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this device not support any H I D Card/tag, This card reader only supports RS232 output, and USB is only a power supply interface
it's a 125Khz RFID smart
card reader with a standard serial port, reader distance up to 80mm, it's not
only simple aspect, but also stable and reliable data. Widely used for RFID
Radio Frequency Identification system and project, Such as Automated parking
management system, Personal identification, Access controller, Production Access
control, etc
Ⅰ
Technical Parameters
| Item | Parameters |
| Model | R21D(LF-ID Reader) |
| Frequency | 125Khz |
| Support cards | Em4100,TK4100,SMC4001 and compatible card |
| Output format | 10 digit dec(Defoult
output format) (Allow user to customize the output format) |
| Size | 104mm×68mm×10mm |
| Colour | Black |
| Interface | RS232 |
| Power Supply | DC 5V |
| Operating Distance | 0mm-100mm(related to the card & the environment) |
| Service Temperature | -10° ~ +70° |
| Store Temperature | -20° ~ +80° |
| Working humidity | <90% |
| Read time | <200ms |
| Read interval | ＜0.5S |
| Weight | About 155G |
| Cable length | 1450mm |
| Material of reader | ABS |
| Operating System | Win XPWin CEWin 7Win 10LIUNXVistaAndroid |
| Indicators | Double Color LED (Red
& Green) and Buzzer (“Red” means standby, “Green” means reader success) |
Ⅱ Instructions for
use
Method of
installation and use
1. Connect with computer through a
serial cable directly. When the buzzer sounded, reader into the self-inspection.
And the same time, LED turn into red means standby.
2. Open the output of computer
software,such as Serial debugging assistant.
3. Put tag on the top of reader, the
software will output a data(card number) of the tag. When reading the tag, LED
light change from red to green.
Detecting device is
connected
Open the Device Manager of computer, If appears Device and “COM” port is OK that means Reader has successfully into computer.
Ⅲ Communication
Format
RS232
Communication
9600
bps, none parity, 8 data bits, 1 stop bit
Data Format
| STX | Length | CardType | SNR [0..N] | BCC | ETX |
The following table describes the packet fields
| Field | Length | Description |
| STX | 1 | 0x02, the starting of a data packet. |
| Length | 1 | Length of the data bytes in the packet (except STX). |
| CardType | 1 | 0x01: ; 0x02: EM4100 |
| SNR [0..N] | 5 | SNR[0]:batch number, SNR[1..4]:serial numbers |
| BCC | 1 | BCC = Length xor CardType xor SNR[0..N] |
| STX | 1 | 0x03, the ending of a data packet. |
Example: 02 0A 02 06 00 8E
6D 5D B0 03
STX: 02
Length: 0A, 9 bytes
CardType: 02, EM
SNR: 06 00 8E 6D 5D, 06 = batch
number, 00 8E 6D 5D = 0009334109 (DEC)
BCC: B0, B0 = 0A xor 02 xor 06 xor
00 xor 8E xor 6D xor 5D
EXT: 03
Ⅳ Precautions
1. Do not install the reader on the
magnetic objects and metal objects, they will seriously affect the RF
signal.
2. If after
reading, the tag is still in the induction zone, the RF reader will not send
data and without any hints.
Ⅴ Common problems
1. Operation without feedback:
Please check whether the interface plugged in, whether the tag is a valid or
whether another RF tag is within the reading range.
2. Data error: Please check Whether
the mouse is moved, whether the reader is in a critical state and whether the
cable length is too long.
