EN 13757-2:2018+A1:2023

Communication systems for meters - Part 2: Wired M-Bus communication

This draft European standard is applicable to the physical and link layer parameters of baseband communication over twisted pair (M Bus) for meter communication systems. It is especially applicable to thermal energy meters, heat cost allocators, water meters and gas meters.
NOTE    It is usable also for other meters (like electricity meters) and for sensors and actuators. For generic descriptions concerning communication systems for meters and remote reading of meters see EN 13757-1.

Kommunikationssysteme für Zähler - Teil 2: Drahtgebundene M-Bus-Kommunikation

Dieses Dokument ist anwendbar für die Parameter der Bitübertragungsschicht und der Sicherungsschicht der Basisbandkommunikation über Zweidrahtleitungen (M-Bus) für Zählerkommunikationssysteme. Es ist insbesondere für thermische Energiemessgeräte, Heizkostenverteiler, Wasserzähler und Gaszähler anwendbar.
ANMERKUNG   Es ist auch auf andere Zähler (wie Stromzähler) und für Sensoren und Stellglieder anwendbar. Für allgemeine Beschreibungen hinsichtlich Kommunikationssystemen für Zähler und der Fernablesung von Zählern siehe EN 13757 1.

Systèmes de communication pour compteurs - Partie 2 : Communication M-Bus filaire

Le présent document est applicable aux paramètres de la couche physique et de liaison de la communication en bande de base sur paire torsadée (M-Bus) pour les systèmes de communication des compteurs. Il s'applique tout particulièrement aux compteurs d'énergie thermique, aux répartiteurs de frais de chauffage, aux compteurs d'eau et aux compteurs de gaz.
NOTE Il est également applicable à d'autres compteurs (tels que les compteurs électriques) ainsi qu'à d'autres capteurs et organes de commande. Pour les descriptions génériques concernant les systèmes de communication et de télérelevé de compteurs, voir l'EN 13757–1.

Komunikacijski sistemi za števce - 2. del: Žične komunikacije po M-vodilu (vključno z dopolnilom A1)

Ta osnutek evropskega standarda se uporablja za parametre fizične in povezovalne plasti komunikacije v osnovnem pasu prek sukane parice (M-vodilo) za komunikacijske sisteme za merilnike. Posebej se uporablja za merilnike toplotne energije, delilnike stroškov, merilnike vode in merilnike plina.
OPOMBA: Lahko se uporablja tudi za druge merilnike (npr. merilnike električne energije) ter za tipala in pogone. Za generične opise v zvezi s komunikacijskimi sistemi za merilnike in oddaljeno odbiranje merilnikov glej standard EN 13757-1.

General Information

• Status: Published
• Publication Date: 19-Dec-2023
• ICS: 33.200 - Telecontrol. Telemetering
• ICS: 35.100.10 - Physical layer
• ICS: 35.240.99 - IT applications in other fields
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: CEN/TC 294 - Communication systems for meters and remote reading of meters
• Drafting Committee: CEN/TC 294/WG 4 - Data exchange for meters on bus-systems and interface
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Dec-2023
• Due Date: 18-Oct-2023
• Completion Date: 20-Dec-2023
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Ref Project: SIST EN 13757-2:2018+A1:2024 - Communication systems for meters - Part 2: Wired M-Bus communication

Relations

• Merged From: EN 13757-2:2018/FprA1 - Communication systems for meters - Part 2: Wired M-Bus communication
• Effective Date: 11-Oct-2023
• Merged From: EN 13757-2:2018 - Communication systems for meters - Part 2: Wired M-Bus communication
• Effective Date: 11-Oct-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2024
Komunikacijski sistemi za števce - 2. del: Žične komunikacije po M-vodilu
(vključno z dopolnilom A1)
Communication systems for meters - Part 2: Wired M-Bus communication
Kommunikationssysteme für Zähler - Teil 2: Drahtgebundene M-Bus-Kommunikation
Systèmes de communication pour compteurs - Partie 2 : Communication M-Bus filaire
Ta slovenski standard je istoveten z: EN 13757-2:2018+A1:2023
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
35.100.10 Fizični sloj Physical layer
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13757-2:2018+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 33.200; 35.100.10; 35.240.99; 91.140.50 Supersedes EN 13757-2:2018
English Version
Communication systems for meters - Part 2: Wired M-Bus
communication
Systèmes de communication pour compteurs - Partie 2 Kommunikationssysteme für Zähler - Teil 2:
: Communication M-Bus filaire Drahtgebundene M-Bus-Kommunikation
This European Standard was approved by CEN on 8 February 2018 and includes Amendment approved by CEN on 22 October
2023.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13757-2:2018+A1:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions !and abbreviations" . 8
3.1 !Terms and definitions" . 8
3.2 !Abbreviations" . 9
4 Physical layer specifications . 9
4.1 General . 9
Figure 1 — Representation of bits on the M-Bus . 10
4.2 Electrical requirements slave . 10
4.2.1 Master to slave bus voltages . 10
4.2.2 Slave bus current and multiple unit loads . 11
4.2.3 Dynamic requirements . 12
4.3 Electrical requirements master . 12
4.3.1 Parameters . 12
4.3.2 Function types . 13
4.3.3 Requirements . 13
4.4 Electrical requirements mini-master . 15
4.4.1 Definition of a mini-master . 15
4.4.2 Requirements . 15
4.5 Repeaters . 15
4.5.1 General requirements . 15
4.5.2 Additional requirements . 16
4.6 Burst and surge requirements . 16
4.6.1 General . 16
4.6.2 Requirements for devices intended for domestic use . 16
4.6.3 Requirements for devices intended for industrial use . 16
5 Link Layer (master and slave) . 16
5.1 General . 16
5.2 Baud rate . 16
5.2.1 Required baud rate . 16
5.2.2 Recommended additional baud rates . 16
5.2.3 Special baud rates . 17
5.2.4 Baud rate after reset . 17
5.2.5 Baud rate set . 17
5.2.6 Auto speed mode . 17
5.2.7 Transmit baud rate accuracy . 17
5.3 Bit position . 17
5.3.1 Synchronous transmit bit distortion. 17
5.3.2 Gross transmit bit distortion and minimum signal element . 17
5.3.3 Character interval requirement . 18
5.3.4 Practical receive margin and character interval requirement . 18
5.3.5 Minimum signal element . 18
5.4 Byte format . 18
5.5 Block format . 18
5.5.1 Transmission interbyte gaps . 18
5.5.2 Reception interbyte gaps . 18
5.5.3 Idle time between datagrams . 18
5.6 Datagram abort on collision . 18
5.7 Datagram description . 19
5.7.1 General . 19
5.7.2 Data integrity . 19
5.7.3 !Communication types" . 19
5.7.4 Datagram coding . 20
5.7.5 Addressing . 20
5.7.6 Link layer time schedule . 20
5.7.7 Datagram sequencing. 20
6 Tables and figures . 22
Table 1 — Signal quality characteristics for slaves and masters . 22
Figure 2 — Start stop distorsion (example for bit 4), minimum signal element (example for
bit 7) (Transmit) . 23
Figure 3 — Character interval requirement (Transmit) . 23
Figure 4 — Practical receive margin (example for two falling slopes) . 24
Figure 5 — Character interval requirement (Receive) . 24
Figure 6 — Minimum duration start element (Receive) . 25
Figure 7 — Reception of datagram packets . 25
Figure 8 — Quiescent time after reception. 26
Annex A (informative)  Schematic implementation of slave . 27
Figure A.1 — Slave transceiver . 27
Annex B (informative) !Examples of protection techniques for M-Bus meters against
surge/lightning" . 28
Annex C (informative)  Slave powering options . 33
Annex D (informative)  Slave collision detect . 34
Annex E (informative)  Wire installation . 35
E.1 General . 35
E.2 Type A: small in house installation .
...