Wiegand Converter Dual Wiegand Data to RS232 Serial Port

WG2RS232 converter is designed for embedding into products manufactured by third-parties,
this converter is designed with 2 ports for taking up to 2 Wiegand sources using Wiegand 26, or Wiegand
37 bit format and converting it to a RS232 data stream at 9600 Baud

automatically distinguish wiegand format
Two separated wiegand input ports.
Two RS232 output ports.
DC operation from 7 V 24V DC
Wiegand 26 bit format
Wiegand 37 bit format (*1)
Outputs hexadecimal ASCII characters at 9600 Baud.
Small unit size of 49 x 45mm
4 mounting holes
(1) Other formats available on request.

NO need to set the wiegand input format, converter will automatically distinguish the
Wiegand format and transfer the to RS232 data stream.
Wiegand format can be from 24 bit to 44 bit etc. output format is available on request.


Wiegand input format description:
Wiegand protocol provides 2 lines for data transfer. A pulsed transition on the DATA1 line indicates a logic
1 bit, while a pulsed transition on the DATA0 line indicates a logic 0 bit. In their idle state both lines
are held high. During data transfer the appropriate logic line will pulse low for 50uS followed by a
period of 2ms where both lines are held high. In this fashion each bit is transmitted in sequence until
all bits are sent. The end of the transmission is signaled by both lines being held high for more than
50mS. The following figure shows an example of the timing sequence for Wiegand protocol.
Wiegand


Wiegand 26 input format description:
Wiegand 26 protocol is defined as a stream of 26 bits, consisting of 1 Even parity bit, 24 data bits, and 1
Odd parity bit.
The converter will read a signal presented in Wiegand 26 format and after checking for parity and bit length
will convert the data stream to a serial RS232 output on the corresponding output connector. As only
24 bits of the 26 bit stream is data the string is converted to 6 ASCII coded characters representing
24bits in hexadecimal coding.

The format for this is:
XXYYZZ where XX are the hexadecimal representation of bits 1-8
YY are the hexadecimal representation of bits 9-16
ZZ are the hexadecimal representation of bits 17-24
is a carriage return character 0D

Wiegand 37 input format description:
Wiegand 37 protocol is defined as a stream of 37 bits, consisting of 1 Even parity bit, 35 data bits, and 1
Odd parity bit.

The converter will read a signal presented in Wiegand 37 format and after checking for bit length will
convert the data stream to a serial RS232 output on the corresponding output connector. As only 35
bits of the 37 bit stream is data the string is converted to 9 ASCII coded characters representing 35bits
in hexadecimal coding.

The format for this is:
MKKXXYYZZ where M is the hexadecimal representation of bits 1-3
KK are the hexadecimal representation of bits 4-11
XX are the hexadecimal representation of bits 12-19
YY are the hexadecimal representation of bits 20-27
ZZ is the hexadecimal representation of bits 28-35
is a carriage return character 0D