IEC 60870

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In electrical engineering and power system automation, the International Electrotechnical Commission 60870 standards define systems used for telecontrol (supervisory control and data acquisition). Such systems are used for controlling electric power transmission grids and other geographically widespread control systems. By use of standardized protocols, equipment from many different suppliers can be made to interoperate. IEC standard 60870 has six parts, defining general information related to the standard, operating conditions, electrical interfaces, performance requirements, and data transmission protocols. The 60870 standards are developed by IEC Technical Committee 57 (Working Group 03).

IEC 60870-5[edit]

Main article: IEC 60870-5

IEC 60870 part 5 [1] provides a communication profile for sending basic telecontrol messages between two systems, which uses permanent directly connected data circuits between the systems. The IEC TC 57 WG3 have developed a protocol standard for telecontrol, teleprotection, and associated telecommunications for electric power systems. The result of this work is IEC 60870-5. Five documents specify the base IEC 60870-5:

  • IEC 60870-5-1 Transmission Frame Formats
  • IEC 60870-5-2 Data Link Transmission Services
  • IEC 60870-5-3 General Structure of Application Data
  • IEC 60870-5-4 Definition and Coding of Information Elements
  • IEC 60870-5-5 Basic Application Functions

The IEC TC 57 has also generated companion standards:

  • IEC 60870-5-101 Transmission Protocols, companion standards especially for basic telecontrol tasks
  • IEC 60870-5-102 Companion standard for the transmission of integrated totals in electric power systems (this standard is not widely used)
  • IEC 60870-5-103 Transmission Protocols, Companion standard for the informative interface of protection equipment
  • IEC 60870-5-104 Transmission Protocols, Network access for IEC 60870-5-101 using standard transport profiles

IEC 60870-5-101/102/103/104 are companion standards generated for basic telecontrol tasks, transmission of integrated totals, data exchange from protection equipment & network access of IEC101 respectively.

IEC 60870-6[edit]

Main article: IEC 60870-6

IEC TC 57 WG3 also generated standards for telecontrol protocols compatible with ISO standards and ITU-T recommendations. These standards include:

  • IEC 60870-6-1 Application context and organization of standards
  • IEC 60870-6-2 Use of basic standards (OSI layers 1–4)
  • IEC 60870-6-501 TASE.1 Service definitions
  • IEC 60870-6-502 TASE.1 Protocol definitions
  • IEC 60870-6-503 TASE.2 Services and protocol
  • IEC 60870-6-504 TASE.1 User conventions
  • IEC 60870-6-601 Functional profile for providing the connection-oriente d transport service in an end system connected via permanent acc ess to a packet switched data network
  • IEC 60870-6-602 TASE transport profiles
  • IEC 60870-6-701 Functional profile for providing the TASE.1 application service in end systems
  • IEC 60870-6-702 Functional profile for providing the TASE.2 application service in end systems
  • IEC 60870-6-802 TASE.2 Object models


  1. ^ Gordon R. Clarke et al, Practical modern SCADA protocols: DNP3, 60870.5 and related systems,Newnes, 2004 ISBN 0-7506-5799-5

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