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BS EN IEC 61139-2:2022

BS EN IEC 61139-2:2022

$215.11

Industrial networks. Single-drop digital communication interface – Functional safety extensions

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BSI 2022 206
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IEC 61139-2:2022 specifies the extensions to SDCI in IEC 61131-9 for functional safety. This comprises: • a standardized OSSDe interface for redundant switching signals based on IEC 61131-2, • minor modifications/extensions to state machines of SDCI to support the safety operations, • a lean functional safety communication protocol on top of the standard SDCI communication which is a black channel according to IEC 61784-3:2021, • protocol management functions for configuration, parameterization, and commissioning, • IODD extensions for functional safety, • a Device tool interface to support Dedicated Tools according to functional safety standards. This document does not cover: • communication interfaces or systems including multi-point or multi-drop linkages, • communication interfaces or systems including multi-channel or encrypted linkages, • wireless communication interfaces or systems, • integration of SDCI-FS into upper-level systems such as fieldbuses/FSCPs.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
9 English
CONTENTS
19 FOREWORD
21 INTRODUCTION
Figures
Figure 1 – Positioning of SDCI-FS in functional safety automation
23 Figure 2 – Relationship of this document to standards
24 1 Scope
2 Normative references
25 3 Terms, definitions, symbols, abbreviated terms, and conventions
3.1 Terms and definitions
3.2 Common terms and definitions
28 3.3 Terms and definitions related to SDCI-FS
30 3.4 Symbols and abbreviated terms
31 3.5 Conventions
3.5.1 Behavioral descriptions
32 3.5.2 Memory and transmission octet order
4 Overview of SDCI-FS
4.1 Purpose of the technology and feature levels
4.1.1 Base SDCI-FS technology
Figure 3 – Memory and transmission octet order
Figure 4 – SDCI-FS communication layer model
33 4.1.2 From “analog” and “switching” to communication
Figure 5 – Port interface extensions for SDCI-FS
34 4.1.3 Minimized paradigm shift from FS-DI to FS-Master
Figure 6 – Migration to SDCI-FS
35 4.1.4 Following the SDCI paradigm (SIO vs. OSSDe)
Figure 7 – Minimized paradigm shift from FS-DI to FS-Master
Figure 8 – FS-Master types and feature levels
36 Figure 9 – Original pin layout of SDCI (port class A)
37 4.1.5 Port class B
Figure 10 – Optimized OSSDe commissioning with FS-Master
Tables
Table 1 – Operational modes of feature level “a” to “c” (port class A)
38 4.1.6 “USB-Master” with safety parameterization
4.1.7 Interoperability matrix of safety devices
Figure 11 – Level “d” of an FS-Master (Class B)
Figure 12 – Off-site configuration and parameterization
39 4.2 Positioning within the automation hierarchy
Table 2 – Interoperability matrix of safety devices
40 4.3 Wiring, connectors, and power supply
4.4 Relationship to SDCI
Figure 13 – SDCI-FS within the automation hierarchy
41 4.5 Communication features and interfaces
4.6 Parameterization
42 4.7 Role of FS-Master and FS-Gateway
4.8 Mapping to upper-level systems
4.9 Structure of the document
5 Extensions to the Physical Layer (PL)
5.1 Overview
43 5.2 Extensions to PL services
5.2.1 PL_SetMode
5.2.2 PL_Ready
Figure 14 – The SDCI physical layer of an FS-Master (class A)
Figure 15 – The physical layer of an FS-Device (class A)
Table 3 – PL_Ready
44 5.3 Transmitter/receiver
5.3.1 Assumptions for the expansion to OSSDe
5.3.2 OSSDe specifics
Figure 16 – Cross compatibility OSSD and OSSDe
45 Figure 17 – Principle OSSDe function
Table 4 – OSSD states and conditions
46 Figure 18 – Test pulses to detect cross connection faults
Table 5 – Cross connection faults
47 5.3.3 Start-up of an FS-Device (Ready pulse)
Figure 19 – OSSD timings
Figure 20 – Typical start-up of an OSSD sensor
Figure 21 – Start-up of an FS-Device
48 5.3.4 Electric characteristics of a receiver in FS-Device and FS-Master
5.4 Electric and dynamic characteristics of an FS-Device
Figure 22 – Switching thresholds for FS-Device and FS-Master receivers
Table 6 – Electric characteristics of a receiver
49 Figure 23 – Reference schematics (one OSSDe channel)
Figure 24 – Voltage level definitions
50 Table 7 – Electric and dynamic characteristics of the FS-Device (OSSDe)
51 5.5 Electric and dynamic characteristics of an FS-Master port (OSSDe)
Table 8 – Electric and dynamic characteristics of the Port interface
52 5.6 FS-Master port FS-DI interface
5.7 Wake-up coordination
Figure 25 – Charge capability at power-up
Figure 26 – OSSDe input filter conflict resolution
53 5.8 Fast start-up
5.9 Power supply
Figure 27 – Start-up of an FS-Device
Figure 28 – Required fast start-up timings
54 5.10 Medium
5.10.1 Constraints
5.10.2 Connectors
5.10.3 Cable characteristics
6 Extensions to SIO
7 Extensions to the data link layer (DL)
7.1 Overview
7.2 State machine of the FS-Master DL-mode handler
Table 9 – Cable characteristics
55 Figure 29 – State machine of the FS-Master DL-mode handler
56 7.3 State machine of the FS-Device DL-mode handler
Table 10 – State transition tables of the FS-Master DL-mode handler
57 Figure 30 – State machine of the FS-Device DL-mode handler
Table 11 – State transition tables of the FS-Device DL-mode handler
58 8 Extensions to the Master Configuration Manager (CM)
Figure 31 – Extension to the Configuration Manager (VerifyRecord)
59 9 Extensions of the FS-Device
9.1 Principle architecture and models
9.1.1 FS-Device architecture
Table 12 – State transition tables of the Configuration Manager
60 9.1.2 FS-Device model
Figure 32 – Principle architecture of the FS-Device
61 9.2 Parameter Manager (PM)
9.3 Process Data Exchange (PDE)
9.4 Data Storage (DS)
9.4.1 General considerations and extensions including safety
Figure 33 – The FS-Device model
62 9.4.2 Backup levels
10 Extensions of the FS-Master
10.1 Principle architecture
Table 13 – Extension to Data Storage (DS) state machine
Table 14 – Data Storage Backup Levels
63 10.2 SMI service extensions
10.2.1 Overview
Figure 34 – Principle architecture of the FS-Master
64 Table 15 – SMI services used for FS-Master
65 10.2.2 SMI_FSMasterAccess
Figure 35 – SMI service extensions
66 Table 16 – SMI_FSMasterAccess
67 10.2.3 SMI_SPDUIn
10.2.4 SMI_SPDUOut
10.2.5 SMI_FSPDInOut
68 Table 17 – SMI_FSPDInOut
69 10.3 ArgBlock extensions
10.3.1 Overview
10.3.2 FSMasterAccess
Table 18 – ArgBlock types and ArgBlockIDs
70 10.3.3 FSCPAuthenticity
10.3.4 FSPortConfigList
Table 19 – FSMasterAccess
Table 20 – FSCPAuthenticity
71 Table 21 – FSPortConfigList
73 10.3.5 FSPortStatusList
Table 22 – FSPortStatusList
74 10.3.6 SPDUIn
10.3.7 SPDUOut
Table 23 – SPDUIn
75 10.3.8 FSPDInOut
Table 24 – SPDUOut
Table 25 – FSPDInOut
76 10.4 Safety Layer Manager (SLM)
10.4.1 Purpose
10.4.2 FS_PortModes
10.4.3 FSP parameter
77 Figure 36 – FSP parameter use cases
Table 26 – Use case reference table
80 10.5 Process Data Exchange (PDE)
Figure 37 – PDE Splitter
81 10.6 Data Storage (DS)
11 Safety communication layer (SCL)
11.1 Functional requirements
11.2 Communication errors and safety measures
Figure 38 – PDE Composer
82 11.3 SCL services
11.3.1 Positioning of safety communication layers (SCL)
Table 27 – Communication errors and safety measures
83 11.3.2 FS-Master SCL services
Figure 39 – Positioning of the SDCI-FS Safety Communication Layer (SCL)
Figure 40 – FS-Master Safety Communication Layer services
84 11.3.3 FS-Device SCL services
Table 28 – SCL services of FS-Master
85 Figure 41 – FS-Device Safety Communication Layer services
Table 29 – SCL services of FS-Device
86 11.4 SCL protocol
11.4.1 Protocol phases to consider
Figure 42 – Protocol phases to consider
87 11.4.2 FS-Device faults
11.4.3 Safety PDU (SPDU)
Figure 43 – Safety PDUs of FS-Master and FS-Device
Table 30 – Protocol phases to consider
88 11.4.4 FS-Input and FS-Output data
11.4.5 Port number
11.4.6 Status and control
Table 31 – Control and counting (Control&MCnt)
Table 32 – Status and counting mirror (Status&DCnt)
89 11.4.7 CRC signature
Table 33 – MCount and DCount_i values
90 11.4.8 TADI safety considerations (informative)
Figure 44 – The 1 % share rule of IEC 61784-3:2021
91 11.4.9 Data types for SDCI-FS
Table 34 – FS process I/O data types
Table 35 – Rules for the layout of values and qualifiers
92 11.5 SCL behavior
11.5.1 General
11.5.2 SCL state machine of the FS-Master
Table 36 – Order of values and qualifier
93 Figure 45 – SCL state machine of the FS-Master
Table 37 – Definition of terms used in SCL state machine of the FS-Master
94 Table 38 – FS-Master SCL states and transitions
95 11.5.3 SCL state machine of the FS-Device
96 Figure 46 – SCL state machine of the FS-Device
Table 39 – Definition of terms used in SCL state machine of the FS-Device
97 Table 40 – FS-Device SCL states and transitions
98 11.5.4 Sequence charts for several use cases
99 Figure 47 – FS-Master and FS-Device both with power ON
100 Figure 48 – FS-Master power OFF ( ON
101 Figure 49 – FS-Device with delayed SCL start
102 Figure 50 – FS-Device with power OFF and ON
103 Figure 51 – FS-Master detects CRC signature error
104 Figure 52 – FS-Device detects CRC signature error
105 11.5.5 Monitoring of safety times
Figure 53 – Monitoring of the SCL cycle time
Table 41 – Timing constraints
106 11.5.6 Reaction in the event of a malfunction
108 11.5.7 Start-up (communication)
11.6 SCL management
11.6.1 Parameter overview (FSP and FST)
109 Figure 54 – Parameter types and assignments
110 11.6.2 Parameterization approaches
Figure 55 – FSCP-Host-centric system
111 11.7 Integrity measures
11.7.1 IODD integrity
11.7.2 Tool integrity
11.7.3 Transmission integrity
11.7.4 Verification record
112 11.7.5 Authentication
11.7.6 Storage integrity
Figure 56 – Structure of the FSP_VerifyRecord
113 11.7.7 FS I/O data structure integrity
11.7.8 Technology parameter (FST) based on IODD
Figure 57 – Start-up of SDCI-FS
114 11.7.9 Technology parameter (FST) based on existing Dedicated Tool (IOPD)
Figure 58 – Securing of FST parameters via dedicated tool
115 11.8 Creation of FSP and FST parameters
Figure 59 – Modification of FST parameters via Device Tool
116 11.9 Integration of Dedicated Tools (IOPD)
11.9.1 IOPD interface
11.9.2 Standard interfaces
Figure 60 – Creation of FSP and FST parameters
117 11.9.3 Backward channel
Figure 61 – Example of a communication hierarchy
118 11.10 Validation
11.11 Passivation
11.11.1 Motivation and means
11.11.2 Port selective (FS-Master)
Figure 62 – Motivation for Port selective passivation
119 11.11.3 Signal selective (FS-Terminal)
11.11.4 Qualifier settings in case of communication
11.11.5 Qualifier handling in case of OSSDe
Figure 63 – Qualifier handler (communication)
Figure 64 – Qualifier handler (OSSDe)
Table 42 – Qualifier bits “GOOD/BAD”
120 11.12 SCL diagnosis
Figure 65 – Qualifier behavior per FS-Master port
Table 43 – State transition Table for the qualifier behavior
121 12 Functional safe processing (FS-P)
12.1 Recommendations for efficient I/O mappings
12.2 Embedded FS controller
Figure 66 – Mapping efficiency issues
122 Annexes
Annex A (normative)Extensions to parameters
A.1 Indices and parameters for SDCI-FS
Table A.1 – Indices for SDCI-FS
123 A.2 Parameters in detail
A.2.1 FSP_Authenticity
A.2.2 FSP_Port
124 A.2.3 FSP_AuthentCRC
A.2.4 FSP_ProtVersion
A.2.5 FSP_ProtMode
A.2.6 FSP_Watchdog
Table A.2 – Coding of protocol version
Table A.3 – Coding of protocol mode
125 A.2.7 FSP_IO_StructCRC
Figure A.1 – Instance of an FS I/O data description
Table A.4 – Generic FS I/O data structure description
126 A.2.8 FSP_TechParCRC
A.2.9 FSP_ProtParCRC
A.2.10 FSP_VerifyRecord
A.2.11 FSP_TimeToReady
Figure A.2 – Example FS I/O data structure with non-safety data
127 A.2.12 FSP_MinShutDownTime
A.2.13 FSP_WCDT
A.2.14 FSP_OFDT
A.2.15 FSP_ParamDescCRC
Figure A.3 – Securing of safety parameters
128 Annex B (normative)Extensions to EventCodes
B.1 Additional FS-Device EventCodes
B.2 Additional Port EventCodes
Table B.1 – FS-Device SCL specific EventCodes
129 Table B.2 – FS-Master SCL specific EventCodes
130 Annex C (normative)Extensions to Data Types
C.1 Data types for SDCI-FS
C.2 BooleanT (bit)
Table C.1 – Data types for SDCI-FS
Table C.2 – BooleanT for SDCI-FS
Table C.3 – Example of BooleanT within a RecordT
131 C.3 IntegerT (16)
C.4 IntegerT (32)
Figure C.1 – Example of a BooleanT data structure
Table C.4 – IntegerT(16)
Table C.5 – IntegerT(16) coding
132 C.5 Safety Code
Figure C.2 – Safety Code of an output message
Figure C.3 – Safety Code of an input message
Table C.6 – IntegerT(32)
Table C.7 – IntegerT(32) coding
133 Annex D (normative)CRC generator polynomials
D.1 Overview of CRC generator polynomials
D.2 Residual error probabilities
Table D.1 – CRC generator polynomials for SDCI-FS
134 Figure D.1 – CRC-16 generator polynomial
Figure D.2 – CRC-32 generator polynomial
135 D.3 Implementation considerations
D.3.1 Overview
D.3.2 Bit shift algorithm (16 bit)
D.3.3 Lookup table (16 bit)
Figure D.3 – Bit shift algorithm in “C” language (16 bit)
Figure D.4 – CRC-16 signature calculation using a lookup table
Table D.2 – Definition of variables used in Figure D.3
136 Table D.3 – Definition of variables used in Figure D.4
Table D.4 – Lookup Table for CRC-16 signature calculation
137 D.3.4 Bit shift algorithm (32 bit)
D.3.5 Lookup table (32 bit)
Figure D.5 – Bit shift algorithm in “C” language (32 bit)
Figure D.6 – CRC-32 signature calculation using a lookup table
Table D.5 – Definition of variables used in Figure D.5
Table D.6 – Definition of variables used in Figure D.4
138 D.3.6 Seed values
Table D.7 – Lookup Table for CRC-32 signature calculation
139 D.3.7 Octet order for CRC calculation
140 Annex E (normative)IODD extensions
E.1 General
E.2 Schema
E.3 IODD constraints
E.3.1 General rules
E.3.2 Description of the IODD structure
147 E.3.3 Behavior of “Reset” SystemCommands in SDCI-FS
148 E.3.4 Profile Characteristic
E.3.5 ProcessDataInput and ProcessDataOutput
E.4 IODD conventions
E.4.1 Naming
E.4.2 Process Data (PD)
Table E.1 – Specific behavior of FS-Device “Reset” SystemCommands
149 E.4.3 IODD conventions for user interface
E.4.4 Master Tool features
E.5 Securing
E.5.1 General
150 E.5.2 DefaultValues for FSP
E.5.3 FSP_Authenticity
E.5.4 FSP_Protocol
Figure E.1 – Algorithm to build the FSP parameter CRC signatures
Table E.2 – User actions to replace DefaultValues
151 E.5.5 FSP_IO_Description
E.5.6 Sample serialization for FSP_ParamDescCRC
Table E.3 – RecordItems of FSP_Protocol where allowed values shall be serialized
Table E.4 – Sample serialization for FSP_ParamDescCRC
152 E.5.7 FST and FSP parameters and Data Storage
E.5.8 Sample IODD of an FS-Device
163 Annex F (normative)Device Tool Interface (DTI) for SDCI
F.1 Purpose of DTI
F.2 Base model
164 F.3 Invocation interface
F.3.1 Overview
Figure F.1 – Principle of DTI invocation interface
165 F.3.2 Detection of Device Tool
Figure F.2 – Structure of the registry
166 Figure F.3 – Example of a DTI registry
168 F.3.3 Program Interface Description – PID
Figure F.4 – Detection of a Device tool in registry
169 Figure F.5 – Menu for Device Tool invocation
Table F.1 – Description of PID file elements
171 F.3.4 Temporary Parameter File – TPF
172 Table F.2 – Elements of a TPF
176 F.3.5 Temporary Backchannel File – TBF
177 Table F.3 – Elements of the TBF
178 F.3.6 Temporary Acknowledgment File – TAF
F.3.7 Invocation behavior
Table F.4 – Elements of the TAF
179 F.4 Device data objects (DDO)
F.4.1 General
Table F.5 – Invocation cases and behaviors
180 F.4.2 Structure of DDO package
F.5 Communication Interface
F.5.1 General
Figure F.6 – Purpose of Device data objects (DDO)
181 F.5.2 Principle of DTI communications
Figure F.7 – Communication routes between Device Tool and Device
Figure F.8 – Routing across networks and SDCI
182 F.5.3 Gateways
F.5.4 Configuration of the Communication Server
Figure F.9 – Communication Server
183 F.5.5 Definition of the Communication Interface
F.5.6 Sequence for establishing a communication relation
Figure F.10 – Sequence chart for establishing communication
184 F.5.7 Usage of the Communication Server in stand-alone mode
Figure F.11 – Create Communication Server instance
185 F.5.8 SDCI specifics
F.5.9 Changing communication settings
Figure F.12 – Example of a Connect Request XML document for SDCI
Table F.6 – Communication Schema mapping
186 F.6 Reaction on incorrect Tool behavior
F.7 Compatibility
F.7.1 Schema validation
Table F.7 – Reaction on incorrect Tool behavior
187 F.7.2 Version policy
F.8 Scalability
F.8.1 Scalability of a Device Tool
Table F.8 – DTI conformance classes
Table F.9 – DTI feature levels of Device Tools
188 F.8.2 Scalability of a Master Tool
F.8.3 Interactions at conformance class combinations
F.9 Schema definitions
F.9.1 General
F.9.2 Schema of the PID
Figure F.13 – XML schema of the PID file
Table F.10 – Interactions at conformance class combinations
190 F.9.3 Schema of the TPF
Figure F.14 – XML schema of the TPF
192 F.9.4 Schema of the TBF
Figure F.15 – XML schema of a TBF
193 F.9.5 Schema of the TAF
194 F.9.6 Schema of DTI primitives
196 Annex G (normative)Main scenarios of SDCI-FS
G.1 Overview
Table G.1 – Main scenarios of SDCI-FS
197 G.2 Sequence chart of commissioning
198 G.3 Sequence chart of replacement
Figure G.1 – Commissioning with test and armed operation
199 G.4 Sequence chart of misconnection
Figure G.2 – FS-Device replacement
Figure G.3 – FS-Device misconnection
200 Annex H (normative)System requirements
H.1 Indicators
H.1.1 General
H.1.2 OSSDe
H.1.3 Safety communication
H.1.4 Acknowledgment request
H.2 Installation guidelines, electrical safety, and security
201 H.3 Safety function response time
H.4 Duration of demands
H.5 Maintenance and repair
H.6 Safety manual
202 Annex I (informative)Information for test and assessmentof SDCI-FS components
203 Bibliography

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