ISO 21806-2:2020

INTERNATIONAL ISO
STANDARD 21806-2
First edition
2020-09
Road vehicles — Media Oriented
Systems Transport (MOST) —
Part 2:
Application layer
Véhicules routiers — Système de transport axé sur les médias —
Partie 2: Couche d’application
Reference number
©
ISO 2020
© ISO 2020
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Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 3
4.1 Symbols . 3
4.2 Abbreviated terms . 3
5 Conventions . 4
6 APP — Application . 4
6.1 APP — Device model . 4
6.2 APP — Node kinds . 5
6.2.1 APP — MOST nodes . 5
6.2.2 APP — Remote-controlled nodes . 6
6.2.3 APP — Listen-only nodes . 6
6.3 APP — Function block . 6
6.3.1 APP — General . 6
6.3.2 APP — FBlock library . 7
6.3.3 APP — Controller and FBlock . 7
6.4 APP — Functions. 8
6.4.1 APP — Overview . 8
6.4.2 APP — Methods . 9
6.4.3 APP — Properties .11
6.5 APP — Events and notification .12
6.5.1 APP — Events .12
6.5.2 APP — Notification .12
6.6 APP — Notification mechanisms.13
6.6.1 APP — General .13
6.6.2 APP — Notification function.14
6.6.3 APP — Implicit notification .15
6.6.4 APP — Automatic notification .15
6.6.5 APP — Errors in the context of the notification function .15
6.6.6 APP — No valid values or property failure .15
6.6.7 APP — Reactions on Configuration.Status events .16
6.7 APP — Requesting FBlock information .16
6.7.1 APP — Function FBlockIDs .16
6.7.2 APP — Function FktIDs.17
6.7.3 APP — Extended FBlock identification .17
6.8 APP — Registry management .18
6.8.1 APP — General .18
6.8.2 APP — Central registry state .19
6.8.3 APP — NetworkMaster .22
6.8.4 APP — NetworkSlave .33
6.9 APP — Network wake-up, startup, and shutdown .40
6.9.1 APP — General .40
6.9.2 APP — Network wake-up and startup .41
6.9.3 APP — Network shutdown .41
6.9.4 APP — Device shutdown .43
6.10 APP — Connection management for streaming data .45
6.10.1 APP — Service for streaming data.45
6.10.2 APP — Source and sink information .46
6.10.3 APP — Streaming connections .48
6.10.4 APP — Compensating MOST network delay .54
6.11 APP — Diagnosis .54
6.11.1 APP — FBlock configuration status information .54
6.11.2 APP — Shutdown reason .56
6.11.3 APP — Shutdown reason analysis .56
6.11.4 APP — Ring break diagnosis .57
6.11.5 APP — Network diagnosis .57
6.12 APP — Error handling .58
6.12.1 APP — General .58
6.12.2 APP — Handling overload in a message receiver .58
6.12.3 APP — Over-temperature management .59
6.13 APP — Timing definitions .62
6.13.1 APP — Definitions .62
6.13.2 APP — NetworkMaster communication .62
6.13.3 APP — PowerMaster communication .66
7 AL — Application layer .68
7.1 AL — Structure of MOST messages .68
7.2 AL — Addressing .68
7.2.1 AL — Overview .68
7.2.2 AL — 16-bit addressing .69
7.2.3 AL — 48-bit addressing (Ethernet MAC address) .70
7.3 AL — Function block identifier (FBlockID) .70
7.4 AL — Instance identifier (InstID) .73
7.4.1 AL — Distinction of FBlock instances .73
7.4.2 AL — Uniqueness of functional addresses .73
7.4.3 AL — Assigning InstID .73
7.4.4 AL — InstID of NetBlock FBlock.73
7.4.5 AL — InstID of NetworkMaster FBlock .
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