Reader Functionality
AYC-Fx4 and AYC-Gx4 family manual
Page 18
Option 1: Single Key, 6-Bit Wiegand (Rosslare Format)
Each key press immediately sends 4 bits with 2 parity bits added.
Even parity for the first 3 bits and odd parity for the last 3 bits.
0= 1 1010 0 ="A" in Hexadecimal
6= 1 0110 0
1= 0 0001 0
7= 1 0111 1
2= 0 0010 0
8= 1 1000 1
3= 0 0011 1
9= 1 1001 0
4= 1 0100 1
*= 1 1011 1 ="B" in Hexadecimal
5= 1 0101 0
#= 0 1100 1 ="C" in Hexadecimal
Option 2: Single Key, 6-Bit Wiegand Nibble and Parities
Each key press immediately sends 4 bits with 2 parity bits added.
Even parity for the first 3 bits and odd parity for the last 3 bits.
0 = 0 0000 1
6 = 1 0110 0
1 = 0 0001 0
7 = 1 0111 1
2 = 0 0010 0
8 = 1 1000 1
3 = 0 0011 1
9 = 1 1001 0
4 = 1 0100 1
* = 1 1010 0 = "A" in Hexadecimal
5 = 1 0101 0
# = 1 1011 1 = "B" in Hexadecimal
Option 3: Single Key, 8-Bit Wiegand Nibbles Complemented
Inverts the most significant bits in the message leaving the least 4
significant bits as Binary-Coded Decimal (BCD) representation of
the key. The host system receives an 8-bit message.
0 = 11110000
6 = 10010110
1 = 11100001
7 = 10000111
2 = 11010010
8 = 01111000
3 = 11000011
9 = 01101001
4 = 10110100
* = 01011010 = "A" in Hexadecimal
5 = 10100101
# = 01001011 = "B" in Hexadecimal
