User's Manual

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Appendix VI
Wiegand Protocol Format
1. Wiegand Input
This is compatible with HID Card Input
- 26 Bit
P 8 Bit (site code) 16 Bit (card number) P
LSB MSB
- 34 Bit
P 16 Bit (site code) 16 Bit (card number) P
LSB MSB
2. Wiegand Output
- 26 Bit
P 8 Bit (facility code) 16 Bit (user ID) P
Even Parity Odd Parity
LSB MSB
- 34 Bit
P 16 Bit (facility code) 16 Bit (user ID) P
Even Parity Odd Parity
LSB MSB
* Output : MSB → LSB
* Even Parity : If the sum of every even bit is odd, then this
bit will be 1
* Odd Parity : If the sum of every odd bit is even, then this bit
will be 1