EN 60870-5-2:1993
(Main)Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link transmission procedures
Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link transmission procedures
Applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes.
Fernwirkeinrichtungen und -systeme - Teil 5: Übertragungsprotokolle - Hauptabschnitt 2: Übertragungsprozeduren der Verbindungsschicht
Matériels et systèmes de téléconduite - Partie 5: Protocoles de transmission - Section 2: Procédures de transmission de liaison de données
S'applique aux matériels et systèmes de téléconduite à transmission en série de données binaires, destinés à la surveillance et à la conduite de processus géographiquement dispersés. Une version monolingue anglaise de cette publication est aussi disponible.
Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link transmission procedures (IEC 870-5-2:1992)
General Information
- Status
- Published
- Publication Date
- 12-Sep-1993
- Withdrawal Date
- 31-Jul-1994
- Technical Committee
- CLC/TC 57 - Power systems management and associated information exchange
- Drafting Committee
- IEC/TC 57 - IEC_TC_57
- Parallel Committee
- IEC/TC 57 - IEC_TC_57
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 05-Jan-2026
- Completion Date
- 10-Feb-2026
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Referred By
EN 13757-4:2025 - Communication systems for meters - Part 4: Wireless M-Bus communication - Effective Date
- 09-Feb-2026
- Referred By
EN 13757-4:2019 - Communication systems for meters - Part 4: Wireless M-Bus communication - Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
Overview
EN 60870-5-2:1993 (also published as IEC 870-5-2:1992) specifies link transmission procedures for telecontrol equipment and systems that use coded bit serial data transmission. The standard applies to systems for monitoring and controlling geographically widespread processes - for example telecontrol, telemetry and remote supervisory systems. It defines the link-layer behavior needed to reliably transfer data between telecontrol stations and remote devices.
Key topics
The standard focuses on link-layer transmission procedures and typically covers these technical areas:
- Link establishment and release procedures for serial bit-oriented links
- Frame handling and sequencing to ensure ordered delivery of link frames
- Supervision and acknowledgement mechanisms to confirm successful reception
- Error detection and handling methods at the link level to detect corrupted frames
- Flow control and retransmission strategies to manage link capacity and recover from errors
- Timing and timeout requirements for supervision, retries and guard intervals
- Support for balanced and unbalanced link configurations and master/slave arrangements
Note: EN 60870-5-2 addresses the link layer within the EN/IEC 60870-5 transmission protocol family; it provides the procedural rules rather than application-specific message content.
Applications
EN 60870-5-2 is used where robust, deterministic serial-bit communications are required in telecontrol contexts:
- Electrical power SCADA for substation telecontrol, remote switching and protection signaling
- Telemetering and remote monitoring of infrastructure (water, gas, transportation) across long distances
- Industrial remote control systems for geographically dispersed assets
- Legacy serial communication systems where coded bit-serial framing is used
Who uses this standard
- SCADA and telecontrol system designers implementing reliable link-layer communications
- Device and modem manufacturers building remote terminal units (RTUs) and telecontrol equipment
- System integrators and utilities verifying interoperability and conformance in networked control systems
- Test laboratories and certification bodies performing compliance and interoperability testing
Related standards
- EN/IEC 60870-5 series (transmission protocols and application profiles) - EN 60870-5-2 is the link-layer section within this family.
- IEC 870-5-2 (original publication reference)
This concise reference helps engineers and procurement teams understand when to apply EN 60870-5-2 for reliable serial-bit telecontrol links and how it fits into SCADA and remote-control protocol stacks.
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Frequently Asked Questions
EN 60870-5-2:1993 is a standard published by CLC. Its full title is "Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link transmission procedures". This standard covers: Applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes.
Applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes.
EN 60870-5-2:1993 is classified under the following ICS (International Classification for Standards) categories: 33.200 - Telecontrol. Telemetering. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60870-5-2:1993 has the following relationships with other standards: It is inter standard links to EN 589:1998, EN 13757-4:2005, EN 13757-5:2008, EN 13757-2:2018, EN 13757-1:2021, EN 13757-1:2014, EN 13757-5:2015, EN 13757-4:2025, EN 13757-4:2019, EN 13757-4:2013, EN 13757-1:2002, EN 13757-2:2004, EN 60870-5-6:2009, EN 62361-2:2013, EN 61850-5:2013/A1:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60870-5-2:1993 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-avgust-1997
Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2:
Link transmission procedures (IEC 870-5-2:1992)
Telecontrol equipment and systems -- Part 5: Transmission protocols - Section 2: Link
transmission procedures
Fernwirkeinrichtungen und -systeme -- Teil 5: Übertragungsprotokolle - Hauptabschnitt 2:
Übertragungsprozeduren der Verbindungsschicht
Matériels et systèmes de téléconduite -- Partie 5: Protocoles de transmission - Section 2:
Procédures de transmission de liaison de données
Ta slovenski standard je istoveten z: EN 60870-5-2:1993
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN
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