GB/T 37085.308-2025Industrial communication network - Profiles - Part 3-8: Functional safety communication profile of CC-Link family (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is part 308 of GB/T 37085 Industrial Communication Network Specifications. GB/T 37085 has been published in the following parts.

--- Part 3-8.CC-Likn series functional safety communication profile.

This document replaces GB/Z 37085-2018 "Industrial Communication Network Specification Part 3-8.CC-LINK Series Functional Safety Communication Compared with GB/Z 37085-2018, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) Deleted the description of availability in the Terms and Definitions (see 3.1.1.3 of the 2018 edition);

b) Deleted the description of frames in the Terms and Definitions (see 3.1.1.19 of the 2018 edition);

c) Deleted the description of nuisance tripping in the terms and definitions (see 3.1.1.27 of the 2018 edition);

d) Deleted the description of protective extra-low voltage in the terms and definitions (see 3.1.1.29 of the 2018 edition);

e) Deleted the description of reliability in the Terms and Definitions (see 3.1.1.32 of the 2018 edition);

f) The description of safety extra-low voltage in the terms and definitions has been deleted (see 3.1.1.41 of the 2018 edition);

g) Added the relevant content of cross-check redundancy of the secure communication layer protocol of FSCP8/1 (see 11.7.2.6.7);

h) Changed the description of safety function response time in the system requirements of FSCP8/1.Functional safety response time was moved to

11.9.3.2 Time calculation (see 11.9.3.1, 11.9.3.1 of the 2018 edition);

i) Deleted the description of the residual rate in the constraints of system characteristic calculation (see 11.9.5.2 of the 2018 edition);

j) Changed the description of the FSCP8/1 Safety Manual (see 11.9.7, 2018 Edition);

k) The description of corruption in FSCP8/2 was modified (see 12.5.3.2, 12.5.3.2 of the 2018 edition);

l) Added the information about Applicationbit, SubCIDactivebit and Sub Description of the CID (see 12.7.1.3, 12.7.1.3 of the 2018 edition);

m) Changed the description of the secure initialization in the Secure FAL Service Protocol Machine (SESPM) behavior (see 12.7.2.2.1, 2018 Version 12.7.2.2.1);

n) Changed the description of FSCP8/2 clock offset correction (see 12.7.2.5, 12.7.2.5 of the 2018 edition);

o) Changed the description of alowable_refresh_interval in FSCP8/2 (see 12.8.1.4, 2018 edition) 12.8.1.4);

p) Changed the description of the constraints on system characteristic calculations in the system requirements of FSCP8/2 (see 12.9.5, 2018) Version 12.9.5).

This document is equivalent to IEC 61784-3-8:2021 "Industrial Communication Network Profile Part 3-8.Functional Safety Fieldbus Applications" Supplementary Specifications for CPF8.

The following minimal editorial changes have been made to this document.

---Modified the standard name.

Introduction

The IEC 61158 fieldbus standard and its supporting standards IEC 61784-1 and IEC 61784-2 define a set of communication protocols to Realize distributed control of automation applications. Fieldbus technology has been widely accepted and proven to be feasible. Therefore, many fieldbus technologies the technology is constantly improving, covering areas that have not yet been standardized, such as real-time, functional safety-related and information security-related applications.

The IEC 61784-3 series of standards is based on the IEC 61508 series of standards, which explains the principles of functional safety communication and specifies the IEC IEC 61784-1, IEC 61784-2 and IEC 61158 series of standards for communication profiles and protocol layers (profiles and corresponding protocols) it does not include electrical safety and intrinsic safety, nor does it include information security, and does not provide any information security Require.

Figure 1 shows the relationship between the IEC 61784-3 series of standards and related safety and fieldbus standards in the machinery environment.

Note. GB 28526-2012 6.7.6.4 (high complexity) and 6.7.8.1.6 (low complexity) specify the relationship between PL (category) and SIL.

Figure 1 Relationship between IEC 61784-3 and other standards (mechanics)

Figure 2 shows the relationship between the IEC 61784-3 series of standards and the relevant safety and fieldbus standards in the process environment.

a For use in the specified electromagnetic environment, otherwise see IEC 61326-3-1.

Figure 2 Relationship between IEC 61784-3 and other standards (processes)

The safety communication layer implemented according to the IEC 61508 series of standards is an integral part of the safety-related system and provides it provides the necessary reliability for the transmission of messages (information) between two or more participants on the fieldbus, or for the prevention of fieldbus errors or failures.

The security behavior in the document provides sufficient confidence.

The safety communication layer specified in the IEC 61784-3 series of standards enables fieldbus to be used in applications requiring functional safety to achieve safety integrity.

The SIL level is specified by its corresponding functional safety communication profile.

The final SIL claim of a system depends on the implementation of the functional safety communication profile selected within the system - in standard equipment Implementing a functional safety communication profile is not sufficient to prove that the device is a safety device.

The IEC 61784-3 series of standards describes.

--- Implement the basic principles of the IEC 61508 series of standards for safety-related data communications, including possible transmission failures, remedial measures, implementation and consideration of impacts on data integrity;

--- Functional safety communication profiles for multiple communication profile families in IEC 61784-1 and IEC 61784-2, including support for IEC 61158 series A security layer extension to the communication services and protocols part of the standard.

The Industrial Network Functional Safety Communication Specification integrates safety communication and standard communication through unified standards, reducing wiring costs and improving System flexibility, while ensuring the safety of equipment and personnel in production, supporting the upgrade of industrial automation to intelligentization, and further promoting my country's industrial the globalization of safety standards is of great significance. GB/T 37085 "Industrial Communication Network Specifications" is planned to consist of one part.

--- Part 3-8.CC-Link series functional safety communication profile. The purpose is to provide a safety-related system for two or more fieldbuses.

The transmission of messages (information) between multiple participants provides the necessary reliability for safety in the event of fieldbus errors or failures.

The behavior provides sufficient credibility.

Industrial Communication Network Profile Part 3-8.

CC-Link series functional safety communication profile

1 Scope

This document specifies the safety of CPF8 based on IEC 61784-1, IEC 61784-2 and IEC 61158 Type 18 and Type 23.

Communication layer (services and protocols), and identify the functional safety communication principles defined in IEC 61784-3 and the safety communication layer in this document this secure communication layer is only implemented in secure devices.

Note 1.This does not include electrical safety and intrinsic safety. Electrical safety involves hazards such as electric shock. Intrinsic safety involves potentially explosive atmospheres.

Danger.

This document defines a mechanism for transmitting safety-related messages between participants in a distributed network using fieldbus technology.

These mechanisms can be used in various industrial applications such as process control, manufacturing automation, Automation and machinery.

This document provides guidance to developers and evaluators of devices and systems that comply with this document.

NOTE 2 The final SIL claim of a system depends on the implementation of the functional safety communication profile selected within the system - in standard equipment according to this document Implementing a functional safety communication profile is not sufficient to qualify a device as a safety device.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

IEC 61131-2 Industrial process measurement and control programmable controllers Part 2: Equipment requirements and tests (Industrial-tests) Note. GB/T 15969.2-2024 Programmable controllers Part 2: Equipment requirements and tests (IEC 61131-2:2017, IDT) IEC 61158-2 Industrial communication network fieldbus specification Part 2: Physical layer specification and service definition (Industrialcom-Note. GB/T 16657.2-2008 Industrial Communication Network Fieldbus Specification Part 2: Physical Layer Specification and Service Definition (IEC 61158-2.

2007, IDT)

IEC 61158-3-18 Industrial Communication Network Fieldbus Specification Part 3-18.Data Link Layer Service Definition Type 18 definition-Type18elements) IEC 61158-4-18 Industrial Communication Network Fieldbus Specification Part 4-18.Data Link Layer Protocol Specification Type 18 specification-Type18elements) IEC 61158-5-18 Industrial Communication Network Fieldbus Specification Part 5-18.Application Layer Service Definition Type 18 Elements