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NANOPW - NANOPB
Wiegand 125 Khz proximity reader
INSTALLATION MANUAL
6] OUTPUT FORMATS 26, 30 AND 44 BIT WIEGAND
Chronograms
Open collector output with internal pulls up 1K at +5V.
26-BIT WIEGAND OUTPUT
1 - First parity: 1-bit – even parity for the fi rst 12-bit
Code of the badge: 6 half byte represent the last 6 digit of the code (4bit = 1 digit of a code)
Each byte is transferred from bit 7 to bit 0.
2 - Second parity: 1 bit – odd parity for the last 12-bit.
Bit 1 Bit 2 to bit 25 Bit 26
Even Parity on bit 2 to bit 13 Data (24 bit)
Odd Parity on bit 14 to bit 25
Exemple: code of the badge is 0102166A37.
1 0001 0110 0110 1010 0011 0111 0
Parity 1 1 6 6 A 3 7 Parity 2
The code transmitted is in hexadecimal format 166A37
Parity 1: 0 if the number of 1 in bit 2 to bit 13 is even,
1 if the number of 1 in bit 2 to bit 13 is odd.
Parity 2: 0 if the number of 1 in bit 14 to bit 25 is odd,
1 if the number of 1 in bit 14 to bit 25 is even.
0 logic
\DATA1
\CLOCK
\DATA0
50 μs 50 μs
2ms 2ms
1 logic
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