DIN EN 60870-5-4-1994 远动设备和系统.第5部分:传输协议.第4节:应用信息元素的定义和编码
Telecontrol equipment and systems - Part 5: Transmission protocols; section 4: Definition and coding of application information elements (IEC 60870-5-4:1993); German version EN 60870-5-4:1993
The document applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes. It specifies rules for defining information elements and presents a set of information elements, in particular digital and analog process variables, that are frequently used in telecontrol applications.