指定遥控设备必须运行的环境条件等级。给出了对基本结构和远动系统配置选择有帮助的功能元件的总体视图。 它涉及的功能对于任何需要监控和控制的过程来说都是典型的，但强调的是在地理上广泛存在的过程所特有的特定问题，例如带宽受限且信噪比通常较低的电信链路的主要影响。然而，本报告仅作为IEC 60870第2-5部分中规定的详细标准和建议的介绍。

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.