Overview - EN 60870-6-702:2014 (TASE.2 functional profile)
EN 60870-6-702:2014 (IEC 60870-6-702:2014) is a functional profile that specifies how to provide the TASE.2 (Telecontrol Application Service Element 2) application service between two control‑centre end systems. It defines the protocol stack applicability and conformance requirements for telecontrol communications used in power systems management and associated information exchange. The profile is intended to be used together with transport‑profiles appropriate to the network interconnecting control centre end systems.
The 2014 edition supersedes the 1998 edition. Key editorial changes include moving some objects from normative to informative status and removing rarely used TASE.2 conformance blocks to improve application‑level interoperability.
Key topics and technical requirements
- Scope of service: Defines provision of TASE.2 services in end systems - client/server capabilities, association management and object models for telecontrol.
- Profile protocol stacks: Specifies upper‑layer (TASE.2 / MMS / ACSE / Presentation / Session) and lower‑layer transport dependencies.
- Conformance and PICS: Contains conformance requirements, Protocol Implementation Conformance Statements (PICS) and ISPICS requirement lists (Annex A) to support testability and certification.
- MMS / ACSE / Presentation / Session specifics: Lists required MMS PDUs and MMS-related parameter handling, ACSE services, and presentation/session requirements that TASE.2 implementations must support.
- Object models and services: Coverage includes data values, data sets, transfer sets, event enrollment/conditions, program invocation, file and journal management, access control and operator communication (as indicated in the annex tables).
- Interoperability focus: Changes in this edition intentionally remove seldom‑used conformance blocks and shift some normative items to informative to promote consistent multi‑vendor interoperability.
- Security references: The standard references related security profiles (for example IEC/TS 62351‑4) and underlying transport considerations.
Applications and who uses it
- Intended users: SCADA/telecontrol system vendors, power system control centre integrators, utilities (transmission and distribution control centres), test laboratories, and certificating bodies.
- Practical applications: Inter‑control‑centre data exchange, inter‑utility telecontrol links, secure data and event synchronization between control centres, operator and programmatic access to remote resources using standardized TASE.2 services.
- Why adopt it: Ensures predictable behavior of TASE.2 services across vendors, reduces integration costs, and supports standardized testing and conformance.
Related standards
- IEC/EN 60870‑6‑503 (TASE.2 services and protocol)
- IEC/TS 62351‑4 (data and communications security for MMS profiles)
- ISO/IEC MMS and OSI protocol specifications referenced (MMS, ACSE, Presentation, Session) and RFC 2126 (ISO transport on TCP / ITOT)
Keywords: EN 60870-6-702:2014, IEC 60870‑6‑702, TASE.2, telecontrol protocols, telecontrol equipment, control centre end systems, MMS, SCADA interoperability, telemetry standards.