Railway applications - Driver's cab train display controller (TDC) - Part 1: General architecture

In accordance with the ERTMS/ETCS specifications, Subset 121, UIC 612 leaflet, ERA_ERTMS_015560 document, EN 50126 and EN 61375 series requirements, this Technical Report describes the Train Display System (TDS) in the driver’s cab, and the link between the TDS/TDC and some of its interfaces (Blue box and blue links only):
Figure 1 - Functional architecture
The scope of this document is to define the functional architecture around the TDC.
This Technical Report excludes the following items:
-   Communication protocols (e.g. EN 61375 series);
-   Ergonomic aspects;
-   Interface with ETCS (Subset 121);
-   Train functions;
-   GSM-R EIRENE functions;
-   Use of the displays as terminals for maintenance purpose.

Bahnanwendungen - Display-Steuereinheit für Führerräume - Teil 1: Allgemeine Architektur

Applications ferroviaires - Contrôleur d'écrans de cabine (TDC) - Partie 1 : Architecture générale

Železniške naprave - Krmilnik vlakovnega prikazovalnika v strojevodjevem prostoru - 1. del: Splošna arhitektura

V skladu s specifikacijami ERTMS/ETCS, podsklopom 121, priporočilom UIC 612, dokumentom ERA_ERTMS_015560 ter zahtevami skupine standardov EN 50126 in EN 61375 to tehnično poročilo opisuje sistem vlakovnega prikazovalnika (TDS) v strojevodjevem prostoru in povezavo med TDS/TDC in nekaterimi njegovimi vmesniki (samo modro ohišje in modre povezave):
Slika 1 – Funkcionalna arhitektura
Namen tega dokumenta je opredelitev funkcionalne arhitekture za TDC.
To tehnično poročilo izključuje naslednje postavke:
– komunikacijski protokoli (npr. skupina standardov EN 61375);
– ergonomski vidiki;
– vmesnik z ETCS (podsklop 121);
– funkcije vlaka;
– funkcije GSM-R EIRENE;
– uporaba prikazovalnikov kot terminalov za vzdrževanje.

General Information

Status
Published
Publication Date
07-Jan-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Aug-2018
Due Date
13-Oct-2018
Completion Date
08-Jan-2019

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SLOVENSKI STANDARD
SIST-TP CLC/TR 50542-1:2019
01-februar-2019
1DGRPHãþD
SIST-TP CLC/TR 50542-1:2014
Železniške naprave - Krmilnik vlakovnega prikazovalnika v strojevodjevem
prostoru - 1. del: Splošna arhitektura

Railway applications - Driver's cab train display controller (TDC) - Part 1: General

architecture
Bahnanwendungen - Display-Steuereinheit für Führerräume - Teil 1: Allgemeine
Architektur

Applications ferroviaires - Contrôleur d'écrans de cabine (TDC) - Partie 1 : Architecture

générale
Ta slovenski standard je istoveten z: CLC/TR 50542-1:2018
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
45.020 Železniška tehnika na Railway engineering in
splošno general
SIST-TP CLC/TR 50542-1:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CLC/TR 50542-1:2019
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SIST-TP CLC/TR 50542-1:2019
TECHNICAL REPORT CLC/TR 50542-1
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
May 2018
ICS 35.240.60; 45.020 Supersedes CLC/TR 50542-1:2014
English Version
Railway applications - Driver's cab train display controller (TDC)
- Part 1: General architecture

Applications ferroviaires - Contrôleur d'écrans de cabine Bahnanwendungen - Display-Steuereinheit für Führerräume

(TDC) - Partie 1 : Architecture générale - Teil 1: Allgemeine Architektur
This Technical Report was approved by CENELEC on 2018-02-26.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. CLC/TR 50542-1:2018 E
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Contents Page

European foreword .............................................................................................................................................3

Introduction .........................................................................................................................................................4

1 Scope ......................................................................................................................................................5

2 Normative references ............................................................................................................................5

3 Terms and definitions ...........................................................................................................................6

4 Symbols and abbreviations ..................................................................................................................8

5 Functions ................................................................................................................................................9

5.1 Definitions ..............................................................................................................................................9

5.1.1 General ....................................................................................................................................................9

5.1.2 Button management ..............................................................................................................................9

5.1.3 Indicator management ..........................................................................................................................9

5.1.4 Text management ..................................................................................................................................9

5.1.5 Sound management...............................................................................................................................9

5.1.6 Data Entry management ..................................................................................................................... 10

5.1.7 Data Confirmation management ....................................................................................................... 10

5.1.8 Dataview management ....................................................................................................................... 10

5.1.9 Video management ............................................................................................................................. 10

5.1.10 Window management ......................................................................................................................... 10

5.1.11 Status management ............................................................................................................................ 10

5.1.12 Display Parameters management ..................................................................................................... 11

5.2 Delays .................................................................................................................................................. 11

6 Communication ................................................................................................................................... 11

7 Safety targets ...................................................................................................................................... 11

8 Certification/validation ....................................................................................................................... 12

9 TDC general description .................................................................................................................... 12

9.1 General ................................................................................................................................................. 12

9.2 Information destination ...................................................................................................................... 12

9.3 Second source .................................................................................................................................... 13

9.4 TDC and display maintenance and LCC ........................................................................................... 13

9.5 Safety and reliability targets .............................................................................................................. 14

9.6 TDC display redundancy management ............................................................................................ 14

9.7 TDC recommended architecture ....................................................................................................... 14

9.7.1 Constraints .......................................................................................................................................... 14

9.7.2 TDC architecture examples ............................................................................................................... 15

Annex A (informative) Relations between the functions described in the documents of the

CLC/TR 50542 series .......................................................................................................................... 18

Bibliography ..................................................................................................................................................... 20

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European foreword

This document (CLC/TR 50542-1:2018) has been prepared by CLC/TC 9X “Electrical and electronic

applications for railways”.
This document supersedes CLC/TR 50542-1:2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission and

the European Free Trade Association.

The significant technical changes with respect to CLC/TR 50542-1:2014 are listed below:

— The Scope has been shortened and synthetized;
— Some terms, definitions and missing abbreviations have been added;

— For consistency with CLC/TR 50542-2:2016 and CLC/TR 50542-3:2016, missing functions have been

added and definition of functions have been improved to be consistent;

— Delays and failure modes have been deleted because they depend on the technical implementation of

the system;
— Certification/validation section has been adapted;

— Informative Annex A has been adapted to be consistent with CLC/TR 50542-2:2016 and CLC/TR 50542-

3:2016.
This document is the first one of a series of three documents:
— this document;

— CLC/TR 50542-2 Railway applications — Driver's cab Train Display Controller (TDC) — Display systems

FIS;

— CLC/TR 50542-3 Railway applications — Driver's cab Train Display Controller (TDC) — Other train

systems FIS.

— These documents shall not be interpreted as standards but as studies on the future view of the system.

They do not describe an existing solution for the Train Display System (TDS).
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Introduction

The purpose of this Technical Report is to propose harmonization for communication between the displays on

the driver's desk and the train onboard systems.
The need for this harmonization has grown out of several trends.

One trend is that the rolling stock is being computerized more and more, enabling sophisticated functions

within various train onboard systems.

Furthermore, the driver’s desk of such rolling stock is built around one or several computerized displays.

These allow the driver to interact with rolling stock functions and train onboard systems. The user interfaces

are typically user friendly, featuring e.g. graphics and colours.

In case of degraded situation (display failure) and with several displays available on the desk, it should be

possible to relocate important information to a display that is still working. This improves operational

availability.
A second trend is the ongoing harmonization of the interfaces on the train.
A third trend is that a European market is opened for onboard equipment.

Traditionally, some onboard equipment are linked to a country and/or to a rolling stock type. This has

effectively limited the rolling stock to operate within a limited number of countries. The two trends above are

useful to reduce this limitation.

The combination of the above trends leads to the conclusion that during train operation, train onboard systems

need to have access to the displays on the desk. Furthermore, it is desirable to maintain the advantages of

multi-display installations, allowing the ability to switch to another display in case of display failure. Thus a

certain level of integration and harmonized communication is required.

Another motivation for this Technical Report is related to the Life-Cycle Cost. The recommendations written

here support the easier replacement of displays and desk equipment during the lifetime of the vehicle,

independently of the supplier.

In this document the Other Train Systems (OTS), the displays and the Train Display Controller (TDC) are

considered only regarding their functionalities and not as physical devices.

The CLC/TR 50542 series are not standards but studies on the future view of the system. They do not

describe an existing solution for the Train Display System (TDS).
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1 Scope

In accordance with the ERTMS/ETCS specifications, Subset 121, UIC 612 leaflet, ERA_ERTMS_015560

document, EN 50126 and EN 61375 series requirements, this Technical Report describes the Train Display

System (TDS) in the driver’s cab, and the link between the TDS/TDC and some of its interfaces (Blue box and

blue links only):
Figure 1 — Functional architecture

The scope of this document is to define the functional architecture around the TDC.

This Technical Report excludes the following items:
• Communication protocols (e.g. EN 61375 series);
• Ergonomic aspects;
• Interface with ETCS (Subset 121);
• Train functions;
• GSM-R EIRENE functions;
• Use of the displays as terminals for maintenance purpose.
2 Normative references
There are no normative references in this document.
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3 Terms and definitions
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:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
Driver Machine Interface
display used to give information to the driver

Note 1 to entry: Information is carried through this interface in the form of visual, acoustic and tactile (driver’s pressing

of buttons).

Note 2 to entry: It contains the hardware and software means to support or to inform the driver

3.2
button event
pressing or releasing a button
3.3
button

operating element for interaction with the cab display (hard key, soft key, sensitive area)

[SOURCE: EN 16186-3:2016, 3.5]
3.4
cab display
hardware device or system that shows text and/or graphic information to the user
3.5
hard key
physical key with permanent marking outside the screen area

Note 1 to entry: This permanent marking may be alpha and/or numeric and/or a symbol.

[SOURCE: EN 16186-3:2016, 3.18]
3.6
Indicator

element designed to draw attention to train onboard system status which requires a response

3.7
sensitive area

enabled area on a touchscreen on which a physical action is possible in order to give input to the display

3.8
soft key

context-dependent key consisting of a combination of a hard key and an associated screen label (text or

symbol)
Note 1 to entry: This key is for multifunctional use.
[SOURCE: EN 16186-3:2016, 3.29]
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3.9
Label
symbol or text indication on or close to an indicator or a button
[SOURCE: EN 16186-3:2016, 3.20, modified – The example has been removed]
3.10
Train Display Controller
(TDC)

equipment used to manage information between displays on the driver's desk and the train

Note 1 to entry: TDC is called DCU (Display Control Unit) in UIC 612 leaflet series. See Bibliography.

3.11
Train Display System
(TDS)
TDS consists of the TDC and the displays.

Note 1 to entry: Dotted line in Figure 1 — Functional architecture, represents the boundary between driver and

ETCS/OTS
3.12
Display

hardware device or system that shows text and/or graphic information to the user combined with input device

Note 1 to entry: The sounds may be played by a separated sound generator
Note 2 to entry: It may include the sound interface

[SOURCE: EN 16186-3:2016, 3.8; modified - “combined with input device” has been added at the end of the

definition]
3.13
Other Train Systems

train onboard systems interfaced with the TDC excluding ETCS/STM onboard, class B ATP systems, and the

displays

EXAMPLE Trainborne systems could be the train systems interacting with the driver through the TDC (e.g. brake

system, HVAC systems, traction system, CCTV).

Note 1 to entry: The interface between the TDC and the ETCS/STM onboard is described in Subset 121 (see

Bibliography).

Note 2 to entry: The interface between the TDC and the displays is described in CLC/TR 50542-2.

[SOURCE: CLC/TR 50542-3:2016, 3.1, modified – The note 3 to entry has been added]

Note 3 to entry: To reach the goal of TDC interchangeability including some already existing class B ATP systems not

using the STM interface as specified in the CCS TSI, the interfaces of these systems should be standardized.

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4 Symbols and abbreviations

For the purposes of this document, the following symbols and abbreviations apply.

CAN Control Area Network
CCD Control Command Display
CCS Control Command Signalling
CCTV Close Circuit TV
CPU Central Processor Unit
EIRENE European Integrated Railway Radio. Enhanced Network
ERTMS European Rail Traffic Management System
ETCS European Train Control System
ETD Electronic Timetable Display
FMEA Failure Mode and Effects Analysis
FIS Functional Interface Specification
FSV Function/Task Supervision
GSM-R Global System for Mobile communications - Railways
HW Hardware
LAN Local Area Network
LCC Life Cycle Cost
MTBF Mean Time Between Failures
MVB Multipurpose Vehicle Bus
OTS Other Train Systems
SIL Safety Integrity Level
STM Specific Transmission Module
SW Software
TDC Train Display Controller
TDD Technical and Diagnostic Display
TDS Train Display System
THR Tolerable Hazard Rate
TRD Train Radio Display
TSI Technical Specification for Interoperability
UIC Union Internationale des Chemins de fer (International Union of Railways)
UML Unified Modelling Language
USB Universal Serial Bus
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5 Functions
5.1 Definitions
5.1.1 General

The functions described in this document are managed by the TDC as defined in the scope. The following

subclauses give the list of these functions.

The functions below should be supported by the interfaces between the TDC and the displays, and between

the TDC and the OTS.
5.1.2 Button management

Button request: the train onboard system requests the display to give the driver access to the related button.

Button Deletion Request: the train onboard system requests the display to delete the related button.

Button event report: the display reports button event to the train onboard system.

Ack: the display reports (driver) acknowledgement to the TDC. Ack can be performed by acknowledgement of

a text message, or by pressing a button, depending on the context.

The button management is covered by the function Display Button in CLC/TR 50542-2 and by the functions

State and Command in CLC/TR 50542-3. See Annex A.
5.1.3 Indicator management
Indicator request: the train onboard system requests
...

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