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Wiegand Card Formats
Configuration of proximity cards
Facility Code – Same On All Cards
Card Number – Different On All Cards
Parity – Usually First And Last Bit
All Binary Data (Contains Only 1’s And 0’s)
Transmitted On Two Wires (Data 1 and Data 0)
Total Number Of Bits Is Very Important
GENERAL INFORMATION
DATA TRANSMISSION
PARITY CALCULATION
DATA FIELDS
BIANARY CONVERSION
• TOTAL NUMBER OF BITS• EVEN / ODD PARITY BITS• FACILITY CODE START / COUNT• CARD NUMBER START / COUNT
FORMAT DEFINITIONS
• 26 BIT TOTAL LENGTH• 13 BIT EVEN / 13 BIT ODD PARITY• FACILITY CODE BITS 2 – 9 (8 BIT)• FACILITY CODE RANGE 000-255• CARD NUMBER BITS 10 – 25 (16 BIT)• CARD NUMBER RANGE 00000 - 65535
26-BIT WIEGAND FORMAT
[W26]CardLength= 26Even= 13Odd= 13FacilityCodeLength= 8FacilityCodeStart= 1CardNumberLength= 16CardNumberStart= 9
APACS CARDFORMAT.INI
FIPS
• Extended card information– Agency Code– System Code– Credential Number
Sample CARDFORMAT.INI entry for 200-bit FIPS CARD:----------------------------------------------------------------; Format: M19 FIPS 200 bit magnetic format with issue code;; Reference = Field Separator 1 and Field Separator 2; FieldSizes = 4 digits from SS to FS1, 4 digits from FS1 to FS2, 24 digits from FS2 to ES - excluding FS's; CardNumber = 6 digits before FS2; AgencyCode= 4 digits before FS1; SystemCode= 4 digits after FS1; IssueDigits= 8th digit after FS2 [M19]IssueDigits= 17Reference= 1 2FieldSizes= 4 4 24FacilityCode= 0 0 0 0 0 0 0 0 0CardNumber= 0 0 0 3 5 7 9 11 13IssueCode= 0AMS102FacilityCode= 0 0 0 0 0 0 0 0 0AgencyCode= 248 250 252 254SystemCode= 2 4 6 8
Did you know?
• Facility codes can help companies save money by reusing cards?
• Facility codes could be a thing of the past.
• You should always track cards.
• Not all cards can be ordered from any vendor.
What about…?
• What kind of cards to buy?
• How do I know what bit format I have?
• How do I know what the card number is?
• Can I mix and match card types?
