IEC 61158-6-24:2023

Industrial communication networks - Fieldbus specifications - Part 6-24: Application layer protocol specification - Type 24 elements

IEC 61158-6-24:2023 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 24 fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-24: Spécification du protocole de la couche application - Eléments de type 24

L'IEC 61158-6-24:2023 fournit des éléments communs pour les communications à temps critique ou non entre des programmes d’application dans un environnement et avec un matériel d’automation spécifiques aux bus de terrain de type 24. Le terme "à temps critique" est utilisé pour indiquer la présence d’une fenêtre temporelle, dans laquelle il est exigé de réaliser une ou plusieurs actions spécifiées selon un niveau défini de certitude. Tout manquement à réaliser ces actions dans la fenêtre de temps prévue risque de provoquer la défaillance des applications qui les demandent, avec le risque de mettre en danger l’équipement, l’usine, voire les personnes.

General Information

• Status: Published
• Publication Date: 23-Mar-2023
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.70 - Application layer
• ICS: 35.110 - Networking
• Technical Committee: SC 65C - Industrial networks
• Drafting Committee: WG 9 - TC 65/SC 65C/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2023
• Completion Date: 24-Mar-2023

Relations

• Revises: IEC 61158-6-24:2014 - Industrial communication networks - Fieldbus specifications - Part 6-24: Application layer protocol specification - Type 24 elements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61158-6-24 ®
Edition 2.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-24: Application layer protocol specification – Type 24 elements

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IEC 61158-6-24 ®
Edition 2.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –

Part 6-24: Application layer protocol specification – Type 24 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-6642-7

– 2 – IEC 61158-6-24:2023 © IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
1.1 General . 9
1.2 Specifications . 9
1.3 Conformance . 10
2 Normative references . 10
3 Terms, definitions, symbols, abbreviated terms, and conventions . 10
3.1 Referenced terms and definitions . 10
3.1.1 Terms and definitions from ISO/IEC 7498-1 . 11
3.1.2 Terms and definitions from ISO/IEC 9545 . 11
3.1.3 Terms and definitions from ISO/IEC 8824-1 . 11
3.1.4 Terms and definitions from ISO/IEC 10731 . 11
3.1.5 Terms and definitions from ISO/IEC 19501 . 12
3.2 Additional terms and definitions . 12
3.3 Abbreviations and symbols . 17
3.4 Conventions . 19
3.4.1 General conventions . 19
3.4.2 PDU data type conventions . 19
3.4.3 State machine conventions . 19
4 Abstract syntax . 22
4.1 Basic Data types . 22
4.2 FAL PDU types . 23
4.2.1 Top of APDU types: _APDU . 23
4.2.2 PDUs for field device control service . 24
4.2.3 PDUs for message service . 37
4.3 Detailed definitions of _FDCService-PDUs . 38
4.3.1 Short PDU type . 38
4.3.2 Long PDU type . 45
4.3.3 Enhanced PDU type . 48
4.3.4 SubCommand PDU type . 58
4.3.5 Short PDU type II. 59
4.4 Device profile . 66
5 Transfer syntax . 66
5.1 Concepts . 66
5.2 Encode rules . 66
5.2.1 INTEGER and its subtypes . 66
5.2.2 REAL type and its subtypes . 68
5.2.3 BIT STRING type . 69
5.2.4 OCTET STRING type and IA5String type . 70
5.2.5 NULL type . 71
5.2.6 Structure type and Array type . 71
6 Structure of FAL protocol state machine . 71
7 AP-context state machine (APC SM) . 73
7.1 Overview. 73
7.2 State descriptions . 74

7.3 Triggering events . 75
7.4 Action descriptions at state transitions . 75
8 FAL service protocol machines (FSPM) . 77
8.1 Overview. 77
8.2 Field Device Control Protocol Machine (FDC PM) . 77
8.2.1 Protocol overview . 77
8.2.2 Cyclic communication mode . 78
8.2.3 Event driven communication mode . 82
8.2.4 Master Protocol Machine (FDCPM-M) . 83
8.2.5 Slave Protocol Machine (FDCPM-S) . 92
8.2.6 Monitor Protocol Machine (FDCPM-MN) . 102
8.2.7 Error procedure summary . 104
8.3 Message Protocol Machine (MSGPM) . 106
8.3.1 Protocol overview . 106
8.3.2 Requester Protocol Machine (MSGPM-RQ) . 108
8.3.3 Responder Protocol Machine (MSGPM-RS) . 111
9 Application relationship protocol machine (ARPM) . 113
9.1 General . 113
9.2 ARPM for FDC ASE . 114
9.2.1 Overview . 114
9.2.2 ARPM for FDC Master (ARPM-FDCM) . 116
9.2.3 ARPM for FDC Slave (ARPM-FDCS) . 122
9.2.4 ARPM for FDC Monitor (ARPM-FDCMN). 129
9.3 ARPM for MSG ASE (ARPM-MSG) . 131
9.3.1 State descriptions . 131
9.3.2 Triggering events . 132
9.3.3 Action descriptions at state transitions . 133
10 DLL mapping protocol machine (DMPM) . 134
Annex A (informative) Device profile and FDC command sets . 135
Annex B (normative) Virtual memory space and Device Information . 137
B.1 Overview. 137
B.2 Device Information . 137
B.2.1 Device identifier area structure . 137
B.2.2 Detail specifications of device IDs . 138
Annex C (informative) Basic message function . 144
Bibliography . 145

Figure 1 – Tree structure of APDU types . 24
Figure 2 – Encode of Integer subtypes . 67
Figure 3 – Example of transfer of INTEGER value . 67
Figure 4 – Encode of Unsigned subtypes . 68
Figure 5 – Float type encode . 68
Figure 6 – Float type encode . 69
Figure 7 – Bit field definition example with named bits . 70
Figure 8 – Bit field definition example with field size . 70
Figure 9 – SEQUENCE type encode . 71

– 4 – IEC 61158-6-24:2023 © IEC 2023
Figure 10 – Structure of FAL protocol state machines . 73
Figure 11 – Statechart diagram of APCSM . 74
Figure 12 – Example communication cycle of FDC master AP . 79
Figure 13 – Example communication cycle of FDC slave AP . 79
Figure 14 – Synchronous command communication in sync state . 80
Figure 15 – Asynchronous command communication in sync state . 81
Figure 16 – Asynchronous comman
...