EN 13757-4:2019

SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN 13757-4:2013
Komunikacijski sistemi za števce - 4. del: Brezžično komuniciranje po M-vodilu
Communication systems for meters - Part 4: Wireless M-Bus communication
Kommunikationssysteme für Zähler und deren Fernablesung - Teil 4: Zählerauslesung
über Funk (Fernablesung von Zählern im SRD-Band)
Systèmes de communication pour compteurs - Partie 4 : Communication sans fil M-Bus
Ta slovenski standard je istoveten z: EN 13757-4:2019
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
35.100.10 Fizični sloj Physical layer
35.100.20 Podatkovni povezovalni sloj Data link layer
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13757-4
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 33.200; 35.100.10; 35.100.20 Supersedes EN 13757-4:2013
English Version
Communication systems for meters - Part 4: Wireless M-
Bus communication
Systèmes de communication pour compteurs - Partie 4 Kommunikationssysteme für Zähler - Teil 4: Drahtlose
: Communication sans fil M-Bus M-Bus-Kommunikation
This European Standard was approved by CEN on 25 February 2019.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13757-4:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 6
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Abbreviations and symbols . 11
4.1 Abbreviation . 11
4.2 Symbols . 12
5 General . 12
5.1 Modes of operation . 12
5.2 Meter communications types. 13
5.3 Performance Classes . 15
6 Mode S . 16
6.1 Channel properties . 16
6.2 Transmitter . 17
6.3 Receiver . 18
6.4 Data encoding and preamble . 19
6.4.1 Data encoding . 19
6.4.2 Order of transmission of the encoded data . 19
6.4.3 Preamble and synchronization pattern . 19
7 Mode T . 19
7.1 Channel properties . 19
7.2 Transmitter . 19
7.3 Receiver (T2 only) . 22
7.4 Data encoding and preamble . 22
7.4.1 General . 22
7.4.2 Meter transmit, “3 out of 6” data encoding . 22
7.4.3 Other Device transmit, Manchester encoding . 24
8 Mode R2 . 24
8.1 Channel properties . 24
8.2 Transmitter . 24
8.3 Receiver . 26
8.4 Data encoding and preamble . 26
8.4.1 Data encoding . 26
8.4.2 Order of transmission of the encoded data . 26
8.4.3 Preamble and synchronization pattern . 26
9 Mode C . 27
9.1 Channel properties . 27
9.2 Transmitter . 27
9.3 Receiver . 29
9.4 Data encoding and preamble . 29
9.4.1 Encoding . 29
9.4.2 Preamble and synchronization pattern . 29
10 Mode N . 30
10.1 Channel properties . 30
10.2 Physical link parameters . 31
10.3 Receiver sensitivity . 34
10.4 Data encoding and preamble . 34
10.4.1 Encoding . 34
10.4.2 Preamble and synchronization pattern . 34
11 Mode F . 35
11.1 Channel properties . 35
11.2 Physical link parameters . 35
11.3 Receiver sensitivity . 37
11.4 Data encoding and preamble . 37
11.4.1 Data Encoding . 37
11.4.2 Preamble and synchronization pattern . 37
12 Data Link Layer . 37
12.1 General . 37
12.2 Order of multi byte fields . 38
12.3 Frame format A . 38
12.4 Frame format B . 38
12.5 Field definitions . 39
12.5.1 General . 39
12.5.2 Multi byte fields . 39
12.5.3 Length field (L-Field) . 39
12.5.4 Control field (C-Field). 39
12.5.5 Manufacturer ID (M-field) . 41
12.5.6 Address (A-field) . 42
12.5.7 Cyclic redundancy check (CRC-field) . 42
12.5.8 Control information field (CI-field) . 42
12.6 Timing . 42
12.6.1 Timing for installation messages . 42
12.6.2 Synchronous transmissions of meter messages . 43
12.6.3 Access timing . 45
12.7 Repeated or duplicate messages . 46
12.8 Forward Error Correction (FEC) . 46
12.8.1 Overview . 46
12.8.2 Datagram structure. 46
12.8.3 FEC Algorithm . 47
13 Connection to higher protocol layers . 48
13.1 The Control Information Field (CI-field) . 48
13.2 CI-fields for the Extended Link Layer . 49
13.2.1 General . 49
13.2.2 CI-field = 8C . 50
h
13.2.3 CI-field = 8D . 50
h
13.2.4 CI-field = 8E . 50
h
13.2.5 CI-field = 8F . 51
h
13.2.6 CI-field = 86 . 51
h
13.2.7 Communication Control Field (CC-field) . 52
13.2.8 Access Number Field (ACC-field) . 54
13.2.9 Manufacturer ID 2 (M2-field). 54
13.2.10 Address 2 (A2-field) . 54
13.2.11 Session Number Field (SN-field) . 54
13.2.12 AES-128 Counter Mode Encryption . 55
13.2.13 Run Time Delay field (RTD-field) . 56
13.2.14 Reception Level field (RXL-field) . 56
13.2.15 Payload Checksum Field (PayloadCRC-field) . 58
13.3 CI-fields for the Transport Layer . 58
13.3.1 General . 58
13.3.2 Short Transport Layer . 59
13.3.3 Long Transport Layer . 59
14 Management functions for link control . 59
14.1 General . 59
14.2 Set Radio Parameters . 63
14.2.1 General . 63
14.2.2 Command . 63
14.2.3 Response . 67
14.3 Get Radio Parameters . 69
14.3.1 General . 69
14.3.2 Command . 69
14.3.3 Response . 69
14.4 Set limited radio parameters . 71
14.4.1 General . 71
14.4.2 Command . 71
14.4.3 Response . 72
14.5 Confirm Radio Parameters . 73
14.5.1 General . 73
14.5.2 Command . 73
14.5.3 Response: . 73
14.6 Set manufacturer specific parameters . 74
14.6.1 General . 74
14.6.2 Command . 74
14.6.3 Response . 75
Annex A (informative) Frequency allocation and band usage for the 868 MHz band . 76
Annex B (informative) Frequency allocation for the 169 MHz band . 77
B.1 Frequencies and allowed power levels . 77
B.2 Frequencies and allowed duty cycles . 77
Annex C (informative) Frame examples . 78
C.1 Example of a frame from a meter in mode S . 78
C.1.1 Conditions . 78
C.1.2 Block content . 78
C.1.3 Bit string . 79
C.2 Example of a frame from a meter in mode T1 . 80
C.2.1 Condition . 80
C.2.2 Block Content . 80
C.2.3 Bit string . 81
C.3 Example of a frame from a meter in mode C1 . 81
C.3.1 Conditions . 81
C.3.2 Block content . 82
C.3.3 Bit string . 82
Annex D (informative) Example of predictive reception of synchronous messages . 83
Annex E (informative) Timing diagrams . 84
Annex F (informative) Counter Mode Flow . 99
Bibliography . 100

European foreword
This document (EN 13757-4:2019) has been prepared by Technical Committee CEN/TC 294
“Communication systems for meters”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2019, and conflicting national standards
shall be withdrawn at the latest by November 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13757-4:2013.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
The main changes since EN 13757-4:2013 are as follows:
— Referenced standards have been updated to the most recent versions;
— Mode N, in the 169 MHz band has been extended to cover more frequencies see Clause 10;
— New C-field function code (Send User Data – No reply) added see 12.5.4;
— Extended timing tolerances for synchronous transmission see 12.6.2;
— Optional Forward Error Correction in the Link Layer added see 12.8;
— CI field for selectable Extended Link Layer added see 13.2;
— Management functions for link control added see Clause 14.
The standard is not affected by any of the requirements in Directive 2004/22/EC as it only covers the
basic transmission of information from the meter to an external entity. The standard ensures that data
transmitted cannot be modified without it being detected. Confidentiality, integrity and authenticity are
provided by the capabilities specified in other parts of the EN 13757 series of standards. The standard
does not specify any of the metering capabilities of the meter nor the metrological capabilities of the
meter.
The standard enables encrypted transfer data either directly or as specified in other parts of the
EN 13757 series of standards. The encryption ensures the confidentiality of any personal data.
The standard provides capabilities of interoperability of meters as requested in M/441 which can be
used to improve the customer awareness of actual consumption.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Introduction
This European Standard belongs to the EN 13757 series, which covers communication systems for
meters.
EN 13757-1 contains generic descriptions and a communication protocol.
EN 13757-2 contains a physical and a link layer for twisted pair based Meter-Bus (M-Bus).
EN 13757-3 describes the application layer protocols (often called M-Bus).
EN 13757-5 describes the wireless network used for repeating, relaying and routing for the different
modes of EN 13757-4.
EN 13757-6 describes a twisted pair local bus for short distance (Lo-Bus).
EN 13757-7 describes transport and security services.
These upper M-Bus protocol layers can be used with various physical layers and with link layers and
network layers, which support the transmission of variable length binary transparent messages.
Frequently, the physical and link layers of EN 13757-2 (twisted pair) and EN 13757-4 (wireless) as well
as EN 13757-5 (wireless with routing function) or the alternatives described in EN 13757-1 are used.
The different parts of this standard are complemented by CEN/TR 17167 that provides examples and
supplementary information related to EN 13757-2, EN 13757-3 and EN 13757-7.
These upper M-Bus protocol layers have been optimized for minimum battery consumption of meters,
especially for the case of wireless communication, to ensure long battery lifetimes of the meters.
Secondly, it is optimized for minimum message length to minimize the wireless channel occupancy and
hence the collision rate. Thirdly, it is optimized for minimum requirements towards the meter
processor regarding requirements of RAM size, code length and computational power.
This standard concentrates on the meter communication. The meter communicates with one (or
occasionally several) fixed or mobile communication partners which again might be part of a private or
public network. These further communication systems might use the same or other application layer
protocols, security, privacy, authentication, and management methods.
The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent concerning Forward Error Correction
given in 12.8.
CEN takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has ensured CEN that he/she is willing to negotiate licences either free of
charge or under reasonable and non-discriminatory terms and conditions with applicants throughout
the world. In this respect, the statement of the holder of this patent right is registered with CEN.
Information may be obtained from:
Kamstrup A/S
Rasmus Søby Dupont, IP Manager, Technology
Industrivej 28, Stilling
8660 Skanderborg
Denmark
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those identified above. CEN shall not be held responsible for identifying any or
all such patent rights.
CEN and CENELEC maintain online lists of patents relevant to their standards. Users are encouraged to
consult the lists for the most up to date information concerning patents
(ftp://ftp.cencenelec.eu/EN/IPR/Patents/IPRdeclaration.pdf).
1 Scope
This document specifies the requirements of parameters for the physical and the link layer for systems
using radio to remotely read meters. The primary focus is to use the Short Range Device (SRD)
unlicensed telemetry bands. The standard encompasses systems for walk-by, drive-by and fixed
installations. As a broad definition, this European Standard can be applied to various application layers.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 13757-1, Communication systems for meters - Part 1: Data exchange
EN 13757-2, Communication systems for meters - Part 2: Wired M-Bus communication
EN 13757-3:2018, Communication systems for meters - Part 3: Application protocols
EN 13757-5:2015, Communication systems for meters - Part 5: Wireless M-Bus relaying
EN 13757-7:2018, Communication systems for meters - Part 7: Transport and security services
EN 60870-5-1, Telecontrol equipment and systems - Part 5: Transmission protocols - Section 1:
Transmission frame formats (IEC 60870-5-1)
EN 60870-5-2, Telecontrol equipment and systems - Part 5: Transmission protocols - Section 2: Link
transmission procedures (IEC 60870-5-2)
ETSI EN 300-220-1, V3.1.1:2017-02, Short Range Devices (SRD) operating in the frequency range 25 MHz
to 1 000 MHz — Part 1: Technical characteristics and methods of measurement
ETSI EN 300-220-2, V3.2.1:2018-04, Short Range Devices (SRD) operating in the frequency range 25 MHz
to 1 000 MHz — Part 2: Harmonised Standard covering the essential requirements of article 3.2 of
Directive 2014/53/EU for non specific radio equipment
ETSI EN 300-220−4, V1.1.1:2017, Short Range Devices (SRD) operating in the frequency range 25 MHz to
1 000 MHz — Part 4: Harmonised Standard covering the essential requirements of article 3.2 of
Directive 2014/53/EU; Metering devices operating in designated band 169,400 MHz to 169,475 MHz
Draft ETSI EN 301 489−1, V2.2.0:2017, ElectroMagnetic Compatibility (EMC) standard for radio
equipment and services — Harmonised Standard covering the essential requirements of article 3.1(b) of
the Directive 2014/53/EU and the essential requirements of article 6 of the Directive 2014/30/EU —
Part 1: Common technical requirements
ETSI EN 301-489−3, Electromagnetic compatibility and Radio spectrum Matters (ERM) —
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services — Part 3: Specific
conditions for Short-Range Devices (SRD) operating on frequencies between 9 kHz and 246 GHz
CCSDS 131.0-B-2 (Consultative Committee for Space Data Systems (CCSDS)), August 2011, Recommended
standard for TM Synchronization and Channel Coding, Issue 2
ERC/REC 70-03 relating to the use of short range devices (SRD), issued by the European Conference of
Postal and Telecommunications Administrations (CEPT), Electronics Communications Committee on
2018-10-05
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
BER
bit error rate
3.2
FEC
Forward Error Correction
3.3
frame
unit of transmission at the Data Link Layer
3.4
FSK
frequency shift keying
3.5
GFSK
gaussian frequency shift keying
3.6
individual transmission interval
exact time between two subsequent synchronous or periodical transmissions which changes with each
transmission
3.7
LSB
least significant byte
3.8
LSBit
least significant bit
3.9
message
set of data at the Application Layer
3.10
MSB
most significant byte
3.11
MSBit
most significant bit
3.12
nominal transmission interval
average individual transmission interval between all synchronous or periodical messages (new, old or
no data content) for wireless meters
3.13
NRZ
non-return-to-zero
3.14
other device
end device exchanging information with a meter
Note 1 to entry: A repeater is not an Other Device, as it is not exchanging information but just passing it on. A
communications controller (gateway) is an Other Device. A physical meter may take this role if supporting
additional network functions.
3.15
PER
packet error rate
3.16
PN9
nine bit pseudo-random pattern
Note 1 to entry: The PN9 needs to be designed according to ITU-T Rec. O.150.
4 Abbreviations and symbols
4.1 Abbreviation
CI Control Information Field
Ident no. Identification number (serial number) (part of meter address)
Manuf. Manufacturer acronym (part of meter address)
Ver. Version (part of meter address)
Device Type Device type (part of meter address)
ACC Access number (refer to EN 13757-7)
STS Status (refer to EN 13757-7)
Conf.Field Configuration Field (refer to EN 13757-7)
M-2-O Meter to other device (transmission direction)
O-2-M Other device to meter (transmission direction)
min. minimum value
typ. typical value
max. maximum value
RFU Reserved for Future Use
4.2 Symbols
Hexadecimal notation is designated by a following “ ”.
h
Binary numbers are designated by a following “ ”.
b
Decimal numbers have no suffix.
5 General
5.1 Modes of operation
The “meters” may communicate with “other” system components, for example mobile readout devices,
stationary receivers, data collectors, multi-utility concentrators or system network components. Such
devices are in this document named “Other Device”. For the meter side, it is assumed that the
communication function will work without any operator’s intervention or need for battery replacement
over the full lifetime of the radio part of the meter. Other components such as the mobile readout or
stationary equipment may have a shorter battery lifetime or require an external power supply as
dictated by the technical parameters and use.
Several different modes of operation are defined for the communication with the meter. Many of the
physical and link layer parameters of these different modes are identical, allowing the use of common
hardware and software. However, due to the operational and technical requirements of these modes
some parameters will differ.
The name of a mode is specified by a letter and a number. The letter specifies a mode and the number
specifies whether the modes supports unidirectional (= 1) or bidirectional (= 2) data transfer.
a) “Stationary mode”, mode S is intended for unidirectional or bidirectional communications between
the meter and a stationary or mobile device. A special transmit only sub-mode S1 is optimized for
stationary battery operated devices with a long header and the sub-mode S1-m is specialized for
mobile receivers.
b) “Frequent transmit mode”, mode T. In this mode, the meter transmits a very short frame (typically
3 ms to 8 ms) every few seconds, thus allowing walk-by and/or drive-by readout.
Transmit only sub-mode T1. It is the minimal transmission of a meter ID plus a readout value,
which is sent periodically.
The bidirectional sub-mode T2 transmits frequently a short frame containing at least its ID and
then waits for a very short period after each transmission for the reception of a response. The
reception of a response will open a bidirectional communication channel. Alternatively, the initial
frame contains the readout value as well, and the response is a reverse channel only used for
special services.
c) “Frequent receive mode”, mode R. In this mode only R2 is relevant, as R1 makes no sense. The
meter listens every few seconds for the reception of a wakeup message from a mobile transceiver.
After receiving such a wakeup, the device will prepare for a few seconds of communication dialogue
with the initiating transceiver. In this mode a “multi-channel receive mode” allows the
simultaneous readout of several meters, each one operating on a different frequency channel. This
mode is as well applicable to stationary Other Devices.
d) “Compact Mode” mode C. This mode is similar to mode T but it allows for transmission of more data
within the same energy budget and with the same duty cycle. It supports the sub-modes C1 and C2
for unidirectional and bidirectional devices. It is suitable for walk-by and/or drive-by readout. The
common reception of mode T and mode C frames with a single receiver is possible.
e) “Narrowband VHF”, mode N. Optimized for narrowband operation in the 169 MHz frequency band,
allocated for meter reading and a few other services. The range of sub-modes can be extended
using repeaters. Sub-band A is intended for, but not limited to, long range secondary
communication using multi-hop repeaters.
f) “Frequent receive and transmit mode”, mode F. Used in the 433 MHz frequency band for long range
communications. In the bidirectional sub-modes F2-m, the meter listens every few seconds for the
reception of a wake up message from a stationary or mobile transceiver. After receiving such a
wake up message, the device prepares for a few seconds of communication dialogue with the
initiating transceiver. The bidirectional sub-mode F2 transmits a frame and waits for a short period
for the reception of a response. The response will open for bidirectional communication.
Meters or other communication devices may support one, multiple or all of the described modes.
NOTE Additional modes, supporting repeating and routing of data, are specified in EN 13757-5.
The detailed handling of broadcast and multicast transmissions is not specified in this standard. The
transmission shall be interpreted as multicast if no Extended Link Layer or Transport Layer is used.
5.2 Meter communications types
Table 1 describes the key features of each mode and sub-mode.
Table 1 — Meter communication types
Modes WAY Typical use Chip- Maximum Data coding Description
and rate a and header
duty cycle
sub-
kcps
modes
S1 1 Transmit only 32,768 b Manchester Transmit only; transmits a
0,02 %
meter for and long number of times per day to a
stationary header stationary receiving point.
receiving Transmits in the 1 % duty cycle
readout frequency band. Due to long
header, it is suitable also for
battery economized receiver.
S1-m 1 Transmit only 32,768 b Manchester Transmit only; transmits with a
0,02 %
meter for mobile and short duty cycle limitation of 0,02 % per
or stationary header hour to a mobile or stationary
readout receiving point. Transmits in a 1 %
duty cycle frequency band.
Requires a continuously enabled
receiver.
S2 2 All meter types. 32,768 1 % Manchester Meter unit with a receiver either
Stationary and short continuously enabled or
readout header or synchronized requiring no
optionally extended preamble for wakeup.
long header Also usable for node transponders
or concentrators. A long header is
optional.
T1 1 Frequent 100 0,1 % 3 to 6 and Transmit only with short data
transmission short header bursts typically 3 ms to 8 ms every
(short frame few seconds, operates in a 0,1 %
meters) duty cycle frequency band.
...