the file MOD RFID125 drivers zip in a temporary directory 2 Plug the programmer in the USB port 3 Point the Device Wizar...

Страница 6: ......

Страница 7: ...ened text file There is no need for OS driver because all major operating systems include USB HID drivers NOTE This mode does not allow configuration of device parameters MOD RFID125 is shipped with default configuration for continuous read and one second repeat If this must be changed then device must be switched to USB CDC mode and configured using the serial command line interface USB CDC MODE ...

Страница 8: ...USB HID USB CDC blinks blinks USB CDC UART COMMAND LINE INTERFACE USB CDC and UART modes The command line interface available in USB CDC and UART modes allows device configuration and reading of successfully decoded TAG IDs Just open the serial port assigned to MOD RFID125 using HyperTerminal or similar terminal program and start typing commands For the impatient type and press enter to see a shor...

Страница 9: ...d on and the device is scans continuously for tags Otherwise if F is 1 5 the device will switch the antenna on F times per second If R is 0 then a successfully read RF tag ID is reported only once Otherwise if R is 1 9 the device will report the tag ID every R seconds until the tag is seen in the proximity Example continuous scanning single report per seen tag mc00 Example scan once per second sin...

Страница 10: ... in boot loader mode until it is power cycled Boot loader implements the standard protocol XMODEM with CRC16 for firmware update User is free to use his favorite terminal client HyperTerminal minicom etc to upload the firmware images taken from our website Boot loader uses an USB virtual serial port that is baudrate agnostic As an alternative we provide a simple Windows GUI application for users w...

Страница 11: ...er Supply Voltage 4 5 5 5 5 V Idle RF scanning not active 20 mA Continuous scanning 120 mA ICC NOLE D Power Supply Current with deactivated LEDs Scanning 2 times per second 36 mA Continuous scanning 130 mA ICC Power Supply Current with activated LEDs Scanning 2 times per second 40 mA ...

Страница 12: ...it no soldering required MOD RFID125 BOX assembled and tested no kit no soldering required How to order You can order to us directly or by any of our distributors Check our web www olimex com dev for more info Revision history REV A create April 2008 ...

Страница 13: ...y be adapted or reproduced in any material from except with the prior written permission of the copyright holder The product described in this document is subject to continuous development and improvements All particulars of the product and its use contained in this document are given by OLIMEX in good faith However all warranties implied or expressed including but not limited to implied warrantie...

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