IEC 62888-4-2018 PDF

Full title and description

Railway applications - Energy measurement on board trains - Part 4: Communication. This international standard specifies communication services and digital interfaces used for energy measurement systems (EMS) on board trains, covering intra-EMS, EMS-to-other on‑board subsystems and on‑board to ground data exchange.

Abstract

IEC 62888-4:2018 defines the communication requirements, protocol stacks, interfaces and conformance tests needed to support the exchange of measured energy data between measurement functions, the Data Handling System (DHS) and ground data collection services. It addresses on‑board communication subsystems, on‑board to ground links, access security and test procedures (PICS/PIXIT, type tests and design review).

General information

• Status: Published (International Standard).
• Publication date: 25 January 2018.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 45.060.01 (Railway applications).
• Edition / version: Edition 1.0 (2018).
• Number of pages: 101.

Scope

Specifies requirements and guidance for data communication used by energy measurement functions on board trains, including (a) communication between functions within the EMS, (b) interfaces between EMS functions and other on‑board subsystems, and (c) on‑board to ground communication services to support transfer of Compiled Energy Measured Data to on‑ground Data Collection Services (DCS). The part also defines conformance testing for the communications services.

Key topics and requirements

• Definition of on‑board communication subsystem and recommended protocol stack models (preferred solution stacks for on‑board and on‑board-to-ground communication).
• Interfaces and payload formats (examples include VEI — VMF/CMF to ECF, EMDI — EMF to DHS, maintenance/testing interfaces and Consist Network interfaces).
• Requirements for on‑board to ground communication services to enable reliable transfer of compiled energy data.
• Security and access control considerations for communication and data exchange.
• Conformance and test procedures: PICS/PIXIT, design review, type tests, test benches and test methodology.
• Time synchronisation, record formats and metrological requirements to support accurate energy calculation and reporting.

Typical use and users

Used by rolling stock manufacturers, EMS and DHS vendors, system integrators, railway operators, test laboratories and conformity assessment bodies to design, implement and verify communication functions for on‑board energy measurement systems and their links to ground data collection services. Procurement and regulatory teams also refer to this part when specifying interoperable energy measurement and reporting capabilities.

Related standards

Part of the IEC 62888 series (Railway applications – Energy measurement on board trains). Related parts include: Part 1 (General), Part 2 (Energy measurement), Part 3 (Data handling), Part 5 (Conformance test) and Part 6 (Requirements for purposes other than billing). IEC 62888-4 is based on EN 50463 and aligns with other railway communication and measurement standards referenced within the document.

Keywords

Energy measurement, railway, on‑board communication, protocol stack, EMS, DHS, on‑board to ground, PICS, PIXIT, conformance test, VEI, EMDI, metrology.

FAQ

Q: What is this standard?

A: IEC 62888-4:2018 is Part 4 of the IEC 62888 series specifying communication services for energy measurement systems on board trains, including on‑board and on‑board-to-ground data exchange requirements.

Q: What does it cover?

A: It covers communication protocol stacks, interfaces between EMS functions and other subsystems, payload/record formats, access security and conformance/testing requirements to ensure reliable transfer of measured energy data.

Q: Who typically uses it?

A: Rolling stock manufacturers, EMS/DHS suppliers, railway operators, system integrators, test laboratories and certification bodies use this standard when developing, integrating and validating energy measurement communication functionality.

Q: Is it current or superseded?

A: IEC 62888-4:2018 is the published edition (Edition 1.0, published 25 Jan 2018). The IEC webstore indicates a stability date (the date until which the content is intended to remain unchanged) associated with the record; consult the IEC catalogue for any amendments or revisions beyond the stability date.

Q: Is it part of a series?

A: Yes — it is Part 4 of the IEC 62888 series (Parts 1–6) addressing various aspects of on‑board energy measurement on trains (general, measurement, data handling, communication, conformance test and requirements for non‑billing uses).

Q: What are the key keywords?

A: Key keywords include energy measurement, railway, EMS, DHS, communication, protocol stack, on‑board to ground, VEI, EMDI, PICS, PIXIT and conformance testing.