Industrial communication networks - Profiles - Part 3-13: Functional safety fieldbuses - Additional specifications for CPF 13

IEC 61784-3-13:2016 specifies a safety communication layer (services and protocol) based on CPF 13 of IEC 61784-2 and IEC 61158 Type 13. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This safety communication layer is intended for implementation in safety devices only. This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. The main changes with respect to the previous edition are listed below:
- change of trade name to openSAFETY;
- addition of Slim Safety PDU;
- addition of SOD CRC;
- addition of SSDO block transfer services;
- addition of connection valid bit to SPDO;
- addition of number of retries for reset guarding;
- addition of user parameters that are writeable at any time;
- corrections and editorial improvements.

Réseaux de communication industriels - Profils - Partie 3-13: Bus de terrain de sécurité fonctionnelle - Spécifications supplémentaires pour CPF 13

L'IEC 61784-3-13:2016 spécifie une couche de communication de sécurité (services et protocole) fondée sur la CPF 13 de l'IEC 61784-2 et le type 13 de l'IEC 61158. Elle identifie les principes applicables aux communications de sécurité fonctionnelle définies dans l'IEC 61784-3, et appropriés à cette couche de communication de sécurité. Cette couche de communication de sécurité est destinée à la mise en oeuvre sur les appareils de sécurité uniquement. Cette deuxième édition annule et remplace la première édition parue en 2010. Cette édition constitue une révision technique. Les modifications majeures par rapport à l'édition précédente sont énumérées ci-dessous:
- Modification de l'appellation commerciale en openSAFETY;
- Ajout du PDU de sécurité Slim;
- Ajout du CRC du SOD;
- Ajout des services de transfert de bloc SSDO;
- Ajout du bit valide de connexion au SPDO;
- Ajout du nombre de nouvelles tentatives pour la réinitialisation de sauvegarde;
- Ajout de paramètres utilisateur qui peuvent être écrits à tout moment;
- corrections et améliorations rédactionnelles.

General Information

Status
Published
Publication Date
14-Jul-2016
Technical Committee
Current Stage
DELPUB - Deleted Publication
Completion Date
19-May-2021
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IEC 61784-3-13
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles –
Part 3-13: Functional safety fieldbuses – Additional specifications for CPF 13
Réseaux de communication industriels – Profils –
Partie 3-13: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour CPF 13
IEC 61784-3-13:2016-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61784-3-13
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles –
Part 3-13: Functional safety fieldbuses – Additional specifications for CPF 13
Réseaux de communication industriels – Profils –
Partie 3-13: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour CPF 13
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40, 35.100.05 ISBN 978-2-8322-3492-1

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61784-3-13:2016  IEC 2016
CONTENTS

FOREWORD ....................................................................................................................... 13

0 Introduction ................................................................................................................. 15

0.1 General ............................................................................................................... 15

0.2 Patent declaration ............................................................................................... 17

1 Scope .......................................................................................................................... 19

2 Normative references................................................................................................... 19

3 Terms, definitions, symbols, abbreviated terms and conventions................................... 20

3.1 Terms and definitions .......................................................................................... 20

3.1.1 Common terms and definitions ..................................................................... 20

3.1.2 CPF 13: Additional terms and definitions ...................................................... 25

3.2 Symbols and abbreviated terms ........................................................................... 26

3.2.1 Common symbols and abbreviated terms ...................................................... 26

3.2.2 CPF 13: Additional symbols and abbreviated terms ....................................... 27

3.3 Conventions ........................................................................................................ 28

3.3.1 Hexadecimal values ..................................................................................... 28

3.3.2 Binary values ............................................................................................... 28

3.3.3 Wildcard digits ............................................................................................. 28

3.3.4 Diagrams ..................................................................................................... 28

4 Overview of FSCP 13/1 (openSAFETY™)..................................................................... 28

4.1 Functional Safety Communication Profile 13/1 ..................................................... 28

4.2 Technical overview .............................................................................................. 29

5 General ....................................................................................................................... 29

5.1 External documents providing specifications for the profile ................................... 29

5.2 Safety functional requirements ............................................................................ 30

5.3 Safety measures ................................................................................................. 30

5.4 Safety communication layer structure .................................................................. 31

5.5 Relationships with FAL (and DLL, PhL) ................................................................ 33

5.5.1 General ....................................................................................................... 33

5.5.2 Data types ................................................................................................... 33

6 Safety communication layer services ............................................................................ 33

6.1 Modelling ............................................................................................................ 33

6.1.1 Reference model .......................................................................................... 33

6.1.2 Communication model .................................................................................. 34

6.1.3 Device roles and topology ............................................................................ 35

6.2 Life cycle model .................................................................................................. 39

6.2.1 General ....................................................................................................... 39

6.2.2 Concept, planning and implementation ......................................................... 39

6.2.3 Commissioning ............................................................................................ 40

6.2.4 Operation terms ........................................................................................... 41

6.2.5 Maintenance terms ....................................................................................... 43

6.3 Non safety communication layer .......................................................................... 43

6.3.1 General ....................................................................................................... 43

6.3.2 Requirements for data transport ................................................................... 43

6.3.3 Domain protection and separation ................................................................ 46

7 Safety communication layer protocol ............................................................................ 47

---------------------- Page: 4 ----------------------
IEC 61784-3-13:2016  IEC 2016 – 3 –

7.1 Safety PDU format .............................................................................................. 47

7.1.1 Structure of Safety PDUs ............................................................................. 47

7.1.2 Address field (ADR) ..................................................................................... 50

7.1.3 PDU identification field (ID) .......................................................................... 50

7.1.4 Length field (LE) .......................................................................................... 51

7.1.5 Consecutive Time field (CT) ......................................................................... 51

7.1.6 Payload data field (DB0 to DBn) ................................................................... 52

7.1.7 Cyclic Redundancy Check field (CRC-8 / CRC-16) ........................................ 52

7.1.8 Time Request Address field (TADR) ............................................................. 52

7.1.9 Time Request Distinctive Number field (TR) .................................................. 52

7.1.10 UDID of SCM coding (UDID of SCM) ............................................................ 52

7.2 Safety Process Data Object (SPDO) .................................................................... 53

7.2.1 General ....................................................................................................... 53

7.2.2 SPDO telegram types ................................................................................... 53

7.2.3 Data Only telegram ...................................................................................... 53

7.2.4 Data with Time Request telegram ................................................................. 54

7.2.5 Data with Time Response telegram .............................................................. 55

7.3 Safety Service Data Object (SSDO) ..................................................................... 56

7.3.1 General ....................................................................................................... 56

7.3.2 SSDO telegram types ................................................................................... 56

7.3.3 SSDO services and protocols ....................................................................... 57

7.3.4 SSDO Download Initiate ............................................................................... 59

7.3.5 SSDO Download Segment ............................................................................ 60

7.3.6 SSDO Block Download Initiate...................................................................... 61

7.3.7 SSDO Block Download Segment .................................................................. 62

7.3.8 SSDO Upload Initiate ................................................................................... 64

7.3.9 SSDO Upload Segment ................................................................................ 65

7.3.10 SSDO Block Upload Initiate .......................................................................... 66

7.3.11 SSDO Block Upload Segment ....................................................................... 67

7.3.12 SSDO Abort ................................................................................................. 67

7.4 Safety Network Management (SNMT) .................................................................. 69

7.4.1 General ....................................................................................................... 69

7.4.2 SNMT telegram types ................................................................................... 69

7.4.3 SNMT services and protocols ....................................................................... 69

7.5 Safety Object dictionary (SOD) ............................................................................ 81

7.5.1 General ....................................................................................................... 81

7.5.2 Object dictionary entry definition .................................................................. 81

7.5.3 Data type entry specification ........................................................................ 87

7.5.4 Object description ........................................................................................ 88

7.6 Safety related PDO mapping ............................................................................. 123

7.6.1 General ..................................................................................................... 123

7.6.2 Transmit SPDOs ........................................................................................ 124

7.6.3 Receive SPDOs ......................................................................................... 124

7.6.4 SPDO mapping parameter .......................................................................... 124

7.6.5 SPDO mapping example ............................................................................ 125

7.6.6 SPDO error handling .................................................................................. 127

7.7 State and sequence diagrams ........................................................................... 127

7.7.1 Safety Process Data Object (SPDO) ........................................................... 127

7.7.2 Time synchronization and validation ........................................................... 132

---------------------- Page: 5 ----------------------
– 4 – IEC 61784-3-13:2016  IEC 2016

7.7.3 Safety Service Data Object (SSDO) ............................................................ 141

7.7.4 SOD access ............................................................................................... 143

7.7.5 Safety Network Management Object (SNMT) .............................................. 153

7.7.6 SN power up .............................................................................................. 155

7.7.7 SN power down .......................................................................................... 159

7.7.8 SN recovery after Restart / Error ................................................................ 159

7.7.9 SCM power up ........................................................................................... 159

7.7.10 Address verification .................................................................................... 162

7.7.11 Commissioning mode ................................................................................. 164

7.7.12 Handle single UDID mismatch .................................................................... 164

7.7.13 Activate SN ................................................................................................ 168

7.7.14 Device exchange ....................................................................................... 169

8 Safety communication layer management ................................................................... 169

8.1 General ............................................................................................................. 169

8.2 Goals of parameterization ................................................................................. 169

8.3 Initial configuration of a device .......................................................................... 169

8.3.1 General ..................................................................................................... 169

8.3.2 SD setup by only configuring the SCM ........................................................ 170

8.3.3 SD setup configuring each SN .................................................................... 170

8.4 Avoiding of parameterizing the wrong device ..................................................... 170

8.5 Parameter check mechanism ............................................................................. 170

9 System requirements ................................................................................................. 171

9.1 Indicators and switches ..................................................................................... 171

9.2 Installation guidelines ........................................................................................ 171

9.3 Safety function response time ............................................................................ 171

9.4 Duration of demands ......................................................................................... 172

9.5 Constraints for calculation of system characteristics .......................................... 172

9.5.1 General ..................................................................................................... 172

9.5.2 Number of sinks limit .................................................................................. 172

9.5.3 Message rate limit ...................................................................................... 172

9.5.4 Message payload limit ................................................................................ 172

9.5.5 Bit error rate considerations ....................................................................... 173

9.5.6 Residual error rate ..................................................................................... 173

9.6 Maintenance ..................................................................................................... 174

9.6.1 Diagnostic information ................................................................................ 174

9.6.2 Replacement of safety related devices ........................................................ 174

9.6.3 Modification ............................................................................................... 175

9.6.4 Machine part changing ............................................................................... 175

9.6.5 Firmware update of safety related nodes .................................................... 175

9.6.6 Machine check due to service interval ........................................................ 175

9.7 Safety manual ................................................................................................... 175

10 Assessment ............................................................................................................... 175

10.1 General ............................................................................................................. 175

10.2 CP 13/1 assessment ......................................................................................... 176

10.3 FSCP 13/1 conformance test ............................................................................. 176

10.4 Approval of functional safety by competent assessment body ............................. 176

Annex A (informative) Additional information for functional safety communication

profiles of CPF 13 ............................................................................................................. 177

A.1 Hash function calculation ................................................................................... 177

---------------------- Page: 6 ----------------------
IEC 61784-3-13:2016  IEC 2016 – 5 –

A.2 … ..................................................................................................................... 180

Annex B (informative) Information for assessment of the functional safety

communication profiles of CPF 13 ..................................................................................... 181

Bibliography ..................................................................................................................... 182

Figure 1 – Relationships of IEC 61784-3 with other standards (machinery) ........................... 15

Figure 2 – Relationships of IEC 61784-3 with other standards (process) .............................. 16

Figure 3 – Producer consumer example .............................................................................. 29

Figure 4 – Client server example ......................................................................................... 29

Figure 5 – Communication layer structure ............................................................................ 32

Figure 6 – Safety communication channel ........................................................................... 33

Figure 7 – Characteristic producer / consumer communication ............................................. 34

Figure 8 – Extended producer / consumer communication ................................................... 35

Figure 9 – Client Server communication .............................................................................. 35

Figure 10 – Topology overview ............................................................................................ 36

Figure 11 – Safety Domain protection (example).................................................................. 37

Figure 12 – Safety Domain separation (example) ................................................................. 38

Figure 13 – Data flow example ............................................................................................ 42

Figure 14 – Communication model ...................................................................................... 43

Figure 15 – SPDO transport ................................................................................................ 44

Figure 16 – SSDO transport ................................................................................................ 45

Figure 17 – Diagnostic data representation.......................................................................... 46

Figure 18 – Safety PDUs inside a CP 13/1 PDU .................................................................. 47

Figure 19 – Basic Safety PDU for n = 0 – 8 octet payload data ............................................ 47

Figure 20 – Basic Safety PDU from 9 octet payload data ..................................................... 48

Figure 21 – Slim Safety PDU for n = 0 – 8 octet payload data .............................................. 49

Figure 22 – Slim Safety PDU from 9 octet payload data ....................................................... 49

Figure 23 – SPDO_Data_Only telegram .............................................................................. 54

Figure 24 – SPDO_Data_with_Time_Request telegram ....................................................... 54

Figure 25 – SPDO_Data_with_Time_Response telegram ..................................................... 55

Figure 26 – SSDO download protocols ................................................................................ 58

Figure 27 – SSDO upload protocols .................................................................................... 59

Figure 28 – SSDO Download Initiate protocol ...................................................................... 59

Figure 29 – SSDO Download Segment protocol ................................................................... 60

Figure 30 – SSDO Block Download Initiate protocol ............................................................. 61

Figure 31 – SSDO Block Download Segment protocol .......................................................... 63

Figure 32 – SSDO Upload Initiate protocol .......................................................................... 64

Figure 33 – SSDO Upload Segment protocol ....................................................................... 65

Figure 34 – SSDO Block Upload Initiate protocol ................................................................. 66

Figure 35 – SSDO Block Upload Segment protocol .............................................................. 67

Figure 36 – SSDO Abort protocol ........................................................................................ 67

Figure 37 – UDID Request / Response protocol ................................................................... 70

Figure 38 – SADR Assignment protocol ............................................................................... 71

Figure 39 – Reset Node Guarding Time protocol ................................................................. 72

---------------------- Page: 7 ----------------------
– 6 – IEC 61784-3-13:2016  IEC 2016

Figure 40 – SN set to Pre-Operational protocol .................................................................... 73

Figure 41 – SN set to Operational protocol .......................................................................... 74

Figure 42 – SN Acknowledge protocol ................................................................................. 76

Figure 43 – SN set to stop protocol ..................................................................................... 77

Figure 44 – SCM set to Operational protocol ....................................................................... 77

Figure 45 – Node Guarding protocol .................................................................................... 78

Figure 46 – Additional SADR Assignment protocol ............................................................... 79

Figure 47 – UDID of SCM Assignment protocol .................................................................... 80

Figure 48 – SPDO mapping example ................................................................................. 125

Figure 49 – State diagram TxSPDO ........
...

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