Rosslare AYC-E65BB Installation And Programming Manual page 24

Reader Operation
If  is pressed during PIN code entry or a PIN code greater than
65,535 is entered, the keypad clears the PIN code entry buffer,
generates a beep, and is ready to receive a new 5-digit keypad PIN
code.
If the entry of the 1- to 5-digit keypad PIN code is disrupted and a
number key or # is not pressed within 5 seconds, the keypad clears
the PIN code entry buffer, generates a medium length beep and is
ready to receive a new 1- to 5-digit keypad PIN code.
(EP) FFFF FFFF AAAA AAAA AAAA AAAA (OP)
Where:
EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
F = 8-bit Facility code
A = 16-bit code generated from keypad
4.2.3.6 6 Keys BCD and Parity Bits, Wiegand 26-Bit
Option 6 sends buffer of 6 keys, adds parity and sends a 26-Bit BCD
message. Each key is a four bit equivalent of the decimal number.
The keypad PIN code must be 6 key presses long. On the sixth key
press of the 6-digit PIN code, the data is sent across the Wiegand
Data lines as a BCD message.
If the entry of the 6-digit keypad PIN code is disrupted and no number
key is pressed within 5 seconds, the keypad clears the PIN code entry
buffer, generates a medium length beep and is ready to receive a new
6-digit keypad PIN code.
(EP) AAAA BBBB CCCC DDDD EEEE FFFF (OP)
Where:
EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
A = The first key entered
B = Second key entered
C = Third key entered
24 AYC-Ex5/T65 Series Installation and Programming Manual
D = Fourth key entered
E = Fifth key entered
F = Sixth key entered