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BS EN 61784-3-8:2010

BS EN 61784-3-8:2010

$189.07

Industrial communication networks. Profiles – Functional safety fieldbuses. Additional specifications for CPF 8

Published By Publication Date Number of Pages
BSI 2010 50
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This part of the IEC 61784-3 series specifies a safety communication layer (services and protocol) based on CPF 8 of IEC 61784-1 and IEC 61158 Type 18. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer.

NOTE 1 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.

This part 1 defines mechanisms for the transmission of safety-relevant messages among participants within a distributed network using fieldbus technology in accordance with the requirements of IEC 61508 series2 for functional safety. These mechanisms may be used in various industrial applications such as process control, manufacturing automation and machinery.

This part provides guidelines for both developers and assessors of compliant devices and systems.

NOTE 2 The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system – implementation of a functional safety communication profile according to this part in a standard device is not sufficient to qualify it as a safety device.

PDF Catalog

PDF Pages PDF Title
7 CONTENTS
10 INTRODUCTION
Figures
Figure 1 – Relationships of IEC 61784-3 with other standards (machinery)
11 Figure 2 – Relationships of IEC 61784-3 with other standards (process)
13 1 Scope
2 Normative references
14 3 Terms, definitions, symbols, abbreviated terms and conventions
3.1 Terms and definitions
19 3.2 Symbols and abbreviated terms
20 3.3 Conventions
4 Overview of FSCP 8/1 (CC-Link Safety™)
21 5 General
5.1 External documents providing specifications for the profile
5.2 Safety functional requirements
5.3 Safety measures
22 Tables
Table 1 – Selection of the various measures for possible errors
23 5.4 Safety communication layer structure
24 5.5 Relationships with FAL (and DLL, PhL)
6 Safety communication layer services
6.1 General
6.2 SASEs
Figure 3 – Relationship between SCL and the other layers of IEC 61158 Type 18
25 6.3 SARs
26 6.4 Process data SAR ASEs
27 7 Safety communication layer protocol
7.1 Safety PDU format
Table 2 – M1 safety device manager attribute format
Table 3 – S1 safety device manager attribute format
Table 4 – M1 safety connection manager attribute format
28 Table 5 – S1 safety connection manager attribute format
Table 6 – M1 safety cyclic transmission attribute format
29 Table 7 – S1 safety cyclic transmission attribute format
Table 8 – M1 safety device manager attribute encoding
30 Table 9 – S1 safety device manager attribute encoding
Table 10 – M1 safety connection manager attribute encoding
Table 11 – S1 safety connection manager attribute encoding
31 Table 12 – M1 safety cyclic transmission attribute encoding
32 Table 13 – S1 safety cyclic transmission attribute encoding
33 7.2 State description
34 Figure 4 – State diagram
36 Table 14 – Safety master monitor timer operation
Table 15 – Safety slave monitor timer operation
Table 16 – Safety data monitor timer operation
37 8 Safety communication layer management
8.1 General
38 8.2 Connection establishment and confirmation processing
8.3 Safety slave verification
Table 17 – Details of connection establishment and confirmation processing
Table 18 – Details of slave information verification processing
39 9 System requirements
9.1 Indicators and switches
Table 19 – Details of safety slave parameter transmission processing
Table 20 – Monitor LEDs
40 9.2 Installation guidelines
9.3 Safety function response time
41 Table 21 – Safety function response time calculation
Table 22 – Safety function response time definition of terms
42 9.4 Duration of demands
9.5 Constraints for calculation of system characteristics
Table 23 – Number of occupied slots and safety data
43 9.6 Maintenance
9.7 Safety manual
Table 24 – Residual error rate Λ (occupied slots = 1)
Table 25 – Residual error rate Λ (occupied slots = 2)
44 10 Assessment
45 Annex A (informative) Additional information for functional safety communication profiles of CPF 8
46 Annex B (informative) Information for assessment of the functional safety communication profiles of CPF 8
47 Bibliography

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BS EN 61784-3-8:2010
$189.07