VT107 technical documentation

This document is valid for device with firmware version 5.0 and higher

1. Introduction

VT107 is RFID reader operating on the principle of contactless reading data from Unique transponder (EM MICROELECTRONIC MARIN SA - P4150). Unique transponder has a unique 40-bit identification number stored permanently (the number is unique to each transponder). The reader sends this number using 1-wire bus in a format compatible with the Dallas DS1990.

2. Specifications

VT107 / RFID reader
Supply voltage

7...25V

Supply current30...55 mA
Operating frequency built-in antenna125 kHz
The speed of reading data from the transponderRF/64 (1953b/s)
Supply voltage LED red0…14V
HS Code8471 90 000
Max. range readings15 cm (MAX.)
Antenna

Built-in device (DALLAS DS.1990)

RS232 TTL

Interfaces1-Wire
Dimensions82 x 82 x 22 mm
The distance between the retaining pins42 mm
Voltage failure reader+/- 30 V

3. Pinout

FrontBack

Description

# on reader
Description
1

VCC ( + )

2

GND ( – )

31-WIRE / RS232 TX
4Input Power LED red LED’a / RS232 TX
5Red LED
6Green LED (indicates power)
7Button (it includes a bus 1-Wire to ground)

4.2 RS232 TTL

4.1 1-WIRE

1-WIRE interface is used to transmit read the ID of the applied transponder. The device supports the command READ_ROM and SEARCH_ROM.


4.2 RS232 TTL

Interface RS232 TTL is used to configure the device. Transmission parameters are shown in the table below:

RS232-TTL
Interface typeSerial RS232 (voltage levels 0..5V)
Baudrate9600bps
Parity bitNo
Number of data bits8
Number of stop bits1

The data is exchanged in the protocol NETRONIX. Protocol description is available at:
http://www.netronix.pl/

5. Configuration

5.1 Factory configuration

Parameter

Default

value

Description
FamilyCode0x01Family code (1 byte emulated ID)
DeviceAdr0x00The device address (7 byte emulated ID)
Hold time ID0x05

The time that your device will remember to read

the ID and send it to the 1-Wire bus.

Time [s] = 0.1 * SetValue

Priority service 1-Wire

bus

0x00

Value:

0x00 – the process of reading tags and process

support 1-WIRE bus have the same priority.

0x01 – process supports 1-Wire bus has a higher

priority than the process of reading tags.

5.2 Reading the software version

To read software version, send following data frame to device:

Where:

  • Length – length of data frame in bytes
  • Command – code of C_FirmwareVersion command

Device should respond by sending following data frame:

Where:

  • Length – length of data frame in bytes
  • Command+1 – code of command performed increased by 1
  • Data[ ] – sequence of ASCII characters describing software version
  • OpCode – operation code

5.3 Reading the configuration

To read the configuration memory, send following data frame to device:

Where:

  • Length – length of data frame in bytes
  • Command – code of C_GetConfig comman.

Device should respond by sending following data frame:

Where:

  • Length – length of data frame in bytes
  • Command+1 – code of command performed increased by 1
  • Data[0] – FamilyCode
  • Data[1] – DeviceAdr
  • Data[2] – Hold time ID (x 100ms)
  • Data[3] – Priority service 1-WIRE
  • OpCode – operation code

5.3 Saving the configuration

To save the new configuration to memory, send following data frame to device:

Where:

  • Length – length of data frame in bytes
  • Command – kod rozkazu C_SetConfig.
  • Data[0] – FamilyCode
  • Data[1] – DeviceAdr
  • Data[2] – Hold time ID (x 100ms)
  • Data[3] – Priority service 1-WIRE

Device should respond by sending following data frame:

Where:

  • Length – length of data frame in bytes
  • Command+1 – code of command performed increased by 1
  • OpCode – operation code

6. BOOTLOADER - updating the firmware version

To update the modem firmware version:

1. Connect a device in which firmware we are to update to serial interface of computer.

2. Run program NEFIR.exe.

3. Set the speed of the interface at 9600bps and address 0x01

4. Press the button "Open HEX file ..." and select the file (* .nhex) containing firmware that you want to load into the device.

5. Press the START button. If reloading does not start automatically, put the device into operation BOOTLOADER by resetting the device.

Picture 6.1. Program window while reloading firmware

Appendix A: Command and operation codes

Operation codes are listed in the table below:

OperationCommand codeDescryption
C_FirmwareVersion0xFEReading the software version
C_SetConfig0x08Saving the configuration
C_GetConfig0x0AReading the configuration


Response codes are listed in the table below:

ResponseResponse codeDescription
OC_Successful0xFFCommand performed successfully
OC_Error0xE0Error