WPR300-0-0-AC-04
March 2009
Page 11
Wiegand 44-bit Protocol
Tags are reported using Wiegand 44-bit Protocol.
An “EMM” Tag has an 8-bit User
Code and a 32-bit Serial Number.
These are reported as follows:
The 8-bit User Code is reported in bits 1 to 8 of the Protocol.
The 32-bit Serial Number is reported in bits 9 to 40 of the Protocol.
Bits 41 to 44 of the Protocol are the exclusive OR of the preceding 40 bits taken 4
at a time.
Wiegand 26-bit Protocol
Key Codes are reported as a 24-bit code consisting of an 8-bit Facility (or Site) Code,
and a 16-bit binary representation of the Key Code.
The following format is used:
Bit 1 is the even parity over the first 13 bits.
Bits 2 to 9 are the 8-bit Facility Code for Key Codes.
Bits 10 to 25 are the 16-bit Key Code.
Bit 26 is the odd parity over the last 13 bits.
HID Normal
The number of bits to output is determined from the information in the tag and will vary
between tags. The 26-bit or 44-bit selection does not impact on HID Tags.
HID Raw
In this Mode, the entire raw 45-bit HID Tag is output.
Keypad Model Settings (WPK900, WMK900 and WKM900 only)
The 12-button Keypad is used to enter 5-digit PIN-codes in the range 00000 to 65535.
Wiegand protocol constraints disallow PIN-codes from 65536 to 99999. In this case the
Status LED turns Red and the Buzzer activates for 2 seconds.
The Reader can accept 1 to 4-digit PIN-codes by pressing the Hash Key (#) after you
have entered the PIN-code.
Errors made while entering the PIN-code can be corrected by pressing the Star Key (*)
followed by the correct PIN-code.
PIN code up to 5 digits with programmable facility code, output in 26-bit format.
Fixed length buffered keys from 1
– 11 output in hexadecimal format with optional
parity.
An extra button is included at the bottom of the WKM900 model‟s keypad; this button
offers a doorbell facility.
NOTE:
The output of the PIN-code keypad information is in 26-bit Wiegand format.
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