IEC 60870-5-101

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IEC 60870-5-101 (IEC101) is an international standard prepared by TC57 for power system monitoring, control & associated communications. This is completely compatible with IEC 60870-5-1 to IEC 60870-5-5 standards and uses standard asynchronous serial tele-control channel interface between DTE and DCE. The standard is suitable for multiple configurations like point-to-point, star, mutidropped etc.

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[edit] Features

  • Supports unbalanced (master initiated message) & balanced (master/slave initiated message) modes of data transfer.
  • Link address and ASDU addresses are provided for classifying the end station and different sectors under the same.
  • Data is classified into different information objects and each information object is provided with a specific address.
  • Facility to classify the data into high priority (class-1) and low priority (class-2) and transfer the same using separate mechanisms.
  • Possibility of classifying the data into different groups (1-16) to get the data according to the group by issuing specific group interrogation commands from the master & obtaining data under all the groups by issuing a general interrogation.
  • Cyclic & Spontaneous data updating schemes are provided.
  • Facility for time synchronization
  • Schemes for transfer of files

[edit] Types Supported

  • Single indication without / with 24 / with 56 bit timestamps.
  • Double indication without / with 24 / with 56 bit timestamps.
  • Step position information without / with 24 / with 56 bit timestamps.
  • Measured value – normalized, scaled, short floating point without / with timestamps.
  • Bitstring of 32 bit without / with timestamps.
  • Integrated totals (counters) without / with timestamps.
  • Packed events (start & tripping ) of protection equipments
  • Single commands
  • Double commands
  • Regulating step command
  • Set point commands of various data formats
  • Bitstring commands
  • Interrogation commands
  • Clock synchronization & delay acquisition commands
  • Test & reset commands

[edit] See also

[edit] External links

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