Bosch ARD-AYCE65B, Installation Manual

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18 en | Reader Functionality ARD-AYCE65B
| V 1.1 | 2009.08 Installation manual Bosch Sicherheitssysteme GmbH
5.3.6 Option No. 6: 6 Keys BCD and parity bits, 26-Bit
Wiegand
Sends buffer of 6 keys, adds parity and sends a 26-Bit Binary-
Coded Decimal (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 will clear
the PIN code entry buffer, generate 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
F = 8-Bit Facility Code
A = 16-Bit code generated from keyboard
EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
A = First key entered D = Fourth key entered
B = Second key entered E = Fifth key entered
C = Third key entered F = Sixth key entered