AS 60870.5.4-1998 (2015) PDF
Name in English:
St AS 60870.5.4-1998 (2015)
Name in Russian:
Ст AS 60870.5.4-1998 (2015)
Original standard AS 60870.5.4-1998 (2015) in PDF full version. Additional info + preview on request
Full title and description
St AS 60870.5.4-1998 (2015) — Telecontrol equipment and systems — Transmission protocols — Definition and coding of application information elements. This Australian adoption reproduces IEC 60870-5-4:1993 and defines rules and coding for application-layer information elements used in telecontrol/SCADA communications. The Australian edition was originally published in 1998 and was formally reconfirmed on July 22, 2015.
Abstract
This standard specifies the declaration rules, definitions and coding formats for application information elements (digital and analogue process variables, status indications, quality descriptors, timestamps and related data types) used in telecontrol and supervisory control systems. It is intended to ensure consistent representation of application data to support interoperability between telecontrol equipment and systems and is identical in technical content to IEC 60870-5-4:1993.
General information
- Status: Current (reconfirmed on July 22, 2015).
- Publication date: April 5, 1998.
- Publisher: Standards Australia.
- ICS / categories: 33.200 — Telecontrol. Telemetering.
- Edition / version: AS 60870.5.4-1998 (identical to IEC 60870-5-4:1993); reconfirmation notice dated July 22, 2015.
- Number of pages: 20.
Scope
The standard defines the rules for naming, declaring and coding application-layer information elements used in telecontrol systems. It covers the structure, data types and coding of common process variables and status information (including digital inputs/outputs, analogue measurements, quality descriptors and time tags) so that application data units can be unambiguously interpreted between different manufacturers' equipment and across transmission protocols defined in the IEC/AS 60870-5 series.
Key topics and requirements
- Definition and formal declaration rules for application information elements (naming, identifiers, semantics).
- Coding formats for digital and analogue data types, quality flags and status descriptors.
- Representation and encoding of time tags and timestamp formats for event and measurement data.
- Rules for grouping application elements into data units for transmission under the IEC/AS 60870-5 protocol family.
- Interoperability guidance to ensure consistent interpretation across devices implementing different parts of the 60870-5 series.
- Compatibility: identical technical content to IEC 60870-5-4:1993; intended to be used with other parts of AS/IEC 60870-5.
Typical use and users
This standard is used by utility and industrial automation engineers, SCADA system architects, protocol implementers, device manufacturers, system integrators and test laboratories. Typical applications include power-system telecontrol, distribution automation, remote telemetry, and any SCADA deployment requiring standardized application-layer data definitions and interoperability between field devices and control centres.
Related standards
AS 60870.5.4-1998 is part of the AS/IEC 60870 series. Closely related standards include AS 60870.5.1 (Transmission frame formats), AS 60870.5.2 (Link transmission procedures), AS 60870.5.3 (General structure of application data), AS 60870.5.5 (Basic application functions), and the AS 60870.1.x general considerations and glossary parts. It is identical to IEC 60870-5-4:1993 and is intended for use with other parts of the IEC 60870-5 family.
Keywords
telecontrol, SCADA, IEC 60870-5, application information elements, coding, data types, time tag, process variables, interoperability, Standards Australia, AS 60870.5.4
FAQ
Q: What is this standard?
A: It is the Australian adoption AS 60870.5.4-1998, titled "Telecontrol equipment and systems — Transmission protocols — Definition and coding of application information elements," reproducing IEC 60870-5-4:1993.
Q: What does it cover?
A: It covers the declaration rules, definitions and binary/text coding of application-layer information elements used in telecontrol/SCADA communications — for example digital/analogue measurements, status indicators, quality descriptors and timestamps — to ensure consistent interpretation across devices and systems.
Q: Who typically uses it?
A: Utility engineers, SCADA and RTU manufacturers, protocol implementers, system integrators and test laboratories use this standard when designing, implementing or testing telecontrol systems and devices.
Q: Is it current or superseded?
A: The Australian adoption was published on April 5, 1998 and was formally reconfirmed on July 22, 2015. As reconfirmed, it remained current at the date of that notice. Users should verify with Standards Australia or national catalogues for any amendments or newer editions published after July 22, 2015.
Q: Is it part of a series?
A: Yes — it is part of the IEC/AS 60870-5 series (Part 5: Transmission protocols). It is intended to be used together with the other parts of the series (e.g., AS 60870.5.1 through AS 60870.5.5) and the general considerations parts (AS 60870.1.x).
Q: What are the key keywords?
A: Telecontrol, SCADA, application information elements, coding, process variables, time tag, IEC 60870-5, interoperability, Standards Australia.