Industrial communication networks - Broadband fieldbus specification - AUTBUS

IEC PAS 63256:2020(E) defines the broadband fieldbus specification AUTBUS. AUTBUS implements real-time, high reliability and deterministic transmission and application for both industrial fieldbus data and ISO/IEC/IEEE 8802-3 Ethernet data by shared medium bus.
This document explains the structure and content of AUTBUS, and describes the definition and specification of Physical Layer (PhL) protocol / service, Data-link Layer (DLL) protocol / service and Application Layer (AL) protocol / service of AUTBUS

General Information

Status
Published
Publication Date
09-Jan-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
10-Jan-2020
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IEC PAS 63256:2020 - Industrial communication networks - Broadband fieldbus specification - AUTBUS
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IEC PAS 63256
Edition 1.0 2020-01
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Industrial communication networks – Broadband fieldbus specification – Autbus
IEC PAS 63256:2020-01(en)
---------------------- Page: 1 ----------------------
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IEC PAS 63256
Edition 1.0 2020-01
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Industrial communication networks – Broadband fieldbus specification – Autbus
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 00.000 ISBN 978-2-8322-7749-2

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC PAS 62356:2020 © IEC 2020
CONTENTS

FOREWORD ......................................................................................................................... 11

1 Scope ............................................................................................................................ 12

2 Normative references .................................................................................................... 12

3 Terms and definitions, abbreviated terms and symbols .................................................. 12

3.1 Terms and definitions ............................................................................................ 12

3.2 Abbreviated terms ................................................................................................. 14

3.3 Symbols ................................................................................................................ 16

4 Data type ....................................................................................................................... 16

4.1 Overview............................................................................................................... 16

4.2 Basic data type ..................................................................................................... 16

4.2.1 Unsigned type coding (UINT) ......................................................................... 16

4.2.2 Time type coding (TIMEV) ............................................................................. 17

4.2.3 Date type coding (DATE2000) ....................................................................... 17

4.2.4 Time of day type coding (TIMEOFDAY) ......................................................... 18

4.2.5 Time difference type coding (TIMEDIFFER) ................................................... 18

4.2.6 String type coding (STRING) ......................................................................... 18

4.2.7 Bitmap tpye coding (BITMAP) ........................................................................ 19

4.3 Complex type ........................................................................................................ 19

4.3.1 Struct type coding (STRUCT)......................................................................... 19

4.3.2 Array type coding (ARRAY) ........................................................................... 19

5 AUTBUS overview ......................................................................................................... 19

5.1 Overview............................................................................................................... 19

5.2 AUTBUS protocol stack architecture ..................................................................... 20

5.3 Device type ........................................................................................................... 22

5.3.1 Overview ....................................................................................................... 22

5.3.2 Control Device ............................................................................................... 22

5.3.3 Field Device .................................................................................................. 22

5.3.4 Management Node ........................................................................................ 22

5.3.5 Terminal Node ............................................................................................... 22

5.4 Network topology .................................................................................................. 22

6 System management ..................................................................................................... 23

6.1 Overview............................................................................................................... 23

6.2 System management process ............................................................................... 23

6.3 System management information table .................................................................. 24

6.3.1 PhL related management information table .................................................... 24

6.3.2 DLL related management information table .................................................... 31

6.3.3 AL related management information table ...................................................... 34

7 Physical layer ................................................................................................................ 36

7.1 Physical Layer overview ........................................................................................ 36

7.2 PhL resource ........................................................................................................ 37

7.2.1 Signal frame .................................................................................................. 37

7.2.2 Data subframe ............................................................................................... 39

7.2.3 OFDM symbol ................................................................................................ 40

7.2.4 Code Block .................................................................................................... 41

7.2.5 Resource element .......................................................................................... 41

7.2.6 Working mode ............................................................................................... 42

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IEC PAS 62356:2020 © IEC 2020 – 3 –

7.3 DLL–PhL interface ................................................................................................ 44

7.3.1 General ......................................................................................................... 44

7.3.2 Service primitive ............................................................................................ 45

7.3.3 Primitive process ........................................................................................... 47

7.4 System management-PhL interface ....................................................................... 47

7.4.1 General ......................................................................................................... 47

7.4.2 Service primitive ............................................................................................ 47

7.4.3 Primitive process ........................................................................................... 49

7.5 DCE Independent Sublayer (DIS) .......................................................................... 50

7.5.1 General ......................................................................................................... 50

7.5.2 Data sequence .............................................................................................. 50

7.6 DTE-DCE interface ............................................................................................... 51

7.6.1 General ......................................................................................................... 51

7.6.2 Interface signal .............................................................................................. 51

7.6.3 Signal process ............................................................................................... 52

7.7 Medium Dependent Sublayer (MDS) ..................................................................... 52

7.7.1 General ......................................................................................................... 52

7.7.2 MDS specification .......................................................................................... 52

7.8 MDS-MAU interface .............................................................................................. 59

7.8.1 General ......................................................................................................... 59

7.8.2 MDS-MAU interface ....................................................................................... 59

7.9 Medium Attachment Unit (MAU) ............................................................................ 62

7.9.1 Overview ....................................................................................................... 62

7.9.2 Electrical specifications ................................................................................. 62

7.9.3 Transmission Medium Interface ..................................................................... 62

7.9.4 Medium ......................................................................................................... 63

8 Data-link layer ............................................................................................................... 65

8.1 General ................................................................................................................. 65

8.1.1 DLL protocol architecture ............................................................................... 65

8.1.2 DLL working mechanism ................................................................................ 67

8.2 DLL services ......................................................................................................... 70

8.2.1 General ......................................................................................................... 70

8.2.2 Data-link service model ................................................................................. 71

8.2.3 Data-link service description .......................................................................... 72

8.2.4 Data-link management service description ..................................................... 85

8.2.5 Clock synchronization service description .................................................... 101

8.3 DLL protocol ....................................................................................................... 107

8.3.1 Working procedure ...................................................................................... 107

8.3.2 DLPDU structure ......................................................................................... 116

8.3.3 State machine ............................................................................................. 129

8.3.4 Error handling .............................................................................................. 134

9 Application Layer ......................................................................................................... 136

9.1 Overview............................................................................................................. 136

9.1.1 Protocol architecture .................................................................................... 136

9.1.2 Data type of AL ............................................................................................ 137

9.1.3 Data mapping modeling ............................................................................... 140

9.1.4 Communication model ................................................................................. 143

9.2 AL Service .......................................................................................................... 144

9.2.1 Overview ..................................................................................................... 144

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– 4 – IEC PAS 62356:2020 © IEC 2020

9.2.2 Application Service Elements....................................................................... 145

9.2.3 Application service ...................................................................................... 169

9.3 Specification for AL protocol ............................................................................... 171

9.3.1 Overview ..................................................................................................... 171

9.3.2 Message format ........................................................................................... 171

9.3.3 State machine ............................................................................................. 176

Annex A (informative) Example of data subframe allocation ............................................... 184

A.1 Example A .......................................................................................................... 184

A.2 Example B .......................................................................................................... 185

A.3 Example C .......................................................................................................... 186

Annex B (normative) RS code generating polynomial ......................................................... 187

Annex C (informative) Example for NodeID and MAC address mapping ............................. 188

Annex D (informative) Example for multicast group working mechanism ............................ 189

Annex E (informative) Example of service data mapping DTU message ............................. 190

Annex F (informative) Example of OPC UA data model and AUTBUS data model

mapping .............................................................................................................................. 191

Annex G (informative) Example of RTA service processing ................................................ 192

Annex H (informative) AUTBUS virtualization solution example .......................................... 193

Bibliography ........................................................................................................................ 196

Figure 1 – BITMAP data type ................................................................................................ 19

Figure 2 – Corresponding relationship between AUTBUS protocol stack and OSI

reference model .................................................................................................................... 20

Figure 3 – AUTBUS protocol stack architecture .................................................................... 21

Figure 4 – AUTBUS network topology ................................................................................... 23

Figure 5 – AUTBUS system management process ................................................................ 24

Figure 6 – Resource block information structure ................................................................... 31

Figure 7 – AUTBUS Physical Layer model ............................................................................ 37

Figure 8 – AUTBUS SF and OFDM symbol ........................................................................... 38

Figure 9 – SF structure ......................................................................................................... 39

Figure 10 – Carrier mode A and carrier mode B of data subframe ......................................... 40

Figure 11 – OFDM symbol structure of PhL ........................................................................... 40

Figure 12 – OFDM timing structure ....................................................................................... 41

Figure 13 – DLPDU and CB .................................................................................................. 41

Figure 14 – Resource element schematic diagram ................................................................ 42

Figure 15 – Mapping between data units across the DLL-PhL interface ................................. 44

Figure 16 – DLL-PhL interface service primitive process ....................................................... 47

Figure 17 – System management-PhL interface primitive process ......................................... 50

Figure 18 – DTE-DCE interface signal process ..................................................................... 52

Figure 19 – PhL channel process .......................................................................................... 53

Figure 20 – Scrambling sequence generation ....................................................................... 53

Figure 21 – Convolutional encoder with a code rate of 1/2 .................................................... 55

Figure 22 – Bit deletion process with code rates 2/3 and 3/4 ................................................. 55

Figure 23 – Generation of m sequence ................................................................................. 57

Figure 24 – OFDM symbol structure diagram ........................................................................ 58

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IEC PAS 62356:2020 © IEC 2020 – 5 –

Figure 25 – MDS-MAU interface service process diagram ..................................................... 60

Figure 26 – Signal spectrum template ................................................................................... 61

Figure 27 – Connector of the shielded twisted pair ................................................................ 64

Figure 28 – Terminal resistor ................................................................................................ 64

Figure 29 – DLL in AUTBUS protocol stack architecture ....................................................... 65

Figure 30 – Relationship of AUTBUS DLL to other filedbus layers and to users of

AUTBUS DLS ....................................................................................................................... 66

Figure 31 – AUTBUS DLL protocol architecture diagram ....................................................... 66

Figure 32 – Resource mapping between DLL and PhL .......................................................... 69

Figure 33 – DLL resource mapping message queue scheduling diagram ............................... 70

Figure 34 – Primitive process of CLMDTA ............................................................................. 73

Figure 35 – Primitive process of CLMDTNA .......................................................................... 75

Figure 36 – Primitive process of CLMDTRA .......................................................................... 77

Figure 37 – Primitive process of CLMDTRRNA ..................................................................... 79

Figure 38 – Primitive process of CMDTA ............................................................................... 81

Figure 39 – Primitive process of CMDTNA ............................................................................ 83

Figure 40 – Data-link config management service primitive process ...................................... 86

Figure 41 – TN active logout discovery service primitive process .......................................... 90

Figure 42 – Data-link discovery management service primitive sequence diagram ................ 90

Figure 43 – Local data-link maintenance service primitive process diagram .......................... 93

Figure 44 – Remote data-link maintenance service primitive process diagram ...................... 93

Figure 45 – Data-link establish management service primitive process ................................. 96

Figure 46 – Data-link release management service primitive sequence diagrame ................. 98

Figure 47 – Data-link update management service primitive sequence diagram .................. 100

Figure 48 – Delay measurement service primitive process .................................................. 102

Figure 49 – Clock synchronization service primitive process ............................................... 104

Figure 50 – Clock interrupt service primitive process .......................................................... 106

Figure 51 – Resource mapping configuration diagram ......................................................... 108

Figure 52 – Initial access configuration procedure diagram ................................................. 109

Figure 53 – The random access configuration procedure diagram ....................................... 110

Figure 54 – Node leave procedure diagram ......................................................................... 112

Figure 55 – DLS data sending procedure diagram ............................................................... 113

Figure 56 – DLS data receiving procedure diagram ............................................................. 114

Figure 57 – Clock synchronization delay measurement procedure diagram ......................... 115

Figure 58 – Clock register structure diagram ....................................................................... 115

Figure 59 – Clock synchronization procedure ...................................................................... 116

Figure 60 – Universal DLPDU structure .............................................................................. 116

Figure 61 – Basic configuration DLPDU structure................................................................ 117

Figure 62 – General configuration block structure ............................................................... 118

Figure 63 – Address assignment DLPDU structure .............................................................. 119

Figure 64 – Multicast assignment DLPDU structure............................................................. 120

Figure 65 – Resource allocation DLPDU structure .............................................................. 121

Figure 66 – Access notification DLPDU structure ................................................................ 122

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– 6 – IEC PAS 62356:2020 © IEC 2020

Figure 67 – Resource application DLPDU structure............................................................. 123

Figure 68 – Resource release DLPDU structure .................................................................. 124

Figure 69 – Status query DLPDU structure ......................................................................... 125

Figure 70 – Status response DLPDU ................................................................................... 125

Figure 71 – Announcement DLPDU structure ...................................................................... 126

Figure 72 – Clock synchronization DLPDU structure ........................................................... 128

Figure 73 – Common DLPDU structure ............................................................................... 129

Figure 74 – DLDE state machine ........................................................................................ 130

Figure 75 – DLME state machine ........................................................................................ 132

Figure 76 – DLCE state machine ........................................................................................ 133

Figure 77 – AL in AUTBUS protocol stack architecture ........................................................ 136

Figure 78 – Relationship of AUTBUS AL to other fieldbus layers and to users of

AUTBUS application service ............................................................................................... 136

Figure 79 – Diagram of AUTBUS AL protocol architecture .................................................. 137

Figure 80 – Data mapping modeling object structure ........................................................... 141

Figure 81 – Diagram of mapping data buffers and service data variables ............................ 142

Figure 82 – Diagram of P/S model ...................................................................................... 143

Figure 83 – P/S model of PUSH mode ................................................................................ 143

Figure 84 – P/S model of PULL mode ................................................................................. 144

Figure 85 – Diagram of C/S communication model .............................................................. 144

Figure 86 – RT data transmission model ............................................................................. 147

Figure 87 – Diagram of nRT data request pesponse model ................................................. 149

Figure 88 – Diagram of nRT data AP interaction based on C/S communication model ......... 149

Figure 89 – Diagram of nRT data AP interaction based on P/S communication model ......... 150

Figure 90 – Time synchronization application interaction pocess ........................................ 152

Figure 91 – Time query fow ................................................................................................ 153

Figure 92 – Resource AP interaction based on C/S communication model .......................... 155

Figure 93 – Resource ASE local service function Diagram .................................................. 155

Figure 94 – NETWORKID identification field structure ......................................................... 156

Figure 95 – NETWORKID interaction process diagram ........................................................ 158

Figure 96 – Diagram of MAC mapping table service function............................................... 158

Figure 97 – IP mapping table service function diagram ....................................................... 159

Figure 98 – AUTBUS AL data message is mapped to IP payload data payload ................... 159

Figure 99 – AUTBUS AL protocol header and IP protocol header mapping.......................... 160

Figure 100 – IP data message is mapped to valid data of AUTBUS AL data message ......... 160

Figure 101 – Static configuration initialization process ........................................................ 163

Figure 102 – Join the network interaction process............................................................... 163

Figure 103 – Passively exit the network interaction process ................................................ 165

Figure 104 – Actively exit network interaction process ........................................................ 165

Figure 105 – Diagram of diagnostic object mapping ............................................................ 166

Figure 106 – Diagram of the logging process ...................................................................... 167

Figure 107 – A physical bus divided into two virtual bus domain diagrams .......................... 167

Figure 108 – Diagram of vir
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