Output Formats 26, 30 Et 44 Bits Wiegand - CDVI DGLIMWLC Manuel D'installation

INSTALLATION MANUAL
DGLPMWLC - DGLIMWLC
13.56 MHZ Mifare

6] OUTPUT FORMATS 26, 30 ET 44 BITS WIEGAND

Chronograms
\DATA1
\CLOCK
\DATA0
Open collector output with internal pulls up 1K at +5V or +12V according the ST4 position.
26-bit Wiegand Output
Structure and description of the code :
Format 26-bit hexadecimal. The output format is 26-bit Wiegand (Signals: DATA1, DATA0 and CLOCK)
The frame is made of 26-bit and built as follow:
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
Even Parity on bit 2 to bit 13
Example: code of the badge is 0100166A37.
1 0001
Parity 1 1
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
Card Readers - Wiegand Output
®
0 logic
50 μs
Bit 2 to bit 25
Data (24 bit)
0110 0110
6 6
2ms 50 μs
1010
A
1 logic
2ms
Bit 26
Odd Parity on bit 14... bit 25
0011 0111
3 7
cdvi.com
cdvigroup.com
EN
0
Parity 2
11