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The proximity reader and keypad portions of the PRX-2 both share the Wiegand data lines. Specifically keypad data is transmitted in either an
8-Bit Burst (default) or 26-Bit Wiegand data format.
• The non-mechanical capacitive technology utilized by the PRX-2 is
optimized for use with a bare finger.
• For best operation when entering a PIN it is recommended that the user's
finger be physically lifted from the keypad between key depressions.
• Only one key can be pressed at a time.
A. Keypad Output Formats
• 8-Bit Burst (factory default setting)
• 26-Bit Wiegand
Note: The PRX-2 keypad does not
support magnetic stripe output.
B. Keypad Operation: 26-Bit Wiegand Output
While in the 26-Bit Wiegand mode the user's PIN is outputted by the PRX-2 as the ID Number portion of a 26-Bit Wiegand message. As
such PINs can range from 0 to 65534, with 65535 normally reserved as an error code. The facility code is programmed into the reader at
set-up, while parity is calculated by the reader. The data comprising the 26-Bit Wiegand message is transmitted to the host only when the
"#" key is pressed according to the table in section E below.
To set-up the PRX-2 in the 26-Bit Wiegand mode of operation:
1. Cycle power to the reader, and then verify the reader is powered on.
2. Present the Wiegand Data Mode control card to the reader. The reader beeps four times and enters Facility Code programming mode.
3. Enter 0 (Facility Code disabled) or enter the Facility code to be applied to the keypad. The code may be set anywhere from
0 to 255 (one long beep is sounded if a facility code greater than 255 is entered).
4. Press the "#" key to exit programming mode. The reader beeps four times to indicate programming mode has ended.
Note: Important facts regarding PRX-2 operation in the 26-Bit Wiegand mode:
• The "#" key must be pressed to transmit the 26-Bit Wiegand message to the host.
• Pressing the "
• There is a five second timeout between PIN entries, or entry attempts. If timeout occurs all previous key presses are overwritten.
• The reader beeps four times to indicate a timeout has occurred.
C. Keypad Operation: 8-Bit Burst Output (factory default)
While in the 8-Bit Burst mode each key press results in the PRX-2 transmitting 8-bits of data to the host according to the table in section
E below. To return the PRX-2 to the 8-Bit Burst mode of operation:
1. Cycle power to the reader, and then verify the reader is powered on.
2. Present the Wiegand Keypad Data Mode control card to the reader. The reader beeps four times.
3. Press the "#" key. The reader beeps four times to indicate programming mode has ended.
D. PIN 65535
PIN 65535 is normally used as an error code. The PRX-2 will transmit this code to the host when:
• The "#" key is pressed without any preceding digits.
• The "0" key is pressed any number of times before pressing the "#" key.
• Entering the PIN 65535, or any PIN greater than 65535.
E. Keypad Format Tables
26-Bit Wiegand Format Table
Bit
Number
1
Even parity over bits 2 to 13
Facility Code (0 to 225);
2 to 9
ID Number/PIN (0 to 65535);
10 to 25
26
Odd parity over bits 14 to 25
The factory default Wiegand data transmission setting for the keypad portion of the PRX-2 is
8-bit burst, though it is capable of transmitting data in the 26-Bit Wiegand mode. The keypad
uses the Wiegand Keypad Data Mode control card, presented to the reader, to change
between the 8-bit burst and 26-bit Wiegand data modes.
" key overwrites all previous key presses. The PRX-2 beeps four times when the "
Q
Purpose
Bit 2 is MSM
Bit 10 is MSB
Operation
• For user orientation in non-illuminated environments the 5-key
is always illuminated.
• Card presentation or a key press illuminates the keypad for
approximately 20 seconds. Further, each key press generates
a single beep and LED flash from the PRX-2.
(set unit to this mode to be compatible with Viking products)
8-Bit Burst Format Table
Keypad
Binary
Decimal
Entry
Data
Equivalent
0
11110000
1
11100001
2
11010010
3
11000011
4
10110100
5
10100101
" key is pressed.
Q
Keypad
Binary
Entry
Data
240
6
10010110
225
7
10000111
210
8
01111000
195
9
01101001
180
01011010
Q
165
#
01001011
Decimal
Equivalent
150
135
120
105
90
75
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