ZKTeco White LCD Series, Руководство пользователя

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12. Appendix
Figure: Time
Wiegand format
F Series Fingerprint Access Control Wiegand format is a general Access
Control protocol.
26-bit Wiegand formats
The composition of the open de facto industry standard 26 Bit Wiegand
format contains 8 bits for the facility code field and 16 bits for the ID
number field .Mathematically these 8 facility code bits allow for a total
of just 256 (0 to 255) facility codes, while the 16 Id number bits allow
for a total of only 65,536(0 to 65,535) individual ID’s within each
facility code.
26-Bit Wiegand length is 26 Bit, it includes two parity bits.
1 2 9 10 25 26
EP FC CC OP
Table 2: Field definition
Field Purpose
Even parity bit, over bits 1 to 13 judge EP field, if
there are even “ 1”, EP is 0; opposition it is 1.
EP
FC
(bit2-bit 9) Facility code (0-255),
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