Home and Building Electronic Systems (HBES) - Part 5-1: Media and media dependent layers - Power line for HBES Class 1

This European Standard defines the mandatory and optional requirements for the medium specific physical and data link layer of power line Class 1 PL110.
Data link layer interface and general definitions, which are medium independent, are given in EN 50090 4-1.

Elektrische Systemtechnik für Heim und Gebäude (ESHG) - Teil 5-1: Medien und medienabhängige Schichten - Signalübertragung auf elektrischen Niederspannungsnetzen für ESHG Klasse 1

Systèmes électroniques pour les foyers domestiques et les bâtiments (HBES) - Partie 5-1: Medias et couches dépendantes des medias - Courants porteurs pour HBES Classe 1

Le présent document définit les exigences obligatoires et facultatives relatives à la couche physique et de liaison des données spécifiques à un média, pour des courants porteurs de classe 1 PL110. Les définitions de l'interface de la couche liaison de données ainsi que les définitions générales, qui sont indépendantes du média, sont données dans l'EN 50090 4 1.

Stanovanjski in stavbni elektronski sistemi (HBES) - 5-1. del: Mediji in nivoji, odvisni od medijev - Napajalni vod za HBES razreda 1

General Information

Status
Published
Publication Date
07-May-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-May-2020
Due Date
10-Jul-2020
Completion Date
08-May-2020

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SLOVENSKI STANDARD
SIST EN 50090-5-1:2020
01-junij-2020
Nadomešča:
SIST EN 50090-5-1:2005
Stanovanjski in stavbni elektronski sistemi (HBES) - 5-1. del: Mediji in nivoji,
odvisni od medijev - Napajalni vod za HBES razreda 1

Home and Building Electronic Systems (HBES) - Part 5-1: Media and media dependent

layers - Power line for HBES Class 1
Elektrische Systemtechnik für Heim und Gebäude (ESHG) - Teil 5-1: Medien und
medienabhängige Schichten - Signalübertragung auf elektrischen
Niederspannungsnetzen für ESHG Klasse 1

Systèmes électroniques pour les foyers domestiques et les bâtiments (HBES) - Partie 5-

1: Medias et couches dépendantes des medias - Courants porteurs pour HBES Classe 1

Ta slovenski standard je istoveten z: EN 50090-5-1:2020
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 50090-5-1:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 50090-5-1:2020
---------------------- Page: 2 ----------------------
SIST EN 50090-5-1:2020
EUROPEAN STANDARD EN 50090-5-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 35.100.10; 35.100.20; 97.120 Supersedes EN 50090-5-1:2005 and all of its
amendments and corrigenda (if any)
English Version
Home and Building Electronic Systems (HBES) - Part 5-1: Media
and media dependent layers - Power line for HBES Class 1

Systèmes électroniques pour les foyers domestiques et les Elektrische Systemtechnik für Heim und Gebäude (ESHG) -

bâtiments (HBES) - Partie 5-1: Medias et couches Teil 5-1: Medien und medienabhängige Schichten -

dépendantes des medias - Courants porteurs pour HBES Signalübertragung auf elektrischen Niederspannungsnetzen

Classe 1 für ESHG Klasse 1

This European Standard was approved by CENELEC on 2020-01-09. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50090-5-1:2020 E
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
Contents Page

European foreword ................................................................................................................. 3

1 Scope ............................................................................................................................... 4

2 Normative references ....................................................................................................... 4

3 Terms, definitions and symbols ........................................................................................ 4

3.1 Terms and definitions .............................................................................................. 4

3.2 Abbreviations .......................................................................................................... 5

4 Requirements for HBES Class 1, power line PL110 .......................................................... 5

4.1 Physical layer PL110 ............................................................................................... 5

4.1.1 General ....................................................................................................... 5

4.1.2 Transmission medium .................................................................................. 7

4.1.3 Medium attachment unit (MAU) .................................................................... 8

4.1.4 Installation topology .................................................................................. 10

4.1.5 Installation requirements ........................................................................... 10

4.1.6 Surge protection ........................................................................................ 11

4.1.7 Services at the data link layer / physical layer interface ............................. 11

4.1.8 Features of PL110 physical layer ............................................................... 12

4.1.9 PL110 character overview ......................................................................... 12

4.2 Data link layer type PL110 ..................................................................................... 16

4.2.1 General ..................................................................................................... 16

4.2.2 Domain Address/Individual Address/Group Address .................................. 16

4.2.3 Frame formats ........................................................................................... 17

4.2.4 Medium access control .............................................................................. 21

4.2.5 Data link layer services ............................................................................. 25

4.2.6 Parameters of layer-2 ................................................................................ 27

4.2.7 Data link layer protocol .............................................................................. 27

4.2.8 The layer-2 of a repeater ........................................................................... 28

Bibliography .......................................................................................................................... 29

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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
European foreword

This document (EN 50090-5-1:2020) has been prepared by CLC/TC 205, “Home and Building Electronic

Systems (HBES)”
The following dates are fixed:
• latest date by which this document has (dop) 2020-10-24
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-04-24
standards conflicting with this document
have to be withdrawn

This document will supersede EN 50090-5-1 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

EN 50090-5-1 is part of the EN 50090 series of European Standards, which comprises the following

parts:
— Part 1: Standardization structure
— Part 3: Aspects of application
— Part 4: Media independent layers
— Part 5: Media and media dependent layers
— Part 6: Interfaces
— Part 7: System management
NOTE Part 2 has been withdrawn.
———————

This document was prepared with the help of CENELEC co-operation partner KNX Association, De Kleetlaan 5,

B-1831 Diegem.
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
1 Scope

This document defines the mandatory and optional requirements for the medium specific physical and

data link layer of power line Class 1 PL110.

Data link layer interface and general definitions, which are medium independent, are given in

EN 50090-4-1.
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 50090-1, Home and Building Electronic Systems (HBES) - Part 1: Standardization structure

EN 50090-4-2, Home and Building Electronic Systems (HBES) - Part 4-2: Media independent layers -

Transport layer, network layer and general parts of data link layer for HBES Class 1

EN 50090-5-2, Home and Building Electronic Systems (HBES) - Part 5-2: Media and media dependent

layers - Network based on HBES Class 1, Twisted Pair

EN 50065-1, Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -

Part 1: General requirements, frequency bands and electromagnetic disturbances

EN 50065-7, Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -

Part 7: Equipment impedance

EN 50160, Voltage characteristics of electricity supplied by public electricity networks

EN 55016-1-2, Specification for radio disturbance and immunity measuring apparatus and methods - Part

1-2: Radio disturbance and immunity measuring apparatus - Coupling devices for conducted disturbance

measurements (CISPR-16-1-2)

EN 61643-11, Low-voltage surge protective devices - Part 11: Surge protective devices connected to low-

voltage power systems - Requirements and test methods (IEC 61643-11)
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 50090-1 and the following 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
3.1.1
differential mode
PL signals that are injected between phase and neutral
3.1.2
router
connects one sub-network with another sub-network
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
3.1.3
PL110

power line signal operating in the frequency band 95 kHz to 125 kHz according to EN 50065-1

3.2 Abbreviations
HBES Class 1 refers to simple control and command
HBES Class 2 refers to Class 1 plus simple voice and stable picture transmission
HBES Class 3 refers to Class 2 plus complex video transfers
ACK Acknowledgement
NRZ Non Return to Zero
SPD Surge Protection Devices
LPDU Link layer Protocol Data Unit
CS Check Sequence
TPDU Transport layer Protocol Data Unit
APDU Application layer Protocol Data Unit
NACK Not acknowledge
DAF Destination Address Flag
FSK Frequency Shift Keying
SFSK Spread Frequency Shift Keying
MSK Minimum Shift Keying
FEC Forward Error Correction
FCS Frame Check Sequence
CTRL Control field
MAU Medium Attachment Unit
NPCI Network Protocol Control Information
CSMA Carrier Sense Multiple Access protocol
DOA Domain Address
4 Requirements for HBES Class 1, power line PL110
4.1 Physical layer PL110
4.1.1 General

This clause describes the physical layer characteristics of the PL110 power line signalling which operates

in the frequency band 95 kHz to 125 kHz band as described in EN 50065-1 and having a nominal centre

frequency of 110 kHz.
The main characteristics of the PL110 physical layer are:
— a spread frequency shift keying signalling;
— asynchronous transmission of data packets;
— symbols globally synchronized to the mains frequency;
— half duplex bi-directional communication.
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)

Electrical wiring in the building/home should be in compliance with the current national regulations. Power

line communication is described in EN 50065-1 (general requirements, frequency allocation and

electromagnetic disturbances).

The electric power distribution network normally determines the physical topology of the power line

network. The structure of this network may be 1 or 3-phase. The rated voltage between one phase and

the neutral shall be 230 V. PL110 signals are injected between phase and neutral.

General requirements for the physical layer type PL110 are given in Table 1.
Table 1 — General requirements for physical layer PL110
Characteristic Description
Medium electrical power distribution network
Topology installation dependant (e.g. linear, star, tree)
Bit rate 1 200 bps
Mains frequency 50 Hz (according to EN 50160)
Number of Domain Addresses 255
Number of Individual Addresses 32 767
Modulation type spread frequency shift keying (SFSK)
Frequency for logical “0“ 105,6 kHz ± 100 ppm
Frequency for logical “1“ 115,2 kHz ± 100 ppm
Bit duration 833,33 µs
Maximum output level a
122 dBµV
Input sensitivity b
≤ 60 dBµV
Device class c
Class 122
Compliance to standards EN 50065-1
Measurement according to EN 50065-1.
With artificial network according to EN 55016-1-2 [(50 µH + 5 Ω) / 50 Ω].

Equipment manufactured to Class 116 according to EN 50065-1 will now meet the requirements of

Class 122 and may be marked Class 116 provided that its output complies with the previous standard.

The logical structure of the physical layer PL110 entity is shown in Figure 1. Each PL110-device includes

one.
The PL110 entity shall consist of three blocks:
— connector;
— medium attachment unit (MAU);
— error correction.
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
Figure 1 — Structure of the MAU (example)
4.1.2 Transmission medium
4.1.2.1 Requirements for protection against electrical shocks and connectors

The PL110 devices are connected to the 230 V installation network. The requirements for protection

against electrical shocks for human beings (and animals) and connectors shall be considered within the

complete device and are not subject to the physical layer description.

These requirements are fixed in the installation and equipment standards (safety standards).

4.1.2.2 Power line cables

Insofar as installation wires are used as power line cables, national regulations apply. Normally the type

of cable, the connected loads and the topology of the network is not known. Some widespread cables are

listed in Table 2. In contrast to the theoretical values, the impedance at one network access point is

determined more by the load than by the cabling.

Typical cables for fixed electrical installation are “thermoplastic-insulated and sheathed cable“, “PVC-

insulated flat cable, overall covering vulcanized rubber“ or “sheathed metal-clad wiring cable with PVC-

insulated cores sheet-zinc cover with additional PVC-jacket” .
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
Table 2 — Example of typical cable characteristics
Feature Description
2 2
Cross-section 1,5 mm up to 4 mm
Used wires Phase and Neutral
Resistance 25 µΩ/m to 50 mΩ/m
Capacity 15 pF/m to 100 pF/m
Inductance 1,2 µH/m to 1,5 µH/m

NOTE The use of shielded cables and cables with cross sections greater than 35 mm can influence PL110

signalling significantly.
4.1.3 Medium attachment unit (MAU)
4.1.3.1 General

The medium attachment unit converts the frequency-coded signals into values representing logical ones

and zeros and vice versa. In parallel, a power supply circuit may be connected to the medium. Signal

converter and power supply shall be independent from each other. The power supply shall meet the

following requirements in Table 3:
Table 3 — Power supply of the MAU
Power supply Nominal values
Receiving 5 V at 30 mA / 24 V at 1 mA
mode
Transmitting 5 V at 30 mA / 24 V at 10 mA - 50 mA
mode (dependent on impedance)
Compliance is checked by measurement.
The power supply of the MAU may be internal or external.
4.1.3.2 Signal encoding

A signal of 105,6 kHz for a period of 833.3 µs shall correspond to a logical “0“, a signal of 115,2 kHz for

µs to a logical “1“. See Figure 2.
a period of 833.3
Figure 2 — Signal encoding
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)

These NRZ-signals are superimposed on the 230 V/50 Hz mains AC-voltage. The maximum amplitude of

the signal shall be limited to 122 dBμV, measured with EN 55016-1-2 artificial mains network according

EN 50065-1. The sensitivity of the receiver shall be better than 60 dBµV.

For lowest disturbances, the change between adjacent symbols shall be phase continuous.

Compliance is checked by measurement.

4.1.3.3 Overlapping of logical “0” or “1” resulting in fade-in / fade-out effects

Overlapping of logical “0” or “1”-symbols, e.g. the simultaneous transmission of equal information at the

same time from several MAU's (e.g. common ACK), results in fade-in / fade-out effects. Due to slight

frequency deviations between several MAU's the signal fades periodically with the difference of the MAU-

frequencies. In PL110 power line communication this case can be avoided by setting a unique group

response flag to each assigned Group Address.
4.1.3.4 Overlapping of logical “0” and “1”

Overlapping of logical “0” and “1”-symbols, e.g. the simultaneous transmission of different information at

the same time from several MAU's, results in a collision. While there is no indication of collision for any

MAU, the probability of this state is minimized by special bus access mechanism.
Figure 3 — Idealized overlapping of 105,6 kHz and 115,2 kHz
Figure 3 shows the ideal overlapping of 105,6 kHz and 115,2 kHz.
4.1.3.5 Impedance of the MAU

To limit the influence of connected MAU's on the characteristic of the power line bus the impedance in

receiving mode shall be high. For signal injection with minimum losses, the impedance in transmitting

mode shall be low. When tested according to EN 50065-7, the limits for PL110 shall be as in Table 4:

Table 4 — Requirements for the impedance of the MAU
Impedance on Requirements
Receiving mode |Z | ≥ 80 Ω at 100 kHz to 125 kHz
Transmitting mode |Z | ≤ 20 Ω at 100 kHz to 125 kHz
out
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
4.1.3.6 PL bus coupling
Key
Ck coupling capacitor, X2-type
T1 coupling transformer
D1 transient voltage protection diode
R1 resistor for discharging Ck (optional)
Figure 4 — Example of a PL inductive coupling circuit

Electrical coupling of signals to the power line is done by special circuits. In general, capacitive or

inductive coupling may be used. Inductive coupling may be combined with electrical insulation or not. For

example, see Figure 4.
4.1.4 Installation topology

The structure of an electrical installation may be linear, star, ring, tree or any combination, for example

see Figure 5. Referring to the electrical distribution board as the centre, the topology normally has a star

structure. Each branch of the electrical distribution network may have its own different structure.

Figure 5 — Example of a typical PL topology
4.1.5 Installation requirements

When installing power line networks, national and international regulations as well as standards apply.

Additional instructions about the communication aspects of the network may be given in the

manufacturers instruction sheet.
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
4.1.6 Surge protection

The electrical installation might be provided with external surge protection. Where external SPD is

provided, it shall comply with type 1 (for primary protection) or type 2 (for secondary protection) according

to EN 61643-11.
4.1.7 Services at the data link layer / physical layer interface

Two services Ph_Data.req (p_class, p_data) and Ph_Data.ind (p_class, p_data) shall be implemented at

the data link / physical layer interface:

Ph_Data.req shall be called by the data link layer. Each Ph_Data.req() service primitive shall transfer a

single octet to the physical layer. The class parameter shall contain timing information.

p_class: start_of_sys.prio_frame: This parameter value shall be used to transmit training

sequence, preamble I, preamble II and character after at
least 58 bit times idle line since the last bit of the
proceeding data link message cycle.

start_of_of_prio_frame: This parameter value shall be used to transmit training

sequence, preamble I, preamble II and character after at
least 74 + (n-16) | 0 ≤ n ≤ 7 bit times idle line since the last
bit of proceeding data link message cycle.

start_of_repeated_frame: This parameter value shall be used to transmit training

sequence, preamble I, preamble II and character after
exactly 40 bit times since the last bit of the proceeding
L_Data request.
inner_frame_char: This parameter value shall be used to transmit a character
without any time gap after the last bit of the proceeding
character.
ack_char: This parameter value shall be used to transmit training
sequence, preamble I, preamble II and character after
exactly 4 bit times after the last bit of the proceeding
L_Data request.
nack_char: This parameter value shall be used to transmit training
sequence, preamble I, preamble II and character after
exactly 22 bit times after the last bit of the proceeding
L_Data request.
p_data: octet: This parameter value shall contain the octet to be
expanded by four error corrections to a character and to
be transmitted. Due to the fact that no collision-detection
is carried out during transmission the return value of a
Ph_Data.con shall always be “Ok”.

Ph_Data.ind shall be called by the physical layer. Each Ph_Data.ind() service primitive shall transfer a

single octet to the data link layer.
Ph_Data.ind (p_class, p_data)

p_class: start_of_frame: This parameter value shall be used to indicate that after

detection of preamble I + preamble II a character was
received
inner_frame_char: This parameter value shall be used to indicate that a
character was received immediately after the proceeding
bit
ack_char: This parameter value shall be used to indicate that after
detection of preamble I + preamble II a character was
received
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
bit_error: This parameter value shall be used to indicate that an
uncorrectable bit error was detected in the received
character and that reception was terminated.
p_data: octet: This parameter value shall be used to indicate that the
data octet error was corrected and extracted from the
received character
4.1.8 Features of PL110 physical layer

This chapter describes the frame format, error correction and synchronization of PL110 medium.

Compliance to the requirements of this subclause are subject to transient and logical measurement

equipment.
4.1.9 PL110 character overview
4.1.9.1 General

Each PL110 frame shall start with a training sequence and a preamble. Training sequence and preamble

shall not be coded. Each data link layer octet shall be coded to a 12 bit character (8 bits data + 4 bits

error correction). For example, see Figure 6.
Figure 6 — Character

During transmission and reception no time gaps are allowed between the bits of a character.

4.1.9.2 Frame structure

The datagram shall consist of training sequence, preamble I / II, LPDU + check sequence (CS) and the

Domain Address. Frame check sequence shall be calculated with respect to Twisted Pair type 1 LPDU as

in EN 50090-5-2, which shall itself be identical to the Twisted Pair type 1 LPDU. The CS for physical layer

Twisted Pair type 1 and PL110 shall therefore be identical. For example, see Figure 7 and 8.

Figure 7 — Structure of a datagram
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
Figure 8 — Structure of an acknowledgement frame
4.1.9.3 The training sequence

After switching into the status start_of_pdu the physical layer shall transmit a training sequence of 4 bit

duration. The bit sequence is fixed to [0 1 0 1].
4.1.9.4 The preamble transmission start

The next 16 bit shall consist of the preamble I and II. This preamble shall allow the receiver to start. The

sequence of each preamble is fixed to B0h.
4.1.9.5 Faulty transmission detection

The error correction of the PL110 physical layer shall be done by power line (12,8) block-coding.

Generation shall be calculated with the following matrix in Figure 9:
Figure 9 — Generation matrix of PL110

Coding shall result in an overhead of 4 bit referring to one octet. The hamming-distance of this coding

shall be minimum 3. With this (12,8) coding it shall be possible to correct every single bit error in a 12 bit

character and to recognize some multiple errors.

The code shall be calculated by determining redundancy r as the function of the transformation matrix T

and the octet x:
r Tx⋅
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)

For decoding an estimation r´ of the redundancy dependant on the incoming data d shall be performed.

The estimated redundancy shall be subtracted by the received redundancy d . The result shall be a

syndrome with the value of s indicating the column of the error. For example, see Table 5. Correction

shall be done by inverting this bit. For an error-free transmission the difference of r´ and d shall be 0.

d= d d
0 u
r ' T⋅d
sd− r '
Table 5 — Table of syndromes related to errors
Value of the
3 5 6 7 9 10 11 12 8 4 2 1 13 14 15 0
syndrome
error-
Error location 1 2 3 4 5 6 7 8 9 10 11 12 error
free
For all calculations, GF2 arithmetic shall be used as in Figure 10:
Figure 10 — Operations of Galois-Field GF2
EXAMPLE 1:

x := 1 0 10 10 10 octet to be transmitted

  
0000 1111 0
  
0 111 000 1 1

r= T⋅=x  ⋅=x  redundancy

10 1 10 1 10 1
  
1 10 1 10 10 1
  
  
 
 
c x , r 10 10 10 10 0 1 1 1 character to be transmitted
 
 
↓ Transmission error
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)
 
d d ,d 1 000 1 0 1 00 111 received character
ou
 

r'= T ⋅ d = ... = 0 0 0 1 estimated redundancy

s d−=r' 0 1 1 0 6
u 10

Referring to Table 6 a syndrome value of 6 shall correspond to an error in column 3. Inverting bit number

3 shall lead to the corrected frame.
4.1.9.6 Synchronization

The mains zero-crossing period shall be 10 ms in single phase systems and 33. ms in triple phase

systems (for nominal mains frequency). For example, see Figure 11. By dividing the 33. ms time base by

an integer the set of possible bit widths (and bit rates respectively) in triple phase systems shall be

calculated:
bit rate=n⋅∈300 bps n Ν
Figure 11 — Three phase system

The start of a transmission shall not be placed exactly at the mains zero-crossing due to internal delays of

the coupling circuit. The delay shall however not exceed the value shown below.
T ≤ 40 µs

In order to compensate deviations of mains frequencies PL110 MAU's shall detect the zero crossing of

the mains voltage and measure the actual mains frequency. If the mains frequency (received in the

described way) is placed within the permissible tolerance, the bit width shall be calculated by the following

formula:
actual mains frequency
actual bit width=
*1200
nominal mains frequency
= =
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SIST EN 50090-5-1:2020
EN 50090-5-1:2020 (E)

With the help of the first transmitted bit the transmitter shall fix its bit width to the nominal bit width of

μs. On receiving the first preamble the receiver shall also fix its bit width to the nominal bit width

833.3
of 833.3 μs and correct the beginning of the following bit by:
12 × (actual bit width - nominal bit width)
4.2 Data link layer type PL110
4.2.1 General

This chapter describes the addressing, frame formats and access control of PL110 medium. Compliance

to the requirements of this subclause are subject to transient and logical measurement equipment.

4.2.2 Domain Address/Individual Address/Group Address

Every PL110-device shall have a Domain Address. The Domain Address shall be a two octet number.

The most significant octet shall be set to zero, the lower significant octet shall contain the number of the

Domain Address. For example, see Table 6.

Request frames with Domain Address zero shall be interpreted as system-broadcasts.

Table 6 — Domain Address
Domain Address
Octet 0 Octet 1
b B b b b b b b b b b B b b B b
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 Number

Every PL110-device (even a router) shall have a unique Individual Address in a network. The Individual

Address shall be a two octet value that consists of an 8-bit sub-network address, and an 8-bit device

address. See Table 7, for example.
Table 7 — Individual Address
Individu
...

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