kSIST FprEN IEC 61131-9:2022
(Main)Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI)
Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI)
This part of IEC 61131 specifies a single-drop digital communication interface technology for small sensors and actuators SDCI (commonly known as IO-LinkTM2), which extends the traditional digital input and digital output interfaces as defined in IEC 61131-2 towards a point-to-point communication link. This technology enables the transfer of parameters to Devices and the delivery of diagnostic information from the Devices to the automation system.
This technology is mainly intended for use with simple sensors and actuators in factory automation, which include small and cost-effective microcontrollers.
This part specifies the SDCI communication services and protocol (physical layer, data link layer and application layer in accordance with the ISO/OSI reference model) for both SDCI Masters and Devices.
This part also includes EMC test requirements.
This part does not cover communication interfaces or systems incorporating multiple point or multiple drop linkages, or integration of SDCI into higher level systems such as fieldbuses.
Speicherprogrammierbare Steuerungen - Teil 9: Schnittstelle für die Kommunikation mit kleinen Sensoren und Aktoren über eine Punkt-zu-Punkt-Verbindung
Automates programmables - Partie 9: Interface de communication numérique point à point pour les petits capteurs et actionneurs (SDCI)
L'IEC 61131-9:2022 spécifie une technologie d'interface de communication numérique point à point pour petits capteurs et actionneurs – SDCI – (généralement connue sous l'appellation IO-Link™[1]). Elle permet d'étendre les interfaces classiques d'entrées et de sorties numériques (telles que définies dans l'IEC 61131-2) en une liaison de communication point à point pour l'échange de données complexe dans les deux sens. Cette technologie permet également de transférer des paramètres aux Dispositifs et de fournir au système d'automatisation des informations de diagnostic et d'identification depuis les Dispositifs. Cette technologie est principalement destinée à l’utilisation en automatisation d'usine avec de simples capteurs et actionneurs intégrant de petits microcontrôleurs économiques. Le présent document spécifie les services et le protocole de communication SDCI (couche physique, couche de liaison de données et couche Application conformément au modèle de référence ISO/OSI) pour les Maîtres et Dispositifs SDCI. Le présent document inclut également des exigences d'essai CEM. Le présent document ne couvre pas les interfaces ou systèmes de communication comportant des connexions multipoints ou à liaisons multiples, ou encore l'intégration de SDCI dans des systèmes de niveau supérieur tels que les bus de terrain. [1] IO-LinkTM est une marque commerciale de "IO-Link Community". Cette information est fournie pour la commodité des utilisateurs du présent document et ne signifie nullement que l'IEC recommande l'emploi exclusif de la marque ou de l’un quelconque de ses produits. La conformité au présent document ne nécessite pas l’utilisation des logos déposés pour IO-LinkTM. L’utilisation des logos déposés pour IO-LinkTM nécessite l’autorisation du "IO-Link Community".
Programirljivi krmilniki- 9. del: Enožični digitalni komunikacijski vmesnik za male senzorje in dajalnike
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN IEC 61131-9:2021
01-julij-2021
Programirljivi kontrolniki - 9. del: Enožični digitalni komunikacijski vmesnik za
male senzorje in dajalnikeProgrammable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI)Speicherprogrammierbare Steuerungen - Teil 9: Schnittstelle für die Kommunikation mit
kleinen Sensoren und Aktoren über eine Punkt-zu-Punkt-VerbindungAutomates programmables - Partie 9: Interface de communication numérique point à
point pour les petits capteurs et actionneurs (SDCI)
Ta slovenski standard je istoveten z: prEN IEC 61131-9:2021
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
oSIST prEN IEC 61131-9:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61131-9:2021
65B/1199/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61131-9 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-05-07 2021-07-30
SUPERSEDES DOCUMENTS:
65B/1196/RR
IEC SC 65B : MEASUREMENT AND CONTROL DEVICES
SECRETARIAT: SECRETARY:
United States of America Mr Angus Low
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 65,SC 65C
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel votingThe attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.TITLE:
Programmable controllers - Part 9: Single-drop digital communication interface for small
sensors and actuators (SDCI)PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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oSIST prEN IEC 61131-9:2021
65B/1199/CDV – 2 – IEC CDV 61131-9 Ed2 © IEC:2021
Title:
Programmable controllers — Part 9: Single-drop digital communication interface for small sensors and
actuators (SDCI)This draft has no official front page. This front page is for internal use only. The official
front pages will be added later before circulation of the document to IEC National
Committees.For the sake of estimating the translation effort for this edition 2: The following graph
identifies clauses with changes beyond simple corrections (typos, etc.). Thecorresponding headers in the document are marked in yellow. Recent changes requested
by the support organization are marked in yellow too.Lexical part
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oSIST prEN IEC 61131-9:2021
IEC CDV 61131-9 Ed2 © IEC:2021 – 3 – 65B/1199/CDV
2 CONTENTS
4 FOREWORD ......................................................................................................................... 21
5 INTRODUCTION ................................................................................................................... 23
6 0.1 General ................................................................................................................. 23
7 0.2 Patent declaration ................................................................................................. 23
8 1 Scope ............................................................................................................................ 25
9 2 Normative references .................................................................................................... 25
10 3 Terms, definitions, symbols, abbreviated terms, and conventions .................................. 26
11 3.1 Terms and definitions............................................................................................ 26
12 3.2 Symbols and abbreviated terms ............................................................................ 30
13 3.3 Conventions .......................................................................................................... 32
14 3.3.1 General ......................................................................................................... 32
15 3.3.2 Service parameters ....................................................................................... 32
16 3.3.3 Service procedures ........................................................................................ 32
17 3.3.4 Service attributes........................................................................................... 33
18 3.3.5 Figures .......................................................................................................... 33
19 3.3.6 Transmission octet order ............................................................................... 33
20 3.3.7 Behavioral descriptions.................................................................................. 33
21 4 Overview of SDCI (IO-Link ) ........................................................................................ 35
22 4.1 Purpose of technology .......................................................................................... 35
23 4.2 Positioning within the automation hierarchy .......................................................... 35
24 4.3 Wiring, connectors and power ............................................................................... 36
25 4.4 Communication features of SDCI .......................................................................... 36
26 4.5 Role of a Master ................................................................................................... 38
27 4.6 SDCI configuration ................................................................................................ 39
28 4.7 Mapping to fieldbuses and/or other upper-level systems ....................................... 39
29 4.8 Standard structure ................................................................................................ 39
30 5 Physical Layer (PL) ....................................................................................................... 40
31 5.1 General ................................................................................................................. 40
32 5.1.1 Basics ........................................................................................................... 40
33 5.1.2 Topology ....................................................................................................... 40
34 5.2 Physical layer services ......................................................................................... 40
35 5.2.1 Overview ....................................................................................................... 40
36 5.2.2 PL services .................................................................................................... 42
37 5.3 Transmitter/Receiver ............................................................................................. 43
38 5.3.1 Description method ........................................................................................ 43
39 5.3.2 Electrical requirements .................................................................................. 43
40 5.3.3 Timing requirements ...................................................................................... 48
41 5.4 Power supply ........................................................................................................ 51
42 5.4.1 Power supply options ..................................................................................... 51
43 5.4.2 Port Class B .................................................................................................. 52
44 5.4.3 Power-on requirements .................................................................................. 53
45 5.5 Medium ................................................................................................................. 53
46 5.5.1 Connectors .................................................................................................... 53
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47 5.5.2 Cable ............................................................................................................. 54
48 6 Standard Input and Output (SIO) ................................................................................... 55
49 7 Data link layer (DL)........................................................................................................ 55
50 7.1 General ................................................................................................................. 55
51 7.2 Data link layer services ......................................................................................... 57
52 7.2.1 DL-B services ................................................................................................ 57
53 7.2.2 DL-A services ................................................................................................ 66
54 7.3 Data link layer protocol ......................................................................................... 70
55 7.3.1 Overview ....................................................................................................... 70
56 7.3.2 DL-mode handler ........................................................................................... 71
57 7.3.3 Message handler ........................................................................................... 78
58 7.3.4 Process Data handler .................................................................................... 85
59 7.3.5 On-request Data handler ............................................................................... 88
60 7.3.6 ISDU handler ................................................................................................. 91
61 7.3.7 Command handler ......................................................................................... 95
62 7.3.8 Event handler ................................................................................................ 97
63 8 Application layer (AL) .................................................................................................. 100
64 8.1 General ............................................................................................................... 100
65 8.2 Application layer services ................................................................................... 101
66 8.2.1 AL services within Master and Device .......................................................... 101
67 8.2.2 AL Services ................................................................................................. 101
68 8.3 Application layer protocol .................................................................................... 109
69 8.3.1 Overview ..................................................................................................... 109
70 8.3.2 On-request Data transfer ............................................................................. 109
71 8.3.3 Event processing ......................................................................................... 113
72 8.3.4 Process Data cycles .................................................................................... 117
73 9 System Management (SM) ........................................................................................... 118
74 9.1 General ............................................................................................................... 118
75 9.2 System Management of the Master ..................................................................... 118
76 9.2.1 Overview ..................................................................................................... 118
77 9.2.2 SM Master services ..................................................................................... 120
78 9.2.3 SM Master protocol...................................................................................... 125
79 9.3 System Management of the Device ..................................................................... 132
80 9.3.1 Overview ..................................................................................................... 132
81 9.3.2 SM Device services ..................................................................................... 134
82 9.3.3 SM Device protocol ..................................................................................... 139
83 10 Device ......................................................................................................................... 146
84 10.1 Overview ............................................................................................................ 146
85 10.2 Process Data Exchange (PDE) ........................................................................... 146
86 10.3 Parameter Manager (PM) .................................................................................... 147
87 10.3.1 General ....................................................................................................... 147
88 10.3.2 Parameter manager state machine .............................................................. 147
89 10.3.3 Dynamic parameter ..................................................................................... 149
90 10.3.4 Single parameter ......................................................................................... 149
91 10.3.5 Block Parameter .......................................................................................... 151
92 10.3.6 Concurrent parameterization access ............................................................ 153
93 10.3.7 Command handling ...................................................................................... 153
94 10.4 Data Storage (DS) .............................................................................................. 153
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95 10.4.1 General ....................................................................................................... 153
96 10.4.2 Data Storage state machine ......................................................................... 154
97 10.4.3 DS configuration .......................................................................................... 156
98 10.4.4 DS memory space ....................................................................................... 156
99 10.4.5 DS Index_List .............................................................................................. 156
100 10.4.6 DS parameter availability ............................................................................. 156
101 10.4.7 DS without ISDU .......................................................................................... 157
102 10.4.8 DS parameter change indication .................................................................. 157
103 10.5 Event Dispatcher (ED) ........................................................................................ 157
104 10.6 Device features ................................................................................................... 157
105 10.6.1 General ....................................................................................................... 157
106 10.6.2 Device backward compatibility ..................................................................... 157
107 10.6.3 Protocol revision compatibility ..................................................................... 157
108 10.6.4 Visual SDCI indication ................................................................................. 158
109 10.6.5 Parameter access locking ............................................................................ 158
110 10.6.6 Data Storage locking ................................................................................... 158
111 10.6.7 Locking of local parameter entries ............................................................... 158
112 10.6.8 Locking of local user interface ..................................................................... 158
113 10.6.9 Offset time ................................................................................................... 158
114 10.6.10 Data Storage concept .................................................................................. 159
115 10.6.11 Block Parameter .......................................................................................... 159
116 10.7 Device reset options ........................................................................................... 159
117 10.7.1 Overview ..................................................................................................... 159
118 10.7.2 Device reset ................................................................................................ 160
119 10.7.3 Application reset .......................................................................................... 160
120 10.7.4 Restore factory settings ............................................................................... 160
121 10.7.5 Back-to-box ................................................................................................. 160
122 10.8 Device design rules and constraints .................................................................... 161
123 10.8.1 General ....................................................................................................... 161
124 10.8.2 Process Data ............................................................................................... 161
125 10.8.3 Communication loss .................................................................................... 161
126 10.8.4 Direct Parameter ......................................................................................... 161
127 10.8.5 ISDU communication channel ...................................................................... 161
128 10.8.6 DeviceID rules related to Device variants .................................................... 162
129 10.8.7 Protocol constants ....................................................................................... 162
130 10.9 IO Device description (IODD) .............................................................................. 162
131 10.10 Device diagnosis ................................................................................................. 163
132 10.10.1 Concepts ..................................................................................................... 163
133 10.10.2 Events ......................................................................................................... 164
134 10.10.3 Visual indicators .......................................................................................... 164
135 10.11 Device connectivity ............................................................................................. 165
136 11 Master ......................................................................................................................... 165
137 11.1 Overview ............................................................................................................ 165
138 11.1.1 Positioning of Master and Gateway Applications .......................................... 165
139 11.1.2 Structure, applications, and services of a Master ......................................... 166
140 11.1.3 Object view of a Master and its ports ........................................................... 167
141 11.2 Services of the Standardized Master Interface (SMI) ........................................... 167
142 11.2.1 Overview ..................................................................................................... 167
143 11.2.2 Structure of SMI service arguments ............................................................. 169
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144 11.2.3 Concurrency and prioritization of SMI services ............................................ 169
145 11.2.4 SMI_MasterIdentification ............................................................................. 170
146 11.2.5 SMI_PortConfiguration ................................................................................ 171
147 11.2.6 SMI_ReadbackPortConfiguration ................................................................. 172
148 11.2.7 SMI_PortStatus ........................................................................................... 174
149 11.2.8 SMI_DSToParServ ...................................................................................... 175
150 11.2.9 SMI_ParServToDS ...................................................................................... 176
151 11.2.10 SMI_DeviceWrite ......................................................................................... 177
152 11.2.11 SMI_DeviceRead ......................................................................................... 178
153 11.2.12 SMI_ParamWriteBatch ................................................................................. 180
154 11.2.13 SMI_ParamReadBatch................................................................................. 181
155 11.2.14 SMI_PortPowerOffOn .................................................................................. 183
156 11.2.15 SMI_DeviceEvent ........................................................................................ 184
157 11.2.16 SMI_PortEvent ............................................................................................ 184
158 11.2.17 SMI_PDIn .................................................................................................... 185
159 11.2.18 SMI_PDOut ................................................................................................. 187
160 11.2.19 SMI_PDInOut .............................................................................................. 188
161 11.2.20 SMI_PDInIQ ................................................................................................ 189
162 11.2.21 SMI_PDOutIQ .............................................................................................. 190
163 11.2.22 SMI_PDReadbackOutIQ .............................................................................. 191
164 11.3 Configuration Manager (CM) ............................................................................... 192
165 11.3.1 Coordination of Master applications ............................................................. 192
166 11.3.2 State machine of the Configuration Manager ............................................... 195
167 11.4 Data Storage (DS) .............................................................................................. 199
168 11.4.1 Overview ..................................................................................................... 199
169 11.4.2 DS data object ............................................................................................. 199
170 11.4.3 Backup and Restore .................................................................................... 199
171 11.4.4 DS state machine ........................................................................................ 199
172 11.4.5 Parameter selection for Data Storage .......................................................... 206
173 11.5 On-request Data exchange (ODE) ....................................................................... 206
174 11.6 Diagnosis Unit (DU) ............................................................................................ 207
175 11.6.1 General ....................................................................................................... 207
176 11.6.2 Device specific Events ................................................................................. 207
177 11.6.3 Port specific Events ..................................................................................... 208
178 11.6.4 Dynamic diagnosis status ............................................................................ 208
179 11.6.5 Best practice recommendations ................................................................... 208
180 11.7 PD Exchange (PDE) ........................................................................................... 209
181 11.7.1 General ....................................................................................................... 209
182 11.7.2 Process Data input mapping ........................................................................ 209
183 11.7.3 Process Data output mapping ...................................................................... 211
184 11.7.4 Process Data invalid/valid qualifier status .................................................... 211
185 12 Holistic view on Data Storage ...................................................................................... 212
186 12.1 User point of view ............................................................................................... 212
187 12.2 Operations and preconditions ............................................................................. 212
188 12.2.1 Purpose and objectives ............................................................................... 212
189 12.2.2 Preconditions for the activation of the Data Storage mechanism .................. 213
190 12.2.3 Preconditions for the types of Devices to be replaced .................................. 213
191 12.2.4 Preconditions for the parameter sets ........................................................... 213
192 12.3 Commissioning ................................................................................................... 214
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193 12.3.1 On-line commissioning ................................................................................ 214
194 12.3.2 Off-site commissioning ................................................................................ 214
195 12.4 Backup Levels .................................................................................................... 214
196 12.4.1 Purpose ....................................................................................................... 214
197 12.4.2 Overview ..................................................................................................... 214
198 12.4.3 Commissioning ("Disable") .......................................................................... 215
199 12.4.4 Production ("Backup/Restore") .................................................................... 215
200 12.4.5 Production ("Restore") ................................................................................. 216
201 12.5 Use cases ........................................................................................................... 216
202 12.5.1 Device replacement (@ "Backup/Restore") .................................................. 216
203 12.5.2 Device replacement (@ "Restore")............................................................... 217
204 12.5.3 Master replacement ..................................................................................... 217
205 12.5.4 Project replication ........................................................................................ 217
206 13 Integration ................................................................................................................... 217
207 13.1 Generic Master model for system integration ...................................................... 217
208 13.2 Role of gateway applications .............................................................................. 218
209 13.2.1 Clients ......................................................................................................... 218
210 13.2.2 Coordination ................................................................................................ 218
211 13.3 Security .............................................................................................................. 218
212 13.4 Special gateway applications .............................................................................. 219
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