IEC 61784-3-1:2010(E) specifies a safety communication layer (services and protocol) based on CPF 1 of IEC 61784-1 and IEC 61158 Types 1 and 9. It identifies the principles for functional safety communications defined in IEC 61784-3 that are relevant for this safety communication layer. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. The main changes with respect to the previous edition are: – updates in relation with changes in IEC 61784-3; – adjustment of Figure 5; – change of sequence number from two octets to four octets in 7.2.2 to match the final protocol from the consortium; – addition of details for time synchronization in 7.2.4; – addition of information for safety response time in 9.3; – addition of information in constraints for calculation of system characteristics in 9.5.

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9	CONTENTS
14	0 Introduction 0.1 General Figures Figure 1 – Relationships of IEC 61784-3 with other standards (machinery)
15	Figure 2 – Relationships of IEC 61784-3 with other standards (process)
16	0.2 Patent declaration
17	1 Scope 2 Normative references
18	3 Terms, definitions, symbols, abbreviated terms and conventions 3.1 Terms and definitions
24	3.2 Symbols and abbreviated terms
25	3.3 Conventions Figure 3 – Example state diagram
26	4 Overview of FSCP 1/1 (Foundation Fieldbus™ SIS) 4.1 General Figure 4 – Use of colors in figures Tables Table 1 – Example state transition table
27	4.2 Key concepts of FSCP 1/1 Figure 5 – Scope of FSCP 1/1
28	4.3 Key components of FSCP 1/1
29	Figure 6 – FSCP 1/1 architecture (H1) Figure 7 – Black channel
30	4.4 Relationship to the ISO OSI basic reference model 5 General 5.1 External documents providing specifications for the profile 5.2 Safety functional requirements
31	5.3 Safety measures
32	5.4 Safety communication layer structure Table 2 – Safety measures and possible communication errors
33	Figure 8 – FSCP 1/1 in system architecture Figure 9 – FSCP 1/1 H1 device
34	5.5 Relationships with FAL (and DLL, PhL) Figure 10 – FSCP 1/1 protocol layers Figure 11 – Relationship between FSCP 1/1 and the other layers of IEC 61158 Type 1
35	6 Safety communication layer services 6.1 Application Process (AP) Table 3 – Data types used within FSCP 1/1
36	6.2 Function block application processes
37	Figure 12 – Key write-lock Figure 13 – Password write-lock
38	Table 4 – Fault state behaviour
41	6.3 Device to device communications Figure 14 – Example of FSCP 1/1 communication
42	6.4 Profiles
43	6.5 Device descriptions 6.6 Common file formats Figure 15 – Example of device description
44	6.7 Configuration information 7 Safety communication layer protocol 7.1 Safety PDU format
47	7.2 Protocol extensions for use in safety-related systems
48	Figure 16 – Safety PDU showing virtual content Figure 17 – Safety PDU showing duplication of data and addition of CRC Figure 18 – State transition diagram for a FSCP 1/1 Publisher Table 5 – Publisher states
49	Table 6 – Publisher state table – Received transitions Table 7 – Publisher state table – Internal transitions
50	Figure 19 – Safety PDU showing duplication of data and addition of CRC Figure 20 – Safety PDU showing virtual content Table 8 – Subscriber states
51	Figure 21 – State transition diagram for a FSCP 1/1 subscriber Table 9 – Subscriber state table – Received transitions
52	Table 10 – Subscriber state table – Internal transitions
53	Figure 22 – Safety PDU showing virtual content Figure 23 – Safety PDU showing virtual content with sub index Figure 24 – Safety PDU showing duplication of data, addition of sequence number and CRC Table 11 – Server states during read operations
54	Figure 25 – State transition diagram for a FSCP 1/1 Server during read operations Table 12 – Received transitions for a FSCP 1/1 Server during read operations
55	Figure 26 – Safety PDU showing duplication of data and addition of sequence number and CRC Figure 27 – Example of FSCP 1/1 write Figure 28 – Example of FSCP 1/1 write with sub index
56	Figure 29 – State transition diagram for a FSCP 1/1 Server during write operations Table 13 – States of a FSCP 1/1 server during write operations Table 14 – Received transitions for a FSCP 1/1 Server during write operations
57	Figure 30 – Safety PDU showing duplication of data and CRC
59	7.3 Communications entity
60	8 Safety communication layer management 8.1 Overview 8.2 SMK communications 8.3 FMS services 8.4 SMK services 8.5 Safety communication layer configuration and start-up
61	9 System requirements 9.1 Indicators and switches 9.2 Installation guidelines 9.3 Safety function response time Figure 31 – Example of safety function response time components
62	9.4 Duration of demands 9.5 Constraints for calculation of system characteristics Figure 32 – Example FSCP 1/1 network topology
63	Table 15 – Values used for calculation of residual error rate Table 16 – Values of RSL (Pe) for different values of n
64	9.6 Maintenance 9.7 Safety manual 10 Assessment
65	Annex A (informative) Additional information for functional safety communication profiles of CPF 1
68	Table A.1 – Fault conditions arising from locations beyond the output function block
69	Annex B (informative) Information for assessment of the functional safety communication profiles of CPF 1
70	Bibliography

Published By	Publication Date	Number of Pages
BSI	2010	74


PDF Format	Searchable	Printable	Preview Now

Status	Definitive
Pages	74
Publication Date	2010-09-30
ISBN	978 0 580 72027 7
Standard Number	BS EN 61784-3-1:2010
Title	Industrial communication networks. Profiles – Functional safety fieldbuses. Additional specifications for CPF 1
Identical National Standard Of	IEC 61784-3-1:2010, EN 61784-3-1:2010
Replaces	BS EN 61784-3-1:2008
Descriptors	Data transfer, Industrial, Safety, Computer networks, Data transmission, Data link layer (OSI), Automatic control systems, Communication networks, Process control, Data processing, Bus networks, Fieldbus, Interfaces (data processing), Open systems interconnection
Publisher	BSI
Committee	GEL/65/3
ICS Codes	35.100.05 - Multilayer applications

BS EN 61784-3-1:2010

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