Stid ultrys - Protocoles Wiegand; Wiegand 3 I

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© STid – MU_ULTRYS_V3.0.1_EN
Protocoles Wiegand
Chronograms
* times for variants 3i, 3V
Wiegand 3i
Message
The frame consists of 26 bits as follows:
Bit 1
Bit 2 …Bit 25
Bit 26
Structure
1st parity
Data (24 bits)
2nd parity
Description
1 even parity bit calculated
from bits 2 to 13 included
6 hexadecimal digits
MSByte first
1 odd parity bit calculated
from bits 14 to 25 included
Example
or the hexadecimal code “0x0FC350 “, the frame sent will be:
0
0000
1111
1100
0011
0101
0000
1
0
F
C
3
5
0
Parity
Digit 1
Digit 2
Digit 3
Digit4
Digit 5
Digit 6
Parity
Note
The Wiegand 26 bits is generally expressed as Code Site + User Code in decimal.
Byte 1
Byte 2 – Byte 3
Structure
Site Code
Card Code
Max Value
0xFF - 255 in decimal
0xFF FF - 65535 in decimal
Example
0x0F - 15 in decimal
0xC350 - 50000 in decimal