A350 Technical Training Manual: Avionics and Data Communication Network

A350 Technical Training Manual

MAINTENANCE COURSE - T1+T2 - RR Trent XWB Integrated Modular Avionics and Avionics Data communication NetworkThis document must be used for training purposes only Under no circumstances should this document be used as a reference It will not be updated. All rights reserved No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of AIRBUS S.A.S. AIRBUS Environmental Recommendation Please consider your environmental responsability before printing this document.AIRBUS A350 TECHNICAL TRAINING MANUAL INTEGRATED MODULAR AVIONICS AND AVIONICS DATA COMMUNICATION NETWORK

Integrated Modular Avionics (IMA) Description (2/3) . 2 Avionics Full Duplex Switched Ethernet (AFDX) Network Description (2/3) 18 V7M15461 - V01T0MM0 MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network

Table of Contents

Oct 06, 2015 Page 1AIRBUS A350 TECHNICAL TRAINING MANUAL INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3)

General Architecture

Conventional avionics are based on the Line Replaceable Units (LRUs) with the same general functions (input acquisition, process and input computing, generation of output), also called resources. These are used to operate their own avionics applications.

The general function of the Integrated Modular Avionics (IMA) is:

• To organize shared resources
• To supply a centralized computing and data communication capability. Some system applications hosted in the same computer (module) can use them.

The advantages are:

• Weight saving (less wiring and boxes)
• Cost reduction.

The IMA contains these modules:

• Core Processing Input/Output Modules (CPIOMs)
• Common Remote Data Concentrators (CRDCs).

CPIOMs

The CPIOM is a computer that can do multiple applications at the same time. V7M15461 - V01T0MM0 - VM42D1IMA003001 Each CPIOM hosts independent applications/functions for A/C systems in the same computing and memory resource. It also supplies an Input/Output (I/O) interface service to other equipment (conversion of non-Avionics Full Duplex Switched Ethernet (AFDX) signals (ARINC, CAN, analog, discrete) into AFDX signals).

CRDCs

The CRDCs collect, convert and exchange data between the AFDX network and the equipment without AFDX capability (most of them are installed out of the avionics compartment, in remote areas), i.e. sensors, switches, potentiometers, cockpit panels, etc. communicating through ARINC, CAN, analog or discrete means.

The CRDCs host no avionics application.

Dialog through AFDX, CAN, ARINC, discrete and analog

The CPIOMs and the CRDCs dialog through the AFDX network. They use a protocol equivalent to Ethernet communication technology, which is adapted to the aviation constraints (integrity of data, redundancy and reliability). MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 2AIRBUS A350 TECHNICAL TRAINING MANUAL APPLICATION A LRUS FUNCTION A 1 I APPLICATION B I - - FUNCTION B - NON-AFDX - 1 APPLICATION C (ARINC, CAN, ANALOG, DISCRETE) LRU A 1 IMA V - 1 LRU B DOCTOR SAIST LOCKED I I ASIS CPIOM LRU C LRUS NON-AFDX (ARINC, CAN, ANALOG, DISCRETE) AFDX NETWORK AFDX: Avionics Full Duplex Switched Ethernet CAN: Controller Area Network CPIOM: Core Processing Input/Output Module CRDC: Common Remote Data Concentrator IMA: Integrated Modular Avionics LRU: Line Replaceable Unit LRUs GENERAL ARCHITECTURE MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 3 V7M15461 - V01T0MM0 - VM42D1IMA003001 1 1 1 FUNCTION C --- THALES CRDC I CONVENTIONAL AVIONICS IAIRBUS A350 TECHNICAL TRAINING MANUAL INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3)

CPIOM Types

There are two types of CPIOMs:

• Type H (12 units)
• Type J (9 units + 1 optional).

They are different in the definition of their physical interfaces (I/Os): for example, CPIOMs J can generate audio signals (e.g. FWS application function), but CPIOMs H can supply a wider variety of signals.

All CPIOMs are installed in the main avionics compartment.

• CPIOM groups (clusters) There are:
• Three groups (also named clusters) of CPIOMs type H (H3, H4 and H6)
• Four groups of CPIOMs type J (J1, J2, J5 and J7).
• CPIOM identification Each CPIOM is identified by one letter and two digits (e.g. H31):
• The letter gives the CPIOM type: H or J.
• The first digit gives the CPIOM group to which it belongs: from 1 to 7.
• The second digit gives the CPIOM number in this group: from 1 to 4.

CPIOM Interchangeability

• The CPIOM-H and CPIOM-J are not interchangeable because they do not have the same hardware.
• The CPIOMs of the same type and of the same group can be swapped with no other requirement than A/C systems applications uploading.
• The CPIOMs of the same type but of different group can be swapped if their core software is uploaded and if the A/C system applications are uploaded. V7M15461 - V01T0MM0 - VM42D1IMA003001 MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 4AIRBUS A350 TECHNICAL TRAINING MANUAL THALES ChoM. APPLICATION A CPIOM-H3x (H31 TO H34) S APPLICATION B S CPIOM-H4x (H41 TO H44) APPLICATION C LES THA . THAV-0533 MSN0000 8TF433 CPIOM-H6x (H61 TO H64) CPIOM-H THALES CFICAL CPIOM-J1x (J11 TO J12) APPLICATION A SI APPLICATION B CPIOM-J2x (J21 TO J24) S APPLICATION C CPIOM-J5x (J51 & OPTIONAL J52) LES THA MSN00 9TF23 230 CPIOM-J7x (J71 & J72) ---- CPIOM-J CPIOM-H31 -NUMBER IN A DEFINED GROUP -CPIOM GROUP -CPIOM TYPE (H OR J) V7M15461 - V01T0MM0 - VM42D1IMA003001 - TWO TYPES OF CPIOM: H & J. - CPIOM-H AND CPIOM-J ARE NOT INTERCHANGEABLE (DIFFERENT HARDWARE). - CPIOMs FROM THE SAME TYPE & GROUP >>> SWAP POSSIBLE >>> NO CORE S/W LOADING NECESSARY. - CPIOMS OF THE SAME TYPE BUT DIFFERENT GROUP >>> SWAP POSSIBLE >>> CORE S/W LOADING NECESSARY. - FOR MOST CPIOM INSTALLATION TASKS, THE UPLOADING OF AVIONICS APPLICATIONS IS ALSO NECESSARY. S/W: Software CPIOM TYPES MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 5AIRBUS A350 TECHNICAL TRAINING MANUAL INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3)

CPIOM Internal Architecture

A CPIOM has the following architecture:

• Hardware
• One computation part, which hosts the Central Processing Unit (CPU) and I/O resources for AFDX network interface.
• One I/O part, which receives, processes and manages the non-AFDX I/Os. Note that the two parts (electronic cards) are interconnected.
• Not field-loadable software
• The resident software, which is a part of the computation function.
• CPIOM module software-field loadable Each CPIOM has some field loadable software:
• One configuration table, which defines allocation of memory, CPU and I/Os resources to the applications.
• One configuration table for resource BITE, which is applicable to the BITE messages sent to the CMS. The resource BITE perimeter is limited to failure or damage that occurs within the CPIOM.
• One core software (BITE included), which is an operating system used by the applications to get access to the CPIOM resources (CPU, memory, I/Os) and to monitor the hardware.
• System field-loadable software (A/C system applications/database) The CPIOMs also host A/C system functions that:
• Contain one or some A/C system applications
• Can include one or more related databases. Two A/C system applications hosted in the same CPIOM, which want to communicate with each other, must do it through the AFDX network. The CPIOM field loadable-software must be loaded onto the CPIOM in a specific sequence (see maintenance procedure). The CPIOM can be tested from the OMS if all software are uploaded before in accordance with maintenance procedures. V7M15461 - V01T0MM0 - VM42D1IMA003001 MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 6AIRBUS A350 TECHNICAL TRAINING MANUAL SYSTEM X SYSTEM Y SYSTEM Z CPIOM APPLICATIONS (BITE INCLUDED) APPLICATIONS (BITE INCLUDED) APPLICATIONS (BITE INCLUDED) SYSTEM SOFTWARE DATABASE, ... DATABASE, ... FIELD LOADABLE SOFTWARE CONFIGURATION TABLE RESOURCE BITE CONFIGURATION TABLE CORE SOFTWARE (BITE INCLUDED) CPIOM MODULE SOFTWARE SOFTWARE HARDWARE COMPUTATION (CPU) INPUT/OUTPUT RESIDENT SOFTWARE AFDX END SYSTEM CPIOM FUNCTIONS: - DATA ACQUISITION, CONCENTRATION AND INPUT/OUTPUT CONVERTER AFDX NETWORK A/C SYSTEMS - HOSTS AVIONICS APPLICATIONS AND COMMON RESOURCES CPU: Central Processing Unit - AFDX GATEWAY. CPIOM INTERNAL ARCHITECTURE MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 7 V7M15461 - V01T0MM0 - VM42D1IMA003001 -AIRBUS A350 TECHNICAL TRAINING MANUAL INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3)

CRDC Types

The CRDCs (29 units) are divided into two types:

• CRDC-A (15 units)
• CRDC-B (14 units).

The CRDCs are fully interchangeable without software upload if they belong to the same type. The CRDC-A and CRDC-B have different physical interfaces.

The CRDCs are installed in pressurized areas along the A/C. V7M15461 - V01T0MM0 - VM42D1IMA003001 MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 8AIRBUS A350 TECHNICAL TRAINING MANUAL CRDCs A (x5) CRDCs A (x4) CRDCs A (x2) 118076 CRDCs B (x4) CRDCS B (x3) CRDCs B (x4) CRDCs B (x3) CRDCS A (x2) CRDCs A (x2) DIEHL NOT FOR FLIGHI V7M15461 - V01T0MM0 - VM42D1IMA003001 CRDC 2 TYPES OF CRDC: A (x15) & B (x14) CRDC THAT BELONGS TO THE SAME TYPE CAN BE SWAPPED WITHOUT SOFTWARE UPLOAD. CRDC TYPES MAINTENANCE COURSE - T1+T2 - RR Trent XWB 42 - Integrated Modular Avionics and Avionics Data communication Network INTEGRATED MODULAR AVIONICS (IMA) DESCRIPTION (2/3) Oct 07, 2015 Page 9