26-Bit Wiegand Format - CDVI SOLARKPW Installation Manual

INSTALLATION MANUAL
SOLARKPW-SOLARKPB
Dual Technology Digicode

8] 26-BIT WIEGAND FORMAT

Chronograms
Interface
- The output format is 26-bit Wiegand (Signals: DATA1, DATA0 and CLOCK),
- Output signal in open collectors (pull up of 2.2K in +5V) 26-bit hexadecimal output format.
The frame is made of 26-bit and built as follow:
- First parity: 1-bit – even parity for the fi rst 12-bit,
- User Code: 3 half of a byte represent the code entered. Each byte is transferred from bit 7 to bit 0,
- Second parity: 1-bit – odd parity for the last 12-bit.
Bit 1
Even parity on bit 2...bit13
KEYPAD CODE
Example with a 4-Digit keypad code: « 1 3 7 A » Then « B » & « 1 3 7 5 » Then « B »
1
Direct Parity 1
Hexadecimal Parity 1
Example with a 5-Digit keypad code: « 7 1 3 7 A » Then « B » & « 7 1 3 7 5 » Then « B »
Direct Parity 1
Hexadecimal Parity 1
Example with a 6-Digit keypad code: « 6 7 1 3 7 A » Then « B » & « 6 7 1 3 7 5 » Then « B »
Direct Parity 1
Hexadecimal Parity 1
- 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.
BADGE CODE EX: 0F01198AAD
Parity 1 1
4
cdvigroup.com
/Proximity reader - Wiegand
®
\DATA1
\CLOCK
\DATA0
50
µS
Bit 2 ... bit 25
Data (24 bits)
0000 0000
0 0
0 0
0 7
0 1
6 7
0 A
9 8
0 logic
2MS
Odd parity on bit 14...bit 25
0001 0011
1 3
0 5
1 3
1 6
1 3
3 E
A A
1 logic
50
2MS
µS
Bit 26
0111 0101
7 A Parity 2
5 F Parity 2
7 A Parity 2
C F Parity 2
7 A Parity 2
8 F Parity 2
D Parity 2
EN
0