2024年11月20日 · Wondering if ARINC-664 (and ARINC-629) have backwards combability with ARINC-429. I realize -664 uses Ethernet while -429 is implemented using a two-wire data bus. However, wanted to see if any of the 32-bit ARINC-429 are "ported" upwards.

2015年8月31日 · ARINC 429 transceivers have been implemented with 32-bit shift registers. Parallel access to that shift register is often octet-oriented. As such, the bit order of the octet access is the bit order of the accessing device, which is usually LSB 0; and serial transmission is arranged such that the least significant bit of each octet is ...

2016年10月17日 · A Boeing 787 incorporates ARINC 664 for the main network with some subsystems on ARINC 429 and a number of sensors and cockpit controls on CAN (ARINC 825). Almost all the switches on the B787 overhead panel go through a couple CAN busses, eliminating dozens of wire runs. There's also a significant difference in cost. $\endgroup$ –

2017年6月15日 · ARINC 429 is a defined standard that not only describes the packet structure (32 bits) but also the data formats for different labels depending on the equipment ID. To know how to properly decode an ARINC 429 label you need to know the Equipment ID, which can then be used to look up the meaning of a specific label.

2016年9月27日 · The receiver has to be programmed. It's important to remember that A429 is a unidirectional hard-wired bus with a single transmitter and multiple receivers. Each connection is physically unique and the reason for all the pin-out diagrams …

I think I have an understanding of the differences between the types of ARINC word formats, but would just like to get some input to see if my understanding is correct. In the ARINC 429 specification, it is discussed that there are some differences in how messages are handled between the two formats. Data Field

2022年1月27日 · Appendix E of the ARINC 429 Part 1 spec dated 2004 provides the guidelines for label assignments such as: label ranges for BNR/BCD/Discrete data; Maintenance vs normal data; Label 000 should not be used and label 377 is reserved for the Equipment Identification.

2017年7月11日 · The primary reason for moving away from ARINC-429 is that it is a single transmitter/multiple receiver architecture. This results in a large amount of physical wire. That adds weight and requires maintenance. A bus such as ARINC-664, which is based on Ethernet, can significantly reduce wire.

2017年7月9日 · ARINC 429 is a unidirectional one-to-many (broadcast) transfer bus with a maximum of 20 receivers. Source Design with four unidirectional ARINC 429 buses. There is normally little need to identify the source, as there is only one. So there is no field in the protocol word dedicated for ID transmission.

2023年1月25日 · Devices in the aircraft use ARINC protocols as the way they communicate with each other, and to communicate with ground services. There’s over 100 different ARINC standards and 717 establishes the data format for flight data recording.