| Preamble 1 byte | Address 3–5 byte | Data 1–32 byte | CRC 1–2 byte |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.