IEC 61784-3-8:2010

Industrial communication networks - Profiles - Part 3-8: Functional safety fieldbuses - Additional specifications for CPF 8

IEC 61784-3-8:2010(E) 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.

General Information

• Status: Published
• Publication Date: 28-Jun-2010
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: SC 65C - Industrial networks
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Jul-2016

Relations

• Revised: IEC 61784-3-8:2016 - Industrial communication networks - Profiles - Part 3-8: Functional safety fieldbuses - Additional specifications for CPF 8
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61784-3-8 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 3-8: Functional safety fieldbuses – Additional specifications for CPF 8

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IEC 61784-3-8 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 3-8: Functional safety fieldbuses – Additional specifications for CPF 8

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 25.040.40; 35.100.05 ISBN 978-2-88910-980-7
– 2 – 61784-3-8 © IEC:2010(E)
CONTENTS
FOREWORD.5

INTRODUCTION.7

1 Scope.10

2 Normative references .10

3 Terms, definitions, symbols, abbreviated terms and conventions .11

3.1 Terms and definitions .11

3.1.1 Common terms and definitions .11

3.1.2 CPF 8: Additional terms and definitions .16
3.2 Symbols and abbreviated terms.16
3.2.1 Common symbols and abbreviated terms .16
3.2.2 CPF 8: Additional symbols and abbreviated terms .17
3.3 Conventions .17
4 Overview of FSCP 8/1 (CC-Link Safety™) .17
5 General .18
5.1 External documents providing specifications for the profile.18
5.2 Safety functional requirements .18
5.3 Safety measures .18
5.3.1 General .18
5.3.2 Sequence number .19
5.3.3 Time expectation .19
5.3.4 Connection authentication .20
5.3.5 Feedback message .20
5.3.6 Different data integrity assurance system .20
5.4 Safety communication layer structure .20
5.5 Relationships with FAL (and DLL, PhL) .21
5.5.1 Overview .21
5.5.2 Data types .21
6 Safety communication layer services .21
6.1 General .21
6.2 SASEs.21
6.2.1 M1 safety device manager class specification.21
6.2.2 S1 safety device manager class specification .22

6.3 SARs.22
6.3.1 M1 safety connection manager class .22
6.3.2 S1 safety connection manager class.22
6.4 Process data SAR ASEs.23
6.4.1 M1 safety cyclic transmission class specification .23
6.4.2 S1 safety cyclic transmission class specification.23
7 Safety communication layer protocol .24
7.1 Safety PDU format .24
7.1.1 General .24
7.1.2 Abstract syntax.24
7.1.3 Transfer syntax.26
7.2 State description .30
7.2.1 Overview .30
7.2.2 Idle.31

61784-3-8 © IEC:2010(E) – 3 –
7.2.3 FAL running.31

7.2.4 SCL running .32

7.2.5 Fail safe .32

7.2.6 Safety data transmission and processing.32

7.2.7 Forced termination .34

8 Safety communication layer management.34

8.1 General .34

8.2 Connection establishment and confirmation processing.35

8.3 Safety slave verification .35

8.3.1 General .35
8.3.2 Safety slave information verification process .35
8.3.3 Safety slave parameter transmission .35
9 System requirements.36
9.1 Indicators and switches .36
9.1.1 Switches.36
9.1.2 Indicators .36
9.2 Installation guidelines.37
9.3 Safety function response time .37
9.3.1 General .37
9.3.2 Time calculation .37
9.4 Duration of demands .39
9.5 Constraints for calculation of system characteristics.39
9.5.1 System characteristics.39
9.5.2 Residual error rate (Λ) .39
9.6 Maintenance.40
9.7 Safety manual .40
10 Assessment.41
Annex A (informative) Additional information for functional safety communication
profiles of CPF 8.42
A.1 Hash function calculation.42
A.2 … .42
Annex B (informative) Information for assessment of the functional safety
communication profiles of CPF 8 .43
Bibliography.44

Table 1 – Selection of the various measures for possible errors.19
Table 2 – M1 safety device manager attribute format .24
Table 3 – S1 safety device manager attribute format .24
Table 4 – M1 safety connection manager attribute format .24
Table 5 – S1 safety connection manager attribute format.25
Table 6 – M1 safety cyclic transmission attribute format .25
Table 7 – S1 safety cyclic transmission attribute format .26
Table 8 – M1 safety device manager attribute encoding.26
Table 9 – S1 safety device manager attribute encoding .27
Table 10 – M1 safety connection manager attribute encoding .27
Table 11 – S1 safety connection manager attribute encoding.27

– 4 – 61784-3-8 © IEC:2010(E)
Table 12 – M1 safety cyclic transmission attribute encoding .28

Table 13 – S1 safety cyclic transmission attribute encoding.29

Table 14 – Safety master monitor timer operation .33

Table 15 – Safety slave monitor timer operation .33

Table 16 – Safety data monitor timer operation.33

Table 17 – Details of connection establishment and confirmation processing.35

Table 18 – Details of slave information verification processing.35

Table 19 – Details of safety slave parameter transmission processing .36

Table 20 – Monitor LEDs .36
Table 21 – Safety function response time calculation.
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