Keypad Programming Instructions
24 AY-T6350 Installation and Programming Manual
5.5.4 Wiegand 26-Bit and Facility Code
In this mode, 1 byte Facility code followed by 2 bytes of the card's
serial number are transmitted in Wiegand 26-Bit format. Two parity
bits are added. An even parity bit is sent first, followed by one facility
code byte then followed by a two-byte CSN ending with an odd
parity bit.
(EP) FFFF FFFF AAAA AAAA AAAA AAAA (OP)
Where: EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
F = 1 byte Facility code
A = 2 bytes code generated from the CSN
The third and fourth bytes of the CSN is not transmitted.
5.5.5 Wiegand 32-Bit
In this mode, 4 bytes of the CSN are transmitted in Wiegand 32-bit
format. No parity bits are added.
AAAA AAAA BBBB BBBB CCCC CCCC DDDD DDDD
Where: A = 4
th
(MSB) byte of the CSN
B = 3
rd
byte of the CSN
C = 2
nd
byte of the CSN
D = 1
st
(LSB) byte of the CSN
5.5.6 Wiegand 32-Bit Reversed
In this mode, 4 bytes of the CSN are transmitted in Wiegand 32-bit
format. Bytes are sent in reversed order. LSB part of the CSN is sent
first and MSB byte is sent last. No parity bits are added.
DDDD DDDD BBBB BBBB CCCC CCCC AAAA AAAA
To Next Page
Loading...
Need help?
General
