Rosslare CSN SELECT AYC-6355 Series Installation And User Manual page 32

Reader Functionality
Where: D = 1
C = 2
B = 3
A = 4
Option 5: Wiegand 34-Bit
In this mode, 4 LSB bytes of card serial number are transmitted in
Wiegand 34-Bit format. Bytes are sent in reversed order. The LSB part
of the card serial number is sent first and the MSB byte is sent last. An
even parity is sent first, followed by 32-Bit data and an odd parity bit.
(EP) AAAA AAAA BBBB BBBB CCCC CCCC DDDD DDDD (OP)
Where: EP = Even parity for first 16 data bits
OP = Odd parity for last 16 data bits
A = 4
B = 3
C = 2
D = 1
Option 6: Wiegand 40-Bit
In this mode, 4 LSB bytes of card serial number are transmitted in
Wiegand 40-Bit format. Bytes are sent in reversed order. The LSB part
of card serial number is sent first. The last byte sent is a Checksum
byte generated by adding 4 data bytes and discarding the remainder
beyond 8 bytes.
AAAA AAAA BBBB BBBB CCCC CCCC DDDD DDDD (CSUM)
Where: A = 4
B = 3
C = 2
D = 1
CSUM = Checksum value, 1 byte (A+B+C+D)
32
st
(LSB) byte of card serial number
nd
byte of card serial number
rd
byte of card serial number
th
(MSB) byte of card serial number
th
(MSB) byte of card serial number
rd
byte of card serial number
nd
byte of card serial number
st
(LSB) byte of card serial number
th
(MSB) byte of card serial number
rd
byte of card serial number
nd
byte of card serial number
st
(LSB) byte of card serial number
AYC-x6355 (Rev. B) Installation and User Manual