API Documentation
Everything you need to interact with AccessGrid via API.
Pyramid Wiegand Format
Everything you need to understand Pyramid Wiegand Format
Card format overview
A proprietary 39-bit card format used in access control systems, featuring a unique structure composed of 17-bit site code and 20-bit card number, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.
Pyramid Wiegand Format format properties
17 bits. The facility code range is 0 to 131,071.
20 bits. A unique serial number (0-1,048,575) for each card within that facility code.
Even Parity for Even parity over bits 1-18.
Odd Parity for Odd parity over bits 19-38.
Generate examples
Put in the values for this card format, we'll generate the results in a few different formats.