IEC TR 60870-1-1:1988

FOREWORD
PREFACE
INTRODUCTION
1 Scope
2 Object
3 General aspects related to telecontrol systems
3.1 The role of telecontrol systems in power systems operation
3.2 The role of the data transmission system
3.3 Requirements which determine the design of a telecontrol
      system
3.4 Main differences between telecontrol systems and local control
      systems
4 Structures and configurations of telecontrol systems
4.1 Interrelation of process network architectures and telecontrol
      system configurations
4.2 Basic functional modules of a point-to-point telecontrol
      system
4.3 Functional software modules
4.4 Configuration of telecontrol systems
5 Functions of telecontrol systems
5.1 Layered structure of telecontrol functions
5.2 Application functions
5.3 Operational processing functions
5.4 Presentation of the process information to the operator
6 Transmission of telecontrol data
6.1 The role of data transmission standards
6.2 Data transport, network, link and physical transmission
      functions
6.3 Characteristics of telecontrol data transmission
6.4 Types of traffic in transmission channels
6.5 Telecommunication systems
6.6 Protection of messages against noise on the transmission
      channel
TABLES
FIGURES

Specifies classes for environmental conditions under which telecontrol equipment has to operate. Gives an overall view of the functional elements contributing to basic structures and to the choice of telecontrol system configurations.It deals with functions which are typical for any process to be monitored and controlled but emphasizes the specific problems which characterize geographically widespread processes, such as the dominant influence of telecommunications links with restricted bandwidth and often low signal-to-noise ratio. However, this report serves only as an introduction to the detailed standards and recommendations laid down in Parts 2-5 of IEC 60870.