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53
1 2 33 34
Even parity
check bit
User ID/Card number
Odd parity
check bit
The following table describes the fields.
Field Description
Even parity check bit
The even parity check bit is determined by bits 2-17. 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, 0-4 294 967 295) and bit 2
indicates the MSB.
Odd parity check bit
The odd parity check bit is determined by bits 18-33. 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 123456789 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 1 1 1 0 1 0 1 1 0 1 1 1 1 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1
Even parity check bit User ID = 123456789 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.
0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 1 0 0 0 1 1 1 1 0 1 0 0 0 0 1
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:
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