26 Bit Card Format


The standard 26 bit Wiegand format is H10301.  The format consists of 2 parity bits, 8 bit Facility Code and 16 bit Cardholder ID fields.


P = Parity
O = Odd Parity
E = Even Parity
X = Parity mask
F = Facility Code, range = 0 to    255
C = Cardholder ID, range = 0 to 65,535


Card Layout

Card Type:Wiegand
Number of Bits:26
Number of bits to sum for Even Parity:13
Even Parity start:0
Number of bits to sum for Odd Parity:13
Odd Parity start:1
Number of Facility Code bits:8
Facility Code start:1
Number of Cardholder ID bits:16
Cardholder ID start:9
Number of Issue Code bits:0
Issue Code start:0