IEC60870533

IEC 60870-5-33 is a part of the IEC 60870 series of standards that defines the application layer for telecontrol, teleprotection, and associated telecommunications for electrical power systems. Specifically, IEC 60870-5-33 deals with the definition of the application service data units (ASDU) used in the IEC 60870-5 protocol. The ASDU is the fundamental structure for exchanging information between a master station and a remote slave station in a telecontrol system.

This standard specifies the format and content of ASDUs, including information objects and their associated type identification. It outlines the various data types that can be transmitted, such as status indications, measurements, commands, and setpoints. Each ASDU has a header that contains information about the type of transmitted data and its origin or destination, followed by the actual data elements. Understanding IEC 60870-5-33 is crucial for the interoperability of telecontrol equipment from different manufacturers. It ensures that devices can correctly interpret and process the data exchanged over the communication network, which is vital for the reliable operation and monitoring of electrical grids.