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ProBio & ProFAC User Manual 53
Field Description
Even parity check
bit
The even parity check bit is determined by bits 2-13. If there is an even
number of 1's, the even parity check bit is 0. If there is an odd number of 1's,
the even parity check bit is 1.
User ID/Card
number (bit 2
through bit 25)
User ID/Card number (card code, 0-16777215) and bit 2 indicates the most
significant bit (MSB).
Odd parity check
bit
The odd parity check bit is determined by bits 14-25. If there is an even
number of 1's, the odd parity check bit is 1. If there is an odd number of 1's,
the odd parity check bit is 0.
For example: A user with the user ID of 12345 has the card number of 0013378512 and the failure ID is
set to 1.
1. When the output content is set to user ID, the Wiegand output of the system is as follows after the
user passes the verification.
0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 1 0 0 1 1
Even parity check bit User ID = 12345 in binary system Odd parity check bit
2. When the output content is set to card number, the Wiegand output of the system is as follows
after the user passes the verification.
1 1 1 0 0 1 1 0 0 0 0 1 0 0 0 1 1 1 1 0 1 0 0 0 0 0
Even parity check bit User ID = 0013378512 in binary system Odd parity check bit
3. When the verification fails, the Wiegand output of the system is as follows:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
Even parity check bit Failure ID = 1 in binary system Odd parity check bit

NOTE: When output content is beyond the preset range of the Wiegand format, the low-order bits
are reserved and high-order bits are discarded. For example, if a user ID is 888 888 888, which is 110 100
111 110 110 101 111 000 111 000 in binary system, the last 24 bits, that is, 111 110 110 101 111 000 111
000 are outputted and the first 6 bits 110 100 are discarded because the Wiegand26 format supports 24
bits of output content.
16.2.2 Wiegand 34 Introduction
The system provides the embedded Wiegand 34-bit format.
Composition of the Wiegand 34-bit format: 2-bit parity check bits and 32-bit output content (user ID or
card number). The 32-bit binary code can indicate 4 294 967 296 (0-4 294 967 295) different values.