ZKaccess KR300 User manual

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
Contents
1. KR300 Profile........................................................................................1
2. Appearance...........................................................................................3
3. Connection with access controller.........................................................4
3.1 RS232 Communication...........................................................5
3.2 Wiegand communication.........................................................6
4. ID/Mifare card operations......................................................................7
5. Parameter settings of card reader.........................................................8

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
1. KR300 Profile
Profile:
Double frequency product KR300 card reader (125KHz and 13.56MHz Card Reader), introduction of foreign core
technology update and new production processes, completely independent intellectual property rights, small
power consumption, high sensitivity, far reading distance, high performance, low price, anti-interference, strong
stability, mainly used in smart parking, access channel management, access control and so on industries,
built-in receiving antenna, standard operate frequency 125KHz and 13.56MHz, the use of contactless radio
frequency ID cards with EM format and IC series Mifare cards.
Features:
Double frequency design, support ID cards and Mifare cards together
A variety of communication interfaces, ID card has interfaces of Wiegand 26, Wiegand 34. Mifare card has
interfaces of Wiegand 26, Wiegand 34, RS232. Wiegand 26 or Wiegand 34 can be set by the control system
of Wiegand reader, and the default setting is Wiegand G26. The Wiegand data format of card reader can
also be set by the control system of Wiegand reader.
Support to output the serial number of card, at the same time also do read and write operations for Mifare
cards.
Small size, lightweight and compact appearance.
Red light, green light, the buzzer with external control interfaces.
Since using epoxy resins to seal completely, interferences of severe environment can be reduced to the
minimum.

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
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Technical parameters
Operate frequency of built-in receiving antenna: ID as standard 125KHz and Mifare as standard 13.56MHz
Read response speed: less than 0.2s
Power supply specification: +DC12V
Operate current: 100MA
Appearance size: 77.5 *43.5* 16MM (L * W * H)
Supported cards: ID cards and Mifare cards
Read distance: greater than 3CM (The distance is varied with the card)
Communication distance: RS232 is greater than 10 meters, and Wiegand is greater than 50 meters
Operate temperature: -10℃～+75℃(low temperature and high temperature may affect the product, if
performance changed, it will restore naturally after temperature recovery)

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
2. Appearance
Indicator light
Sense area Connection terminal
Front View Side View Back View
Indicator status: when power on, the buzzer will have a prompt sound of ‘di’, indicating the complete initialization,
at the same time the red light will be lighted up; When brushing the card, the buzzer will have a prompt sound of ‘di’,
at the same time the red light is off, later the green light will flash once; when in standby, the red light will be constant
on.
Sense area: sense area of card.
Connection terminal definitions:
Note: The black Ground cable is in common in this table.
Type
Cable color and
definition
Function
Power
connection
Red（DC+12V）
DC+12V
Black（GND）
Ground cable
Wiegand
connection
Green（WD0）
Output Wiegand data 0 signal
White（WD1）
Output Wiegand data 1 signal
Black（GND）
Ground cable
RS232
connection
Yellow（TXD)
Send RS232, and receive the opponent’s RXD
Blue（RXD）
Receive RS232, and receive the opponent’s TXD
Black（GND）
Ground cable
Red light
Brown
The control cable of red light, which is off when
low level and on when high level
Green light
Orange
The control cable of green light, which is on when
low level and off when high level.
Buzzer
Grey
The control cable of buzzer, which will buzz when
low level and stop buzzing when high level.

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
3. Connection with access controller
KR300 as a card reader, it cannot work by itself, only can connect with the access controller or access
control device to provide a front-end to identify cards. As below shown (when connection, please refer to
connection terminal definitions):
KR300
Connection terminal of
access control device
3.1 RS232 Communication
RS232 Communication can be used to connect the computer to set the parameters of card reader by the
control system of Wiegand reader and can not be used to connect the access control software in PC to
enroll cards etc. operations. The detailed operation about card enrollment, please refer to the
corresponding document of access control device.
Note: When ID cards in card-reading area, the reader can output the ID card numbers through Wiegand;
when Mifare card is in card-reading area, the reader can output the card number through Wiegand and
can output four-byte card number through RS232 at the same time. And more, the card reader will enter
into the bidirectional RS232 communication status automatically. In reverse, if no Mifare card is in
card-reading area, the reader can not do RS232 communication which is only effective for Mifare cards

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
3.2 Wiegand communication
KR300 card reader can provide a standard or self-defined Wiegand signal for access controller. The
connection method is the same as the other card readers.
Time sequence diagram of Wiegand code
0 status wave
1 status wave

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
4. ID/Mifare card operations
The special card reader module of contactless RF ID card: the read distance is from 5cm to 8cm, and
the supported cards are D cards of thin cards (0.88mm), thick and thin cards (1.05mm), thick cards
(1.88mm) with the operate frequency as 125KHz.
The special card reader module of contactless RF Mifare card: the read distance is from 3cm to 5cm,
and the supported cards are the contactless intelligent Mifare cards with the operate frequency as
13.56MHz.
Enroll cards through access control device; please refer to the relevant document about access control
device.
Note: The read distance is impact slightly by the installation environments such as a large area of
mental, interferences of strong and low frequency signals, so it should be far away from the
interference sources.

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
www.zkaccess.com
5. Parameter settings of card reader
The parameters of KR300 card reader can be read and set by the control system of Wiegand reader.
The control system of Wiegand reader can set the baud rate of RS232 communication, Wiegand model,
Wiegand control, as well as Settings about Mifare card. When setting for Mifare card, please place
Mifare card on the effective sense area of card reader till the complete setting, otherwise the invalid
operation.
The operations about the control system of Wiegand reader:
Open directly, the following window is displayed:
The software window is divided into two parts: the left is to display read and write status, and the right is
to display three operational windows of COM setting, System setting, and S50/S70. Three operational
windows are switched by three corresponding buttons at the bottom.

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
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COM debugging assistant
Before connecting the card reader, the parameters in this window should be set well, that is, the
handshake protocol. As above shown, this window consists of three parameters: communication port,
baud rate, system address. Select the corresponding data according to the actual situation. In general, it
is as the default state, that is, the communication port to COM1 and the baud rate 115200 selected.
System command
This window is used to set baud rate, set Wiegand model, get reader version, and set Wiegand 26
control.
Set baud rate: set the baud rate of RS232 communication between card reader and host. This baud
rate will be stored into EEPROM as newly default baud rate. After setting successfully, the card reader
will use new baud rate immediately. There are five options of 9600, 19200, 38400, 57600, 115200 when
clicking the drop-down list. The communication speed is varied with the set value. Since high speed
when high value, the default baud rate is as 115200.Press the setting button to apply, then the left
window of read and write status will display the communication process.
Wiegand model: set the Wiegand output format of card reader. It consists of ID, Mifare, Wiegand 26,
Wiegand 34.
Wiegand26 control: set the falling edge’s width of Wiegand data’s each bit and the rising edge’s width
among bits. The default data setting of effective low level is as 50us and the data space is as 1MS.
Get reader version: get the version number of reader.

201 Circle Drive N, Suite 116 Piscataway, NJ 08854 Tel: [phone] Fax: [phone]
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S50/S70
This window is used to do operations for the cards. It consists of read card, write card, and card number.
Read card: it includes the access model control (Idle and All, KeyA and KeyB), number of blocks (that is
the number of blocks to be read, the range is 01-04), the start address of the blocks to be read (the
range: hex 00-3F, that is, from 00 block to 63 blocks), the six bytes block key. This operation can be set
as ‘Auto’.
Write card: it includes the access model control (Idle and All, KeyA and KeyB), number of blocks (that is
the number of block to be written, the value range is 01-04), the start address of the blocks to be written
(the range: hex 00-3F, that is, from 00 block to 63 blocks), the six bytes block key, the data for write to
the card. This operation can be set as ‘Auto’.
Card number: the modes to search card includes the idle model (one time do operations for only a
card) and the all mode (one time do operations for several cards). Halt is the sign to do operation for
card. No Halt is the sign not to do operation for card. When the card is done by the Halt operation
already, system cannot finish searching card under Idle mode. While under All mode, Halt don’t affect
the card operation and system can search card. The above operation, please make sure the card is
always operated in the antenna range.
The left window of read and write status displays the card numbers and the communication process.