BS EN 61784-3:2010
$198.66
Industrial communication networks. Profiles – Functional safety fieldbuses. General rules and profile definitions
| Published By | Publication Date | Number of Pages |
| BSI | 2010 | 66 |
This part of the IEC 61784-3 series explains some common principles than can be used in the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of IEC 61508 series1 for functional safety. These principles can be used in various industrial applications such as process control, manufacturing automation and machinery.
This part2 and the IEC 61784-3-x parts specify several functional safety communication profiles based on the communication profiles and protocol layers of the fieldbus technologies in IEC 61784-1, IEC 61784-2 and the IEC 61158 series.
NOTE 1 Other safety-related communication systems meeting the requirements of IEC 61508 series may exist that are not included in this standard.
NOTE 2 It does not cover electrical safety and intrinsic safety aspects. Electrical safety relates to hazards such as electrical shock. Intrinsic safety relates to hazards associated with potentially explosive atmospheres.
All systems are exposed to unauthorized access at some point of their life cycle. Additional measures need to be considered in any safety-related application to protect fieldbus systems against unauthorized access. The IEC 62443 series will address many of these issues; the relationship with the IEC 62443 series is detailed in a dedicated subclause of this part.
NOTE 3 Additional profile specific requirements for security may also be specified in IEC 61784-43 [10].
NOTE 4 Implementation of a functional safety communication profile according to this part in a device is not sufficient to qualify it as a safety device, as defined in IEC 61508 series.
NOTE 5 The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | CONTENTS 0 Introduction 0.1 General 0.2 Patent declaration |
| 12 | Figures Figure 1 ā Relationships of IEC 61784-3 with other standards (machinery) |
| 13 | Figure 2 ā Relationships of IEC 61784-3 with other standards (process) |
| 15 | 1 Scope 2 Normative references |
| 17 | 3 Terms, definitions, symbols, abbreviated terms and conventions 3.1 Terms and definitions |
| 23 | 3.2 Symbols and abbreviated terms |
| 24 | 4 Conformance |
| 25 | 5 Basics of safety-related fieldbus systems 5.1 Safety function decomposition 5.2 Communication system FigureĀ 3 ā Safety communication as a part of a safety function |
| 26 | FigureĀ 4 ā Example model of a functional safety communication system |
| 27 | 5.3 Communication errors FigureĀ 5 ā Example of safety function response time components |
| 28 | 5.4 Deterministic remedial measures |
| 30 | 5.5 Relationships between errors and safety measures |
| 31 | 5.6 Data integrity considerations Tables TableĀ 1 ā Overview of the effectiveness of the various measures on the possible errors |
| 32 | TableĀ 2 ā Definition of items used for calculation of the residual error rate |
| 33 | 5.7 Relationship between functional safety and security FigureĀ 6 ā Example application TableĀ 3 ā Relationship of residual error rate to SIL level |
| 34 | 5.8 Boundary conditions and constraints 5.9 Installation guidelines 5.10 Safety manual 5.11 Safety policy |
| 35 | 6 Communication Profile Family 1 (Foundationā¢ Fieldbus) ā Profiles for functional safety 6.1 Functional Safety Communication Profile 1/1 6.2 Technical overview |
| 36 | 7 Communication Profile Family 2 (CIPā¢) ā Profiles for functional safety 7.1 Functional Safety Communication Profile 2/1 7.2 Technical overview FigureĀ 7 ā Scope of FSCPĀ 1/1 |
| 37 | FigureĀ 8 ā Relationship of Safety Validators |
| 38 | 8 Communication Profile Family 3 (PROFIBUSā¢, PROFINETā¢) ā Profiles for functional safety 8.1 Functional Safety Communication Profile 3/1 8.2 Technical overview |
| 39 | FigureĀ 9 ā Basic communication preconditions for FSCPĀ 3/1 FigureĀ 10 ā Structure of a FSCPĀ 3/1 safety PDU |
| 40 | 9 Communication Profile Family 6 (INTERBUSĀ®) ā Profiles for functional safety 9.1 Functional Safety Communication Profile 6/7 FigureĀ 11 ā Safe communication modes |
| 41 | 9.2 Technical overview FigureĀ 12 ā FSCPĀ 6/7 communication preconditions TableĀ 4 ā Overview of profile identifier usable for FSCPĀ 6/7 |
| 42 | 10 Communication Profile Family 8 (CC-Linkā¢) ā Profiles for functional safety 10.1 Functional Safety Communication Profile 8/1 10.2 Technical overview |
| 43 | 11 Communication Profile Family 12 (EtherCATā¢) ā Profiles for functional safety 11.1 Functional Safety Communication Profile 12/1 11.2 Technical overview FigureĀ 13 ā Basic FSCPĀ 12/1 system |
| 44 | 12 Communication Profile Family 13 (Ethernet POWERLINKā¢) ā Profiles for functional safety 12.1 Functional Safety Communication Profile 13/1 12.2 Technical overview |
| 45 | 13 Communication Profile Family 14 (EPAĀ®) ā Profiles for functional safety 13.1 Functional Safety Communication Profile 14/1 FigureĀ 14 ā Producer consumer example FigureĀ 15 ā Client server example |
| 46 | 13.2 Technical overview FigureĀ 16 ā FSCPĀ 14/1 safety communication architecture |
| 47 | Annex A (informative) Example functional safety communication models FigureĀ A.1 ā Model A |
| 48 | FigureĀ A.2 ā Model B FigureĀ A.3 ā Model C |
| 49 | FigureĀ A.4 ā Model D |
| 50 | Annex B (informative) A safety communication channel model using CRC-based error checking FigureĀ B.1 ā Communication channel with perturbation |
| 51 | FigureĀ B.2 ā Binary symmetric channel (BSC) |
| 52 | FigureĀ B.3 ā Example of a block with message and CRC bits (redundancy code) FigureĀ B.4 ā Block codes for error detection |
| 53 | FigureĀ B.5 ā Proper and improper CRC polynomials TableĀ B.1 ā Example dependency dmin and block length n |
| 55 | Annex C (informative) Structure of technology-specific parts TableĀ C.1 ā Common subclause structure for technology-specific parts |
| 57 | Annex D (informative) Assessment guideline |
| 59 | FigureĀ D.1 ā Basic Markov model |
| 62 | Bibliography |
