Keypad Programming Instructions (AY-Q6350)
22 AY-Q6x50 Family Installation and Programming Manual
Where: EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
F = 8-Bit Facility code
A = 24-Bit code generated from keyboard
5.7.6 6 Keys BCD and Parity Bits, Wiegand 26-Bit
This option sends a 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, (# and * keys are valid), 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:
A = The first key entered D = Fourth key entered
B = Second key entered E = Fifth key entered
C = Third key entered F = Sixth key entered
5.7.7 Single Key, 3x4 Matrix Keypad
Each key press immediately sends 4 bits data, no parity bits added.
0 = 0000 6 = 0110
1 = 0001 7 = 0111
2 = 0010 8 = 1000
3 = 0011 9 = 1001
4 = 0100 * = 1010 = "A" in Hexadecimal
5 = 0101 # = 1011 = "B" in Hexadecimal
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