The IEC 60870-5 family has been successively developed by the [ IEC ] (International Electrotechnical Commission) in the last years. National standard commitees, like the German [ DIN ]
(Deutsches Institut für Normung e.V.), have adopted the standards as national standards.
The IEC 60870-5 family defines based on the five basic standards IEC 60870-5-1 (frame formats), -2 (link transmission procedures) -3 (structure application data), -4 (information elements) and -5 (basic application functions)
the companion standards IEC 60870-5-101, -102, -103 and -104.