BS EN 60870-5-103:1998

Scope and object
2 Normative references
3 Definitions
4 General rules
    4.1 Protocol structure
    4.2 Physical layer
    4.3 Link layer
    4.4 Application layer
    4.5 User process
    4.6 Compatibility with companion standards of the
          IEC 60870-5 series
5 Physical layer
    5.1 Fibre optic transmission
    5.2 EIA RS-485 interface
6 Link layer
    6.1 Selections from IEC 60870-5-1 (transmission frame
          formats)
    6.2 Selections from IEC 60870-5-2 (link transmission
          procedures)
    6.3 Additional specifications to IEC 60870-5-2
7 Application layer
    7.1 Selections from IEC 60870-5-3 (general structure
          of application data)
    7.2 Selections from IEC 60870-5-4 (definition and
          coding of application information elements)
    7.3 Definition and presentation of ASDUs
    7.4 Application functions
8 Interoperability
    8.1 Physical layer
    8.2 Link layer
    8.3 Application layer
Annex A (informative) Generic functions - examples of
constructing a directory
Annex B (informative) Generic functions - Examples of ASDUs
Annex ZA (normative) Normative references to international
publications with their corresponding European publications

Applicable to protection equipment having coded bit serial data transmission for exchanging information with control systems. Specifies a companion standard enabling interoperability between protection equipment and devices of a control system in a substation. The specified companion standard uses standards of the IEC 60870-5 series. Submits specifications for informative interface of protection equipment, but is not necessarily applicable to equipment combining protection and control functions in the same device sharing a single communication port. Covers two methods of information exchange, one based on explicitly specified application service data units, and the second using generic services for transmission of almost all possible information.

This section of IEC 60870-5 applies to protection equipment with coded bit serial data transmission for exchanging information with control systems. It defines a companion standard that enables interoperability between protection equipment and devices of a control system in a substation. The defined companion standard utilizes standards of the IEC 60870-5 series.

This section of IEC 60870-5 presents specifications for the informative interface of protection equipment.

This standard does not necessarily apply to equipment that combines protection and control functions in the same device sharing a single communication port.

This section of IEC 60870-5 describes two methods of information exchange: the first is based on explicitly specified APPLICATION SERVICE DATA UNITS (ASDUs) and application procedures for transmission of “standardized” messages, and the second uses generic services for transmission of nearly all possible information. The “standardized” messages do not cover all possible protection functions, and furthermore a protection device may support only a subset of the messages specified in this standard. For interoperability purposes, in specific applications, this subset has to be specified in clause 8.

The use of predefined messages and application procedures is mandatory, if applicable. In other cases generic services shall be used. The “private ranges” defined in this standard are maintained for compatibility reasons; however, their use is not recommended for future applications.