Rosslare AYC-E65BB Installation And Programming Manual page 22

Reader Operation
4.2.3.1 Single Key, Wiegand 6-Bit (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
1= 0 0001 0
2= 0 0010 0
3= 0 0011 1
4= 1 0100 1
5= 1 0101 0
4.2.3.2 Single Key, Wiegand 6-Bit 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
1 = 0 0001 0
2 = 0 0010 0
3 = 0 0011 1
4 = 1 0100 1
5 = 1 0101 0
4.2.3.3 Single Key, Wiegand 8-Bit Nibbles Complemented
This option inverts the most significant bits in the message leaving the
least 4 significant bits as a Binary Coded Decimal (BCD) representation
of the key. The host system receives an 8-bit message.
0 = 11110000
1 = 11100001
2 = 11010010
3 = 11000011
4 = 10110100
5 = 10100101
4.2.3.4 4 Keys Binary + Facility Code, Wiegand 26-Bit
This option buffers 4 keys and outputs keypad data with a 3-digit
Facility code like a standard 26-bit card output.
22 AYC-Ex5/T65 Series Installation and Programming Manual
6= 1 0110 0
7= 1 0111 1
8= 1 1000 1
9= 1 1001 0
= 1 1011 1 ="B" in Hexadecimal
#= 0 1100 1 ="C" in Hexadecimal
6 = 1 0110 0
7 = 1 0111 1
8 = 1 1000 1
9 = 1 1001 0
= 1 1010 0 = "A" in Hexadecimal
# = 1 1011 1 = "B" in Hexadecimal
6 = 10010110
7 = 10000111
8 = 01111000
9 = 01101001
 = 01011010 = "A" in Hexadecimal
# = 01001011 = "B" in Hexadecimal