HID Wiegand PINPad Rev C Installation Guide - Manual (Page 3)

PINpad 8-bit Wiegand Reader, 7393760, rev E
Keypad Data
Each keypad entry will transmit the respective eight-bit binary word, see Table 1. The four
Least Significant Bits (LSB) represent the binary equivalent of the decimal character being
entered in the keypad (except for the * and the # keys). The four Most Significant Bits
(MSB) represent the “Ones complement” of the four LSBs.
Table 1 Keypad 26-bit Data Stream
Keypad Entry MSB LSB Keypad Entry MSB LSB
0 1111 0000 6 1001 0110
1 1110 0001 7 1000 1111
2 1101 0010 8 0111 1000
3 1100 0011 9 0110 1001
4 1011 0100 * 0101 1010
5 1010 0101 # 0100 1011
*Replace the “1”s with “0”s and the “0”s with “1”s to determine the Ones Complement of a binary
number.
October 10, 2007 © 2007 HID Global Corporation. All rights reserved. Page 3 of 6