Architecture of ARINC 629 Data Bus For Boeing 777-200ER Commercial Aircraft.pdf

The four ARINC 629 buses which stands for the
Aeronautical Radio INC, is a private organization
comprising members from the airlines, and
manufacturers of aircraft and avionics equipment.
GENERATORS
The Boeing 777 has three main 120 KVA generators for
115–200 Volt AC power.
MISSION MANAGEMENT COMPUTER
Airplane Information Management System (AIMS) made
by Honeywell
OPERATING SYSTEM
MS-DOS
PROCESSOR
Advanced Micro Devices (AMD) 29050 microprocessor
RANDOM-ACCESS MEMORY (RAM)
4,854 KB
DISK SPACE
15,656 kilobytes (KB)
LANGUAGE
Ada programming language
PROGRAM LENGTH
613,000 new lines of code
ARINC 629
The Airplane Information Management System (AIMS) is
the "brains" of Boeing 777 aircraft. It uses four
ARINC 629 buses to transfer information. There are 2
cabinets on each plane (left and right).
ARINC 629 has the ability to accommodate up to a
total of 128 terminals on a data bus and supports a
data rate of 2 Mbit/s.
CABLE (TRANSMISSION MEDIA)
Page 4 of 6
ASD 27 Jan, 2022
The stub cable has four wires, two to transmit and
two to receive. These cables are in the normal
aircraft wiring bundles.
The basic layout for connecting LRUs to the 629 data
bus using stub cables. The stub cable length is up
to 50ft for TX/RX cable and 75ft for RX only cable.

1. Page 6 of 6
ASD 27 Jan, 2022


ASELSAN A.Ş.
VMFD-68
(Multifuncti
on Display)
XGROUP
Garmin-G5
styled PFD
Honeywell
GNS 530
(Navigation
Display)
Graphics
Processor 1
Graphics
Processor 2

Radar
Processor
aero Expo
BAE Systems
Airplane
Information
Management
System (AIMS)
(System
Computer Bus
controller)
ASELSAN A.Ş.
ANS-600
(INS GPS
Laser ring
gyro)
Graphics Logging
Rockwell
Collins Inc
6228439 RTA-8XX
(Weather Radar)
Control Panel
Aerovalley
Technologies
ACP100-300-2
(AUDIO CONTROL
PANEL)
Rohde&Schwarz
GmbH&Co. KG
MR6000R/L
(Radio 1)
Rohde&Schwarz
GmbH&Co. KG
MR6000R/L
(Radio 2)
aero Expo-FSX
Radar Altimeter
Rolls-Royce
plc
Rolls-Royce
Trent 800
Engine-1
Auxiliary
Power

Auxiliary
Power
control

APU
Control
ECA GROUP
ARINC 629
Bus
Interface
APU
Honeywell
TRA-67A
IFF
Rolls-Royce
plc
the General
Electric GE90
Engine-2
Rolls-Royce
plc
the Pratt and
Whitney
PW4000
Engine-3
120 KVA
generator-3
120 KVA
generator-2
120 KVA
generator-1
Architecture of ARINC 629 Data Bus
For Boeing777-200ERCommercial Aircraft