IEC 61784-3-1:2010

FOREWORD
0 Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols, abbreviated terms and
   conventions
4 Overview of FSCP 1/1 (FOUNDATION Fieldbus SIS)
5 General
6 Safety communication layer services
7 Safety communication layer protocol
8 Safety communication layer management
9 System requirements
10 Assessment
Annex A (informative) - Additional information for
        functional safety communication profiles of
        CPF 1
Annex B (informative) - Information for assessment of
        the functional safety communication profiles of
        CPF 1
Bibliography

IEC 61784-3-1:2010 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.