RF Ideas Inc PCPROXC101 ユーザーズマニュアル
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© 1998-2004 RF IDeas, Inc.
Immediately following is the identification code.
For a 26-bit card this is 16 bits.
FACILITY CODE
The next bits are normally used as the facility
code. For a 26-bit card there are 8 bits.
PARITY BIT
The trailing 1-3 bits are usually a the parity
bit(s).
The software does not perform any data
validation checking. This is due to the fact that
the data must be known before the read in order
to verify its validity.
How to determine your format and masking
Rule1: 1st Convert to Binary
Rule 2: Card data format in binary is typically
something like:
parity + facility code + employee ID + parity
You may have 1-3 parity bits at either end. It
looks like you have 1 at the far end.
As an example let’s assume you have a card
and expect to receive the following number:
816159
If all bits are selected you find waving the card
results in the following number:
144238654
Using the Calculator supplied with Windows,
select the scientific mode and find the binary
equivalents for each of the above decimal
numbers.
MSB LSB
1000100110001110100000111110 (144238654)
For a 26-bit card this is 16 bits.
FACILITY CODE
The next bits are normally used as the facility
code. For a 26-bit card there are 8 bits.
PARITY BIT
The trailing 1-3 bits are usually a the parity
bit(s).
The software does not perform any data
validation checking. This is due to the fact that
the data must be known before the read in order
to verify its validity.
How to determine your format and masking
Rule1: 1st Convert to Binary
Rule 2: Card data format in binary is typically
something like:
parity + facility code + employee ID + parity
You may have 1-3 parity bits at either end. It
looks like you have 1 at the far end.
As an example let’s assume you have a card
and expect to receive the following number:
816159
If all bits are selected you find waving the card
results in the following number:
144238654
Using the Calculator supplied with Windows,
select the scientific mode and find the binary
equivalents for each of the above decimal
numbers.
MSB LSB
1000100110001110100000111110 (144238654)