ARINC 429 Interface

Interface to the ARINC429 avionics data bus

  • Connects modular dSPACE real-time systems to the ARINC429 data bus
  • Supports up to 32 transmit and receive channels
  • Simulink® block library

Application Areas
The ARINC429 Interface is used to connect dSPACE simulators and prototyping systems to the ARINC429 avionics data bus. It enables dSPACE HIL simulators to be used for testing aircraft electronics, at both the subsystem and the complete-vehicle level (Integrated Flight Testing facilities), and dSPACE prototyping systems to be used for developing new control functions in areas such as engine management (FADEC), flight surface actuation, guidance, and navigation.

Key Benefits
  • Easy configuration of each IP module via a setup block
  • Data manipulation blocks
  • Supports advanced testing by inducing predefined errors in a message
  • Full software support for C handcoded applications

Hardware and Software
The interface consists of the IndustryPack (IP) module carrier board DS4501 and the IP-429HD-88P module from GE Intelligent Platforms. On the real-time model side, a Simulink block library and S-functions are provided to access the IP module and its receive and transmit channels. The block library provides access to the ARINC429 bus on raw value level, i.e., transmit and receive blocks in the model work with 32-bit ARINC429 words without distinguishing between data bits.

ARINC429 Bus
The ARINC429 specification defines how avionics equipment and systems should communicate with each other. It is an industry standard that is used on virtually all commercial aircraft. The resulting bus system is the most commonly used data bus for commercial and transport aircraft. It employs unidirectional transmission of 32-bit words over two twisted pairs. Messages are transmitted at a bit rate of either 12.5 or 100 kilobits per second to other system elements that monitor the bus messages. It supports one transmitter and up to 20 receivers per channel.