SN EN 60870-5-1 : 1993

Committees responsible
National foreword
Specification
Introduction
1. Scope
2. Object
3. Requirements for data transmission in telecontrol
       systems
       3.1 High data integrity and data consistency
       3.2 Short telecontrol transfer time
       3.3 Support of bit oriented (code transparent) data
           transmission
4. Quantified rating of data integrity
       4.1 Quantitative requirements for data integrity in
           telecontrol systems
5. Quantified rating of transmission efficiency
6. Transmission protocol specifications
       6.1 Physical layer
       6.2 Link layer
           6.2.1 Link service classes provided
           6.2.2 Dialogue procedures
           6.2.3 Standard frame synchronization
           6.2.4 Standard frame formats
           6.2.5 Synchronization in transmission channels using
                  switched carrier frequency
           6.2.6 Main application fields of the defined format
                  classes
           6.2.7 Use of HDLC (High level data link control)-
                  protocols
Appendices
A. Effect of signal quality supervision on transmission
     efficiency and data integrity
B. Quantitative ratings of data integrity and
     transmission efficiency
Table
1. Standard frame formats and code specifications
Figures
1. Data integrity classes
     A.1 Bit signal detection
          a) without and
          b) with signal quality supervision
     A.2 Influence of signal quality supervision on frame
          transmission efficiency and on data integrity
     B.1 Residual errors of format classes FT1.1, FT1.2, FT2
          and FT3
     B.2 Frame transmission efficiency of format classes
          FT1.1, FT1.2, FT2 and FT3

Applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes. Covers asynchronous data transmission with half duplex and duplex link protocols operating with window size one for message transfers. Covers requirements for data transmission in telecontrol systems, high data integrity and data consistency, short telecontrol transfer time, support of bit oriented data transmission, quantified rating of data integrity, quantitative requirements for data integrity in telecontrol systems, quantified rating of transmission efficiency, transmission protocol specifications, physical layer, link layer, link service classes provided, dialogue procedures, standard frame synchronization and formats.