CRC200R USER GUIDE ISSUE 02
B-1
Appendix B – Card Formats
Clock & Data (ISO/ABA Track 2)
This is an example of card format parameters for an ISO card to be entered in the ‘Card Format’
menu item. The card number is 0012340001 and the lowest 8 digits need to be read .
CARD NUMBER
Digit No. 0 1 2 3 4 5 6 7 8 9
Value 0 0 1 2 3 4 0 0 0 1
You would set it up as follows: -
Digits: 10
Card Len: 8
Card Loc: 2
Wiegand
This is an example of card format parameters for Wiegand card using a standard 26-bit format.
The structures for other Wiegand formats are more complex and may not be possible to decode.
As no site code is necessary, you can use any number of available 24 bits (excluding the parity
bits) to form the card number. The most significant bit is determined by the ‘Card Loc’ parameter
and the number of bits used is determined by ‘Card Bits’.
When ‘Card Test’ is performed, the information on the card is displayed on the screen in
hexadecimal form.
The conversion from an example hexadecimal reading of 008A5AC to a binary frame structure is
shown below.
Use a scientific calculator (available on MS windows) to convert from Hex to binary:
0 0 8 A 5 A C
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 1 1 0 1 0 1 1 0 0
P CARD NUMBER = 70837 P
Enter the bits to be used in the card number (00010001010010110101 in this example) into a
scientific calculator in binary mode and convert it to decimal.
The settings for the CRC200R would be as follows:-
Number of Bits: 26
Wiegand Even Bits: 13
Wiegand Odd Bits: 13
Wiegand Card Bits: 20
Wiegand Card Loc: 5
If you are in any doubt about the format of the cards that you wish to use, contact Nortech’s
technical support team, who would be happy to help you identify the appropriate parameters.
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