GB/T 28029.2-2020Electronic railway equipment - Train communication network (TCN) - Part 2-1: Wire Train Bus (WTB) (English PDF)

Foreword

GB/T 28029 "Train Communication Network (TCN) for Rail Transit Electronic Equipment" is divided into the following 12 parts.

--- Part 1. Basic structure;

--- Part 2-1. Stranded Train Bus (WTB);

--- Part 2-2. Conformance Test of Wire Train Bus (WTB)

--- Part 2-3. TCN Communication Protocol;

--- Part 2-4. TCN Application Specification;

--- Part 2-5. Ethernet Train Backbone (ETB);

--- Part 2-6. Vehicle-ground communication;

--- Part 2-7. Radio-based Wireless Train Backbone Network (WLTB);

--- Part 3-1. Multifunctional Vehicle Bus (MVB);

--- Part 3-2. Multi-function vehicle bus (MVB) conformance test;

--- Part 3-3. CANopen Marshalling Network (CCN);

--- Part 3-4. Ethernet Marshalling Network (ECN).

This part is Part 2-1 of GB/T 28029.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces the first part of GB/T 28029.1-2011 "Train Bus for Traction Electrical Equipment Part 1. Train Communication Network"

Chapter 2 "Real-time Protocol", Chapter 4 "Stranded Train Bus (WTB)" and Chapter 5 "Train Network Management" (except 5.3.3 and 5.4.3) etc.

Content, compared with GB/T 28029.1-2011, the main technical changes are as follows.

--- Modified the content of "Scope" (see Chapter 1, Version 1.1 of.2011).

--- Modify the "normative reference documents" (see Chapter 2, version 1.2 of.2011).

--- Modify "terms, definitions, abbreviations and conventions" (see Chapter 3,.2011 edition 1.3, 1.4, 1.5).

--- Modify the "TCNWTB device configuration options" figure (see Figure 8,.2011 version of Figure 7).

--- Modify the "resistor load value of the heavy load test circuit in the transmitter test circuit diagram from" 0.42Rt "to" 0.75Rt "(see Figure 24,

(Figure 128 of the.2011 edition).

--- Modify the "characteristic period of node request, expressed as 2n times of the basic period T_bp. N = 0 ~ 128" is "the characteristic of node request

The sign period is expressed as 2n times the basic period T_bp. n = 0 ~ 7. "(see 5.5.2.2, 4.7.2.1 of the.2011 edition).

--- Modified the meaning of "LS_REGULAR_SLAVE. the node is in REGULAR_SLAVE state or TEACHING_

The meaning of "MASTER status" is "LS_REGULAR_SLAVE. the node is in the conventional slave device or the node is in the learning slave

Status "(see Table 20, 4.8.4.2.2 of the.2011 edition).

--- Added "gateway station" related content (see 6.3.2.4).

--- Modified "/ * bit0 * /" to "/ * bit7 * /" and "/ * bit1 * /" to "/ * bit6 * /" (see 6.3.10.2.4,.2011 edition

2.3.10.2.4).

--- Added "application layer" related content (see Chapter 7).

--- Modify "g0 ~ g7, g8 ~ g15, etc." from ascending order to descending order, modify to "g7 ~ g0, g15 ~ g8, etc." (see Figure 263,

(Figure 264,.2011 version of 5.4.6.7.3, 5.4.6.8.2).

--- Modified the content layout of "Call Write Group Index" (see 8.4.5.8.2, 5.4.6.8.2 of the.2011 edition).

--- Modified the content layout of "Response Write Group Index" (see 8.4.5.8.3, 5.4.6.8.3 in the.2011 edition).

--- Modified all the graphical bit ordering in the full text. the bit order 0 ~ 7 ascending order is modified to 7 ~ 0 descending order; the bit order 0 ~

Change the 15 arrangement to 15 ~ 0 arrangement; modify the text (0) ~ (7) ascending order to the descending order (7) ~ (0) (see Figure 43, table

2 5.5.2.3,.2011 version of Figure 147, Table 2, 4.7.2.2).

This part uses the redrafting method to modify and adopt the IEC 61375-2-1..2012 "Train Communication Network (TCN) for Rail Transit Electronic Equipment

Part 2-1. Stranded Train Bus (WTB) ".

Compared with IEC 61375-2-1..2012, this part has more structural adjustments. Appendix A lists this part and IEC 61375-2-

The list of chapter numbers in 1..2012 is compared.

Compared with IEC 61375-2-1..2012, there are technical differences between this part and the clauses related to these differences have been adopted

The vertical single line (|) in the white position is marked. The specific technical differences and the reasons are as follows.

--- Added the content of "Regulations" in the scope to meet the requirements of GB/T 1.1 (see Chapter 1).

--- With regard to normative quotation documents, this part has been adjusted with technical differences to adapt to China's technical conditions and adjustments

The situation is reflected in Chapter 2 "Regulatory Reference Documents", with specific adjustments as follows.

* Replaced ITU-TV.24 with GB/T 3454 equivalent to international standards;

* Replaced ISO /IEC 13239 with GB/T 7421 which is equivalent to international standards;

* Replace ISO /IEC 10646 with GB/T 13000 equivalent to international standards;

* Replace ISO 8859-1 with GB/T 15273.1 which is equivalent to international standards;

* Replace ISO /IEC 8802-2 with GB/T 15629.2 equivalent to international standards;

* Replaced ISO /IEC 8824 (all parts) with GB/T 16262 (all parts), the agreement between the parts of the two standards

The degree of sex is as follows.

* GB/T 16262.1-2006 Information Technology Abstract Syntax Notation One (ASN.1) Part 1. Basic Notation Regulations

Fan (ISO /IEC 8824-1..2002, IDT);

* GB/T 16262.2-2006 Information Technology Abstract Syntax Notation One (ASN.1) Part 2. Information Object Regulations

Fan (ISO /IEC 8824-2..2002, IDT);

* GB/T 16262.3-2006 Information Technology Abstract Syntax Notation One (ASN.1) Part 3. Constraint Specification

(ISO /IEC 8824-3..2002, IDT);

* GB/T 16262.4-2006 Information Technology Abstract Syntax Notation One (ASN.1) Part 4. ASN.1 Specification

Parameterization (ISO /IEC 8824-4..2002, IDT).

* Replaced IEC 60571 with GB/T 25119 modified to adopt international standards;

* Replaced IEC 61375-2-2..2012 with GB/T 28029.3-2020, which adopts international standards.

* Replaced IEC 61375-3-1 with GB/T 28029.9 modified to adopt international standards;

* Deleted IEC 61375-1, ISO /IEC 8825 and ISO /IEC 9646.

--- Deleted terms and definitions not used in the text (see Chapter 3 of IEC 61375-2-1..2012);

--- Removed the abbreviations "AVA, BER, DIN, EIA, EP, ERRI, LLC, ORE, PICS, PTA, RIC" (see IEC

61375-2-1. 3.2 of.2012);

--- Modified the external resistance load value of the heavy-duty test circuit in the "transmitter test circuit diagram" from "0.42Rt" to "0.75Rt"

The resistive load value of the heavy-duty test circuit in the transmitter test circuit diagram is the parallel value of the terminator resistance and the external resistance.

When the resistance value is 0.75Rt, the resistive load value of the heavy load test circuit is about 0.42Rt, which meets the standard requirements (see Figure 24);

--- Modify the "characteristic period of node request, expressed as 2n times the basic period T_bp. N = 0 ~ 128" is

The characteristic period is expressed as 2n times the basic period T_bp. n = 0 ~ 7. ", as listed in the program notes, the special characteristics of the node request

The sign period is 1 ~ 128 times of the basic period, that is, 2n = 1 ~ 128, corresponding to n = 0 ~ 7 (see 5.5.2.2);

--- Modify "/ * bit0 * /" to "/ * bit7 * /", "/ * bit1 * /" to "/ * bit6 * /", because the unified table 148 program comments

And illustration (see 6.3.10.2.4);

--- Modified all the graphical bit sequence arrangements in the full text, and changed the bit sequence 0 ~ 15 arrangement to 15 ~ 0 arrangement, because according to 3.3.5 transmission

The data transmission specifications are unified with the full-text graphical bit sequence arrangement (see 5.2.3, 8.3.2.1, 8.4.1.6).

This section also made the following editorial changes.

--- Added the missing clause b. 4.1.4 of IEC 61375-2-1..2012.

2 "(see 4.2.4).

--- Modified Table 6 in 4.4.5.

--- Delete the number e) and f) in front of clause e) and clause f) of 4.7.2.1.

--- Modified the drawing method of Fig. 33 of 4.7.1.5.3 and Fig. 34 of 4.7.1.5.4 of IEC 61375-2-1..2012 (see 4.8.1.5.4,

4.8.1.5.5).

--- Modify "T_ip = (2n x T_bp)" in 5.4.2.1 to "T_ip = (2n x T_bp)".

--- Added the missing clause 5.5.4.8.9 c). "Message polling. the master device polls in the remaining time before the start of the next cycle

Node to obtain message data, see 5.5.4.8.12. ".

--- Modify "Unsigned1 to" UNSIGNED ".

--- Modified some errors in IEC 61375-2-1..2012.

* The meaning of "LS_REGULAR_SLAVE" in 5.6.4.2.2 is "nodeinstateREGULAR_SLAVEor"

"TEACHING_MASTER" in TEACHING_MASTER "is wrong, modify it to" section

The point is in the conventional slave device or the node is in the learning slave state ";

* The "'BA'H (= 442)" in 6.2.3.3.5.1 is wrong, and it will be modified to "' 1BA'H (= 442)" in this section;

* "nk_eot" in "nk_eotBOOLEAN1--alwaysFALSE (0)" in 6.3.6.5.4 is incorrect, in this part

Modify it to "nk_e";

* The "sif_code = 39" in 8.4.4.9.3 is wrong. In this section, it is modified to "sif_code = 29".

--- Move UIC557 of IEC 61375-2-1..2012 Chapter 2 into the reference, because UIC557 is informative in this part

Quote.

--- Adjusted some column numbers.

Please note that some content of this document may involve patents. The issuer of this document does not assume responsibility for identifying these patents.

This part is proposed by the State Railway Administration.

This part is under the jurisdiction of the National Technical Committee for Standardization of Traction Electrical Equipment and Systems (SAC/TC278).

This section was drafted by. CRRC Zhuzhou Electric Locomotive Research Institute Co., Ltd., CRRC Qingdao Sifang Vehicle Research Institute Co., Ltd., CRRC

Lianlian Electric Traction R & D Center Co., Ltd., CRRC Changchun Rail Bus Co., Ltd., CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd.

Division, CRRC Zhuzhou Electric Locomotive Co., Ltd., China Railway Research Institute Group Co., Ltd. Locomotive Research Institute.

Introduction

This part of GB/T 28029 specifies an integral part of the train communication network-the Stranded Train Bus (WTB), which is

One of the main serial data communication buses used for reconnecting vehicles that are often connected and disconnected from each other, see Figure 1.

Figure 1 Stranded train bus

This part defines the communication interface of the train communication network (TCN).

TCN is divided into two layers of network architecture, namely train backbone network and train marshalling network.

a) For interconnected vehicles in open trains (see definition), such as UIC trains, this section specifies what is called a stranded train bus

(WTB) train bus;

b) In order to connect standard on-board equipment, a marshalling network can be used, such as a multi-function vehicle bus (MVB).

In the TCN system, WTB is characterized by a real-time protocol that provides two types of communication services.It provides two types of communication services.

a) Process variables, a distributed real-time data set, periodically refreshed through broadcast;

b) Messages are only transmitted in the following two ways when needed.

* Unicast (point-to-point) or/and;

* Multicast.

WTB provides general network management to debug, test and maintain the entire network.

MVB and WTB share real-time protocol and network management, and other grouping networks need to communicate with WTB's real-time protocol and network management

adaptation.

The structure of TCN is similar to the open interconnection model (OSI model) defined in GB/T 9387.1, see Figure 2.

Note. The numbers in the figure correspond to the chapter numbers in this section.

Figure 2 TCN layering

This part includes 8 chapters and 1 appendix.

Chapter 1. Scope;

Chapter 2. Normative references;

Chapter 3. Terms, definitions, abbreviations and conventions;

Chapter 4. Physical layer;

Chapter 5. Link layer control;

Chapter 6. Real-time protocol.

--- Variables. link layer interface and application layer interface;

--- Message. link layer interface, protocol, application layer interface;

--- Data representation.

Chapter 7. Application Layer.

--- Process data layout;

--- WTB line fault location detection.

Chapter 8. Train Network Management.

--- Network configuration, monitoring and control.

Appendix A (informative appendix). The structural changes of this part compared with IEC 61375-2-1..2012.

Rail Transit Electronic Equipment Train Communication Network (TCN)

Part 2-1. Stranded Train Bus (WTB)

1 Scope

This part of GB/T 28029 specifies the stranded train bus (WTB).

This section applies to data communication between and within marshalling in open trains.

Application of the train communication bus (WTB) of this part can realize the interoperability of each marshalling in open trains. Data communication within the group

The letter network (such as MVB) is compatible with TCN, and the supplier provides WTB and marshalling network compatibility certification.

If the supplier agrees with the user through consultation, this section can also be used for closed trains and multi-unit trains.

Note. This section does not consider buses, trolleybuses and other vehicles.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

GB/T 3454 Interface Circuit Definition Table between Data Terminal Equipment (DTE) and Data Circuit Terminating Equipment (DCE) (GB/T 3454-

2011, ITU-TV.24..2000, IDT)

GB/T 7421 Advanced Data Link Control (HDLC) Regulations for Telecommunications and Information Exchange between Information Technology Systems

(GB/T 7421-2008, ISO /IEC 13239..2002, IDT)

GB/T 13000 Information Technology Universal Multi-octet Coded Character Set (UCS) (GB/T 13000-2010, ISO /IEC 10646.

2003, IDT)

GB/T 15273.1 Information processing eight-bit single-byte coded graphic character set Part 1. Latin alphabet one (GB/T 15273.

1-1994, idtISO 8859-1. 1987)

GB/T 15629.2 Particular Requirements for Local Area Networks and Metropolitan Area Networks for Telecommunications and Information Exchange between Information Technology Systems Part 2

Points. logical link control (GB/T 15629.2-2008, ISO /IEC 8802-2..1998, IDT)

GB/T 16262 (All Parts) Information Technology Abstract Syntax Notation One (ASN.1) [ISO /IEC 8824 (All Parts)]

GB/T 25119 Electronic device for rail transit rolling stock (GB/T 25119-2010, IEC 60571..2006, MOD)

GB/T 28029.3-2020 Rail Transit Electronic Equipment Train Communication Network (TCN) Part 2-2. Stranded Train Bus

(WTB) Conformance test (IEC 61375-2-2..2012, MOD)

GB/T 28029.9 Rail Transit Electronic Equipment Train Communication Network (TCN) Part 3-1. Multifunctional Vehicle Bus (MVB)

(GB/T 28029.9-2020, IEC 61375-3-1..2012, MOD)

IEC 60807 (all parts) Rectangular connectors for frequencies below 3MHz (Rectangular connectors forfrequencies)

below3MHz)

IEEE754 binary floating point arithmetic (StandardforBinaryFloating-PointArithmetic)

ITU-T RecommendationZ.100SDL language [SpecificationandDescriptionLanguage (SDL)]

UIC556 Information transmission on the train bus [Informationtransmissioninthetrain (train-bus)]

3 Terms, definitions, abbreviations and conventions