G4 Pro Series
User Manual
P a g e
| 87
Copyright©2022 ZKTECO CO., LTD. All rights reserved.
Various common Wiegand format definitions:
Wiegand Format
Description
Wiegand26
ECCCCCCCCCCCCCCCCCCCCCCCCO
Consists of 26 bits binary code. The 1
st
bit is the even parity bit of the 2
nd
to 13
th
bits, while the 26
th
bit is the odd parity bit of the 14
th
to 25
th
bits. 2
nd
to 25
th
bits
are the card numbers.
Wiegand26a
ESSSSSSSSCCCCCCCCCCCCCCCCO
Consists of 26 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
13
th
bits, while the 26
th
bit is the odd parity bit of the 14
th
to 25
th
bits. 2
nd
to 9
th
bits are the site codes, while the 10
th
to 25
th
bits are the card numbers.
Wiegand34
ECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO
Consists of 34 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
17
th
bits, while the 34
th
bit is the odd parity bit of the 18
th
to 33
rd
bits. 2
nd
to 25
th
bits are the card numbers.
Wiegand34a
ESSSSSSSSCCCCCCCCCCCCCCCCCCCCCCCCO
Consists of 34 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
17
th
bits, while the 34
th
bit is the odd parity bit of the 18
th
to 33
rd
bits. 2
nd
to 9
th
bits are the site codes, while the 10
th
to 25
th
bits are the card numbers.
Wiegand36
OFFFFFFFFFFFFFFFFCCCCCCCCCCCCCCCCMME
Consists of 36 bits of binary code. The 1
st
bit is the odd parity bit of the 2
nd
to
18
th
bits, while the 36
th
bit is the even parity bit of the 19
th
to 35
th
bits. 2
nd
to 17
th
bits are the device codes. The 18
th
to 33
rd
bits are the card numbers, and the
34
th
to 35
th
bits are the manufacturer codes.
Wiegand36a
EFFFFFFFFFFFFFFFFFFCCCCCCCCCCCCCCCCO
Consists of 36 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
18
th
bits, while the 36
th
bit is the odd parity bit of the 19
th
to 35
th
bits. 2
nd
to 19
th
bits are the device codes, and the 20
th
to 35
th
bits are the card numbers.
Wiegand37
OMMMMSSSSSSSSSSSSCCCCCCCCCCCCCCCCCCCE
Consists of 37 bits of binary code. The 1
st
bit is the odd parity bit of the 2
nd
to
18
th
bits, while the 37
th
bit is the even parity bit of the 19
th
to 36
th
bits. 2
nd
to 4
th
bits are the manufacturer codes. 5
th
to 16
th
bits are the site codes, and the 21
st
to 36
th
bits are the card numbers.
Wiegand37a
EMMMFFFFFFFFFFSSSSSSCCCCCCCCCCCCCCCCO
Consists of 37 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
18
th
bits, while the 37
th
bit is the odd parity bit of the 19
th
to 36
th
bits. 2
nd
to 4
th
bits are the manufacturer codes. 5
th
to 14
th
bits are the device codes, and15
th
to
20
th
bits are the site codes, and the 21
st
to 36
th
bits are the card numbers.
Wiegand50
ESSSSSSSSSSSSSSSSCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO
Consists of 50 bits of binary code. The 1
st
bit is the even parity bit of the 2
nd
to
25
th
bits, while the 50
th
bit is the odd parity bit of the 26
th
to 49
th
bits. 2
nd
to 17
th
bits are the site codes, and the 18
th
to 49
th
bits are the card numbers.
“C
“denotes the card number; “
E”
denotes the even parity bit; “
O”
denotes the odd parity bit;
“F
“ denotes the facility code; “
M”
denotes the manufacturer code; “
P”
denotes the parity bit; and
“
S”
denotes the site code.