EN 4660-003:2019

Aerospace series - Modular and Open Avionics Architectures - Part 003: Communications/Network

The purpose of this MOAA standard is to define a set of open architecture standards,
concepts & guidelines for Advanced Avionics Architectures (A3).
The three main goals for the MOAA Standards are:
— Reduced life cycle costs,
— Improved mission performance,
— Improved operational performance.
The MOAA standards are organised as a set of documents including:
— A set of agreed standards that describe, using a top down approach, the Architecture overview to all
interfaces required to implement the core within avionics system,
— The guidelines for system implementation through application of the standards.
This standard details the functionality and principle interfaces of an EN 4660 compliant network to
ensure the interoperability of Common Functional Modules and design guidelines to assist in
implementation of such a network.
The purpose of this standard is to establish by means of well defined interfaces and functionality, a
network design that is technology transparent and that is open to a multi-vendor market. Therefore,
specific data communication network topology, protocols and technologies are not identified in this
document.
Although the physical organisation and implementation of the network shall remain the System
Designers choice, in accordance with the best use of the current technology, it is necessary to define
interfaces and parameter sets in order to achieve a logical definition of the network with a defined
functionality. This definition includes:
— The generic functionality applicable to all networks.
— The logical interfaces to the Operating System and Module Support Layers.
— Optionally the physical interfaces to the Common Functional Modules (CFM).
This document identifies the principle interfaces for the Network, in Clause 4, and where appropriate,
provides requirements on network parameters to be defined.

Luft- und Raumfahrt - Modulare und offene Avionikarchitekturen - Teil 003: Kommunikation/Netzwerk

Der Zweck dieser MOAA-Norm ist, eine Reihe von Standards, Konzepten und Leitlinien für offene A3-Architek¬turen (en: Advanced Avionic Architectures, A3) festzulegen.
Die drei Hauptzielsetzungen der MOAA-Normen sind
- die Senkung der Kosten während des Lebenszyklus,
- die Verbesserung der Leistung bei der Erfüllung der Mission und
- die Verbesserung der Leistung während des Betriebs.
Die MOAA-Normen sind als eine Reihe von Dokumenten organisiert, die Folgendes umfassen:
- eine Reihe von vereinbarten Standards, die mit Hilfe eines Top-down-Ansatzes den Überblick über die Architektur aller Schnittstellen beschreiben, die zur Implementierung des Kerns innerhalb von Avioniksystemen erforderlich sind;
- die Leitlinien für die Systemimplementierung durch Anwendung der Standards.
Bild 1 zeigt einen Überblick über die Dokumentenhierarchie (das vorliegende Dokument ist in diesem Bild hervorgehoben):
[Bild]
Diese Norm behandelt die Funktionalität und die Hauptschnittstellen eines EN 4660 entsprechenden Netzwerks, mit denen die Interoperabilität von Standardfunktionsmodulen sichergestellt werden soll; darüber hinaus enthält sie Designleitlinien zur Unterstützung bei der Implementierung eines derartigen Netzwerks.
Der Zweck dieses Dokuments ist, mittels wohl definierter Schnittstellen und Funktionalitäten ein Netzwerk¬design festzulegen, das technologisch transparent und für einen Markt mit einer Vielzahl von Herstellern offen ist. Daher sind die spezifischen Topologien, Protokolle und Technologien des Daten-kommunikations¬netzes in diesem Dokument nicht benannt.
Obwohl die physikalische Organisation und Implementierung des Netzwerks dem Systemdesigner überlas-sen bleiben muss, ist es im Sinne der wirkungsvollsten Nutzung der derzeitigen Technologien notwendig, Schnittstellen und Parametersätze zu definieren, um eine logische Definition des Netzwerks mit einer definierten Funktionalität zu erhalten. Diese Definition umfasst:
- die für alle Netzwerke geltende generische Funktionalität,
- die logischen Schnittstellen zum Betriebssystem und zu den Modulunterstützungsschichten und
- optional die physikalischen Schnittstellen zu den Standardfunktionsmodulen (en: Common Functional Modules, CFM).
Das vorliegende Dokument benennt in Abschnitt 4 die Hauptschnittstellen für das Netzwerk und gibt gege-benenfalls Anforderungen an die zu definierenden Netzwerkparameter an.

Série aérospatiale - Architectures Avioniques Modulaires et Ouvertes - Partie 003 : Communication/Réseau

Aeronavtika - Modularne in odprte letalske elektronske arhitekture - 003. del: Komunikacije/omrežje

Namen standarda za modularno in odprto letalsko elektronsko arhitekturo (MOAA) je določiti nabor standardov za odprto arhitekturo, konceptov ter smernic za napredne letalske elektronske arhitekture (A3).
Trije glavni cilji za standard MOAA so:
– zmanjšani stroški življenjskega cikla,
– izboljšani cilji misije,
– izboljšano operativno delovanje.
Standardi MOAA so organizirani kot nabor dokumentov, ki vključujejo:
– nabor dogovorjenih standardov, ki s pristopom »od zgoraj navzdol« opisujejo pregled arhitekture za vse vmesnike, ki morajo uvesti jedro v sistemih letalske elektronike,
– smernice za uvedbo sistema z uporabo standardov.
Ta standard podrobno navaja funkcionalnost in glavne vmesnike omrežja, ki je skladno s standardom EN 4660, za zagotavljanje interoperabilnosti skupnih funkcijskih modulov in oblikovanje smernic za pomoč pri uvedbi takega omrežja.
Namen tega standarda je na podlagi dobro opredeljenih vmesnikov in funkcionalnosti vzpostaviti načrt omrežja, ki je tehnološko transparenten in odprt za trg z več ponudniki. Zato v tem dokumentu topologija, protokoli in tehnologije komunikacijskega podatkovnega omrežja niso opredeljeni.
Čeprav mora dejanska organizacija in uvedba omrežja ostati izbira načrtovalca sistema, je treba v skladu z najboljšo uporabo trenutne tehnologije določiti nabore vmesnikov in parametrov, da bi dosegli logično definicijo omrežja z določeno funkcionalnostjo. Ta definicija zajema:
– generično funkcionalnost, ki se uporablja za vsa omrežja,
– logične vmesnike za operacijski sistem in podporne plasti modula,
– izbirno še fizične vmesnike za skupne funkcijske module (CFM).
Ta dokument opredeljuje glavne vmesnike za omrežje, v točki 4 in kjer je to primerno, podaja zahteve za parametre omrežja, ki jih je treba določiti.

General Information

• Status: Published
• Publication Date: 20-Aug-2019
• Withdrawal Date: 28-Feb-2020
• ICS: 49.090 - On-board equipment and instruments
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 1/S 2 - MOAA Modular and Open Avionics Architecture
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Aug-2019
• Completion Date: 21-Aug-2019
• Ref Project: SIST EN 4660-003:2019 - Aerospace series - Modular and Open Avionics Architectures - Part 003: Communications/Network

Relations

• Replaces: EN 4660-003:2011 - Aerospace series - Modular and Open Avionics Architectures - Part 003: Communications/Network
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2019
Nadomešča:
SIST EN 4660-003:2011
Aeronavtika - Modularne in odprte letalske elektronske arhitekture - 003. del:
Komunikacije/omrežje
Aerospace series - Modular and Open Avionics Architectures - Part 003:
Communications/Network
Luft- und Raumfahrt - Und offene Avionikarchitekturen Modulare - Teil 003:
Kommunikation/Netzwerk
Série aérospatiale - Architectures Avioniques Modulaires et Ouvertes - Partie 003 :
Communication/Réseau
Ta slovenski standard je istoveten z: EN 4660-003:2019
ICS:
35.100.01 Medsebojno povezovanje Open systems
odprtih sistemov na splošno interconnection in general
49.090 Oprema in instrumenti v On-board equipment and
zračnih in vesoljskih plovilih instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4660-003
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2019
EUROPÄISCHE NORM
ICS 49.090 Supersedes EN 4660-003:2011
English Version
Aerospace series - Modular and Open Avionics
Architectures - Part 003: Communications/Network
Série aérospatiale - Architectures Avioniques Luft- und Raumfahrt - Modulare und offene
Modulaires et Ouvertes - Partie 003 : Avionikarchitekturen - Teil 003:
Communication/Réseau Kommunikation/Netzwerk
This European Standard was approved by CEN on 5 November 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4660-003:2019 E
worldwide for CEN national Members.

Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 5
3 Terms and definitions and Abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
4 Network Definition . 7
4.1 Overview . 7
4.2 Specific Network Requirements . 7
4.3 Module Physical Interface . 9
4.4 Optional Module Logical Interface . 9
4.5 Optional MLI - Network Properties . 10
4.5.1 General . 10
4.5.2 Data Formats . 10
4.5.3 Data Link properties . 11
4.5.4 Control Functions . 12
4.5.5 Monitoring Functions . 12
4.5.6 Transfer Protocols . 13
Annex A (informative) Standard Evolution Form . 15

Figures
Figure 1 — MOAA Standard Documentation Hierarchy . 4
Figure 2 — MOAA Communication Interfaces . 13

Tables
Table 1 — Architecture Requirements . 7
Table 2 — System Requirements . 8
Table A.1 — Main changes to previous editions . 15

European foreword
This document (EN 4660-003:2019) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2020, and conflicting national standards
shall be withdrawn at the latest by February 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 4660-003:2011.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
The purpose of this MOAA standard is to define a set of open architecture standards,
concepts & guidelines for Advanced Avionics Architectures (A3).
The three main goals for the MOAA Standards are:
— Reduced life cycle costs,
— Improved mission performance,
— Improved operational performance.
The MOAA standards are organised as a set of documents including:
— A set of agreed standards that describe, using a top down approach, the Architecture overview to all
interfaces required to implement the core within avionics system,
— The guidelines for system implementation through application of the standards.
The document hierarchy is given in Figure 1: (in this figure the document is highlighted)

Figure 1 — MOAA Standard Documentation Hierarchy
This standard details the functionality and principle interfaces of an EN 4660 compliant network to
ensure the interoperability of Common Functional Modules and design guidelines to assist in
implementation of such a network.
The purpose of this standard is to establish by means of well defined interfaces and functionality, a
network design that is technology transparent and that is open to a multi-vendor market. Therefore,
specific data communication network topology, protocols and technologies are not identified in this
document.
Although the physical organisation and implementation of the network shall remain the System
Designers choice, in accordance with the best use of the current technology, it is necessary to define
interfaces and parameter sets in order to achieve a logical definition of the network with a defined
functionality. This definition includes:
— The generic functionality applicable to all networks.
— The logical interfaces to the Operating System and Module Support Layers.
— Optionally the physical interfaces to the Common Functional Modules (CFM).
This document identifies the principle interfaces for the Network, in Clause 4, and where appropriate,
provides requirements on network parameters to be defined.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 4660-001, Aerospace series — Modular and Open Avionics Architectures — Part 001: Architecture
EN 4660-002, Aerospace series — Modular and Open Avionics Architectures — Part 002: Common
Functional Modules
EN 4660-004, Aerospace series — Modular and Open Avionics Architectures — Part 004: Packaging
EN 4660-005, Aerospace series — Modular and Open Avionics Architectures — Part 005: Software
ISO/IEC 7498-1, Open System Interconnect Basic Reference Model
3 Terms and definitions and Abbreviations
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 Terms and definitions
Use of “shall”, “should” and “may” within the standards observe the following rules:
— The word SHALL in the text expresses a mandatory requirement of the standard.
— The word SHOULD in the text expresses a recommendation or advice on implementing such a
requirement of the standard. It is expected that such recommendations or advice will be followed
unless good reasons are stated for not doing so.
— The word MAY in the text expresses a permissible practice or action. It does not express a
requirement of the standard.
3.2 Abbreviations
APOS Application to Operating System [interface]
ASAAC Allied Standard Avionics Architecture Council
BER Bit Error Rate
CFM Common Functional Module
COTS Commercial Off The Shelf
DMA Direct Memory Access
Gbps Giga bits per second
GLI GSM Logical Interface
GSM International Electrotechnical Commission
IEC Generic System Manager
IMA Integrated Modular Avionics
ISO International Standards Organisation
ISR Interrupt Service Routine
LCC Life Cycle Cost
Mbps Mega bits per second
MLI Module Logical Interface
MOS Module Support Layer to Operating System [interface]
MPI Module Physical Interface
MMU Memory Management Unit
MRM Module Resource Manager
MSL Module Support Layer
MSU Module Support Unit
NIU Network Interface Unit
NSM Network Support Module
OLI OS Logical Interface
OS Operating System
OSI Open Systems Interconnect
OSL Operating System Layer
QoS Quality of Service
RTBP Run Time Blueprint
SMBP System Management to Blueprint [interface]
SMLI System Management Logical Interface
SMOS System Management to Operating System [interface]
TC Transfer Connection
TLS Three-Layer Stack
VC Virtual Channel
4 Network Definition
4.1 Overview
The communications over an EN 4460 compatible network are defined and managed by a set of ARINC
or EN 4660-005 interfaces. It shall be noted that this EN 4660 network standard is independent of
specific technologies and therefore the data communication network topology, protocols and
technologies are not defined by this document. This specification defines parameters which are need to
be specified for EN 4660 network design.
4.2 Specific Network Requirements
There are a number of specific network requirements having an impact on the network design. These
are shown as architectural requirements in Table 1 and system requirements in Table 2.
Table 1 — Architecture Requirements
Title Description
Certification The EN 4660 network shall be certifiable in military and civil avionics
environments
Open standards No proprietary standards, processes or components shall be specified
Scalability The network shall be scaleable for all system sizes
Network connections The network should support a high level of inter-connectivity
Network connections The network should support mi
...