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COMMUNICATIONS PROTOCOLS IN AERONAUTICS

by George Novacek

Start ý Data Bus Systems ý Timing is the Secret ý ARINC 429 ý CSDB and ASCB ý MIL-STD-1553B ý ARINC 629 and Beyond ý ARINC 429 Implementation ý Data Format ý Wrap Up ý Sources and PDF

WRAP UP

ARINC 429 is a slowpoke protocol by any standard, yet after nearly 30 years, it remains the most popular communications protocol onboard aircraft. The reason is simple: ARINC 429 is well-defined, reliable, easy to implement, inexpensive, and its throughput is adequate for most applications outside the cockpit. More sophisticated protocols are needed when large amounts of data need to be quickly and reliably moved around (this is generally the case in the cockpit) or when weapons systems need to be controlled. In the future, weýll take a closer look at the intriguing MIL-STD-1553B.