SN EN 60870-5-4 : 1993

Cooperating organizations
National foreword
Foreword
Introduction
1. Scope and object
2. Normative references
3. Definitions
4. Declaration rules for information elements
4.1 Data types
4.2 Data size
4.3 Bit position
4.4 Values and codes
4.5 Assignment of function symbols and functions
4.6 Identifiers of data field sequences
4.7 Variable field size
4.8 Repetitive data fields
4.9 Logical combinations of data fields
4.10 Packing and order of transport of data field
5. Standard information elements
5.1 Type 1: UNSIGNED INTEGER (UI)
5.2 Type 2: INTEGER (I)
5.3 Type 3: UNSIGNED FIXED POINT NUMBER (UF)
5.4 Type 4: FIXED POINT NUMBER (F)
5.5 Type 5: REAL (R)
5.6 Type 6: BITSTRING (BS)
5.7 Type 7: OCTETSTRING (OS)
6. Set of information elements
6.1 Type 1: UNSIGNED INTEGER (UI)
6.2 Type 2: INTEGER (I)
6.3 Type 3: UNSIGNED FIXED POINT NUMBER (UF)
6.4 Type 4: FIXED POINT NUMBER (F)
6.5 Type 5: REAL (R)
6.6 Type 6: BITSTRING (BS)
6.7 Type 7: OCTETSTRING (OS)
6.8 COMPOUND INFORMATION ELEMENTS (CP)
Annex ZA (normative) Other international publications
quoted in this standard with the references of the
relevant European publications
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Defines standard declaration rules for application data in tele-control systems. Applies to telecontrol equipment and systems with coded bit serial data in tele-control systems. Coverage includes definitions, data types, data size, bit position, variable field size, and repetitive data fields.