Core Specification Documents

• IEC 870-5 Standard Documents

  • IEC 870-5-1 Transmission Frame Formats
  • IEC 870-5-2 Link Transmission Procedures
  • IEC 870-5-3 General Structure of Application Data
  • IEC 870-5-4 Definition and Coding of Application Information Elements
  • IEC 870-5-5 Basic Application Functions

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The IEC standards may be purchased directly from the IEC in Switzerland, or from the national standards bodies in most countries. The documents can be downloaded from the IEC web site.