指定远程控制应用中链路加物理层提供的服务的基本要求。特别是，它规定了满足特定数据完整性要求的可变和固定长度数据帧的编码、格式化和同步标准。它是适用于远动设备系统的一系列标准之一。本标准与IEC 60870-5-1:1990相同，并根据IEC 60870-5-1:1990复制。

Specifies the basic requirements for services to be provided by the link plus physical layers, for telecontrol applications. In particular it specifies Standards on coding, formatting and synchronizing data frames of variable and fixed lengths which meet specified data integrity requirements. It is one of a series of Standards applicable to telecontrol equipment systems. This Standard is identical with and has been reproduced from IEC 60870-5-1:1990.