{"id":417414,"date":"2024-10-20T06:15:53","date_gmt":"2024-10-20T06:15:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61784-3-172017\/"},"modified":"2024-10-26T11:39:51","modified_gmt":"2024-10-26T11:39:51","slug":"bs-en-61784-3-172017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61784-3-172017\/","title":{"rendered":"BS EN 61784-3-17:2017"},"content":{"rendered":"

This part of the IEC 61784-3 series specifies a safety communication layer (services and protocol) based on CPF 17 of IEC 61784-2 (CP 17\/1) and IEC 61158 Type 21. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This safety communication layer is intended for implementation in safety devices only.<\/p>\n

\n

NOTE 1 It does not cover electrical safety and intrinsic safety aspects. Electrical safety is related to hazards such as electrical shock. Intrinsic safety is related to hazards associated with potentially explosive atmospheres.<\/p>\n<\/blockquote>\n

This part 1<\/sup> 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<\/sup> for functional safety. These mechanisms may be used in various industrial applications such as process control, manufacturing automation, and machinery.<\/p>\n

This part provides guidelines for both developers and assessors of compliant devices and systems.<\/p>\n

\n

NOTE 2 The resulting SIL claim of a system depends on 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 for it to qualify as a safety device.<\/p>\n<\/blockquote>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
7<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
10<\/td>\nFOREWORD <\/td>\n<\/tr>\n
12<\/td>\nFigures
Figure 1 \u2013 Relationships of IEC 617843 with other standards (machinery) <\/td>\n<\/tr>\n
13<\/td>\nFigure 2 \u2013 Relationships of IEC 617843 with other standards (process) <\/td>\n<\/tr>\n
15<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
16<\/td>\n3 Terms, definitions, symbols, abbreviated terms, and conventions
3.1 Terms and definitions
3.1.1 Common terms and definitions <\/td>\n<\/tr>\n
22<\/td>\n3.1.2 CPF 17: Additional terms and definitions
3.2 Symbols and abbreviated terms
3.2.1 Common symbols and abbreviated terms <\/td>\n<\/tr>\n
23<\/td>\n3.2.2 CPF 17: Additional symbols and abbreviated terms
3.3 Conventions
4 Overview of FSCP 17\/1 (RAPIEnet Safety\u2122) <\/td>\n<\/tr>\n
24<\/td>\nFigure 3 \u2013 Communication relationships among FSCP 17 devices <\/td>\n<\/tr>\n
25<\/td>\n5 General
5.1 External documents providing specifications for the profile
5.2 Safety functional requirements
5.3 Safety measures
5.3.1 General <\/td>\n<\/tr>\n
26<\/td>\n5.3.2 (Virtual) sequence number
5.3.3 Time expectation with watchdog
5.3.4 Connection authentication
5.3.5 Feedback message
5.3.6 Data integrity assurance
Tables
Table 1 \u2013 Deployed measures to manage errors <\/td>\n<\/tr>\n
27<\/td>\n5.4 Safety communication layer structure
5.4.1 Principle of FSCP 17\/1 safety communications
5.4.2 CPF 17 communication structures
5.5 Relationships with FAL (and DLL, PhL)
5.5.1 General
Figure 4 \u2013 Safety layer architecture <\/td>\n<\/tr>\n
28<\/td>\n5.5.2 Data types
6 Safety communication layer services
6.1 Overview
6.2 Functional Safety connection
6.2.1 General
6.2.2 Initiator class specification <\/td>\n<\/tr>\n
29<\/td>\n6.2.3 Responder-class specification <\/td>\n<\/tr>\n
30<\/td>\n6.2.4 Sender class specification <\/td>\n<\/tr>\n
32<\/td>\n6.2.5 Receiver class specification <\/td>\n<\/tr>\n
34<\/td>\n6.3 Functional Safety data transmission service
6.4 Functional Safety connection relation
Figure 5 \u2013 Functional Safety Cycle <\/td>\n<\/tr>\n
35<\/td>\n7 Safety communication layer protocol
7.1 Safety PDU format
7.1.1 General
Figure 6 \u2013 Connection relationships among FSCP 17\/1 devices
Figure 7 \u2013 Functional Safety PDU for CPF 17 over type 21 PDU <\/td>\n<\/tr>\n
36<\/td>\n7.1.2 FSPDU command
7.1.3 Authentication key
7.1.4 FSPDU CRC
Table 2 \u2013 General FSPDU
Table 3 \u2013 FSPDU command <\/td>\n<\/tr>\n
37<\/td>\nFigure 8 \u2013 FSPDU CRC code generation process <\/td>\n<\/tr>\n
38<\/td>\nFigure 9 \u2013 Example of sequence number changing <\/td>\n<\/tr>\n
39<\/td>\n7.2 FSCP 17\/1 communication procedure
7.2.1 FSCP 17\/1 device states
Figure 10 \u2013 CRC comparison operation <\/td>\n<\/tr>\n
40<\/td>\nFigure 11 \u2013 FSCP 17\/1 device states <\/td>\n<\/tr>\n
41<\/td>\nTable 4 \u2013 FSPDU with 4 octets of safety data and RESET command after restart (reset connection) or error
Table 5 \u2013 FSPDU with 4 octets of safety data and RESET commandto acknowledge a reset command from the Initiator <\/td>\n<\/tr>\n
42<\/td>\nTable 6 \u2013 Connection request PDU for the Initiator in CONNECTION state
Table 7 \u2013 Connection response PDU for the Responder in CONNECTION state <\/td>\n<\/tr>\n
43<\/td>\nTable 8 \u2013 Safety data transferred in the SET_PARA state
Table 9 \u2013 Sending FSPDU with 6 octets of safety data from the Initiator in SET_PARA state <\/td>\n<\/tr>\n
44<\/td>\nTable 10 \u2013 Expected FSPDU with 6 octets of safety data from the Responder in SET_PARA state
Table 11 \u2013 Safety data from the Initiator in the WAIT_PARA state <\/td>\n<\/tr>\n
45<\/td>\nTable 12 \u2013 Sending FSPDU with 6 octets of safety data from the Initiator in the WAIT_PARA state
Table 13 \u2013 Receiving FSPDU with 6 octets of safety data from the Responder in the WAIT_PARA state <\/td>\n<\/tr>\n
46<\/td>\nTable 14 \u2013 FSPDU of Safety data in the DATA state
Table 15 \u2013 Example of 4 octets of safety data from a Sender
Table 16 \u2013 Example of ACK PDU from the Receiver with 4 octets of safety data <\/td>\n<\/tr>\n
47<\/td>\n7.3 Response to communication errors
7.3.1 General
7.4 State table for SCL of CPF 17
7.4.1 General
Table 17 \u2013 Functional Safety communication errors
Table 18 \u2013 Functional Safety communication error codes <\/td>\n<\/tr>\n
48<\/td>\n7.4.2 Events
Figure 12 \u2013 State diagram for Functional Safety device
Table 19 \u2013 States of the Functional Safety Initiator
Table 20 \u2013 States of the Functional Safety Responder <\/td>\n<\/tr>\n
49<\/td>\n7.4.3 State table for Initiator
Figure 13 \u2013 State diagram for Initiator
Table 21 \u2013 Events in the Functional Safety state <\/td>\n<\/tr>\n
58<\/td>\n7.4.4 State table for Responder
Figure 14 \u2013 State diagram for Responder <\/td>\n<\/tr>\n
67<\/td>\n8 Safety communication layer management
8.1 FSCP 17\/1 parameter handling
8.2 Functional Safety communication parameters
9 System requirements
9.1 Indicators and switches
9.2 Installation guidelines
9.3 Safety function response time
Table 22 \u2013 Functional Safety communication parameters <\/td>\n<\/tr>\n
68<\/td>\nFigure 15 \u2013 Safety function response time <\/td>\n<\/tr>\n
70<\/td>\n9.4 Duration of demands
9.5 Constraints for calculation of system characteristics
9.5.1 General
9.5.2 Number of devices
9.5.3 Probabilistic consideration <\/td>\n<\/tr>\n
71<\/td>\n9.6 Maintenance
9.7 Safety manual
10 Assessment
Figure 16 \u2013 Residual error rate of FSCP 17\/1 <\/td>\n<\/tr>\n
72<\/td>\nAnnex A (informative) Additional information for functional safety communication profiles of CPF 17
A.1 Hash function calculation <\/td>\n<\/tr>\n
73<\/td>\nA.2 \u2026
Table A.1 \u2013 the lookup table for FSCP 17\/1 <\/td>\n<\/tr>\n
74<\/td>\nAnnex B (informative) Information for assessment of the functional safety communication profiles of CPF 17 <\/td>\n<\/tr>\n
75<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Industrial communication networks. Profiles – Functional safety fieldbuses. Additional specifications for CPF 17<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n78<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":417423,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[385,2641],"product_tag":[],"class_list":{"0":"post-417414","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-040-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/417414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/417423"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=417414"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=417414"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=417414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}