SIST EN 61334-4-512:2004

Distribution automation using distribution line carrier systems -- Part 4-512: Data communication protocols - System management using profile 61334-5-1 - Management Information Base (MIB)

Specifies the Management Information Base (MIB), which is used for the management of the communication profile defined by the following standards: EN 61334-5-1, EN 61334-4-32, EN 61334-4-42, and EN 61334-4-41.

Verteilungsautomatisierung mit Hilfe von Trägersystemen auf Verteilungsleitungen -- Teil 4-512: Datenkommunikationsprotokolle - Systemverwaltung bei Anwendung des Profils nach IEC 61334-5-1 - Management-Informationsbasis (MIB)

Automatisation de la distribution à l'aide de systèmes de communication à courants porteurs -- Partie 4-512: Protocoles de communication de données - Administration de systèmes à l'aide du profil 61334-5-1 - MIB (Base d'Informations d'Administration)

Spécifie la MIB (Base d'Informations d'Administration), qui est utilisée pour l'administration du profil de communication défini par les normes suivantes: EN 61334-5-1, EN 61334-4-32, EN 61334-4-42 et EN 61334-4-41.

Distribution automation using distribution line carrier systems - Part 4-512: Data communication protocols - System management using profile 61334-5-1 - Management Information Base (MIB) (IEC 61334-4-512:2001)

General Information

• Status: Published
• Publication Date: 30-Apr-2004
• ICS: 33.040.40 - Data communication networks
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: PSE - Power systems management
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-May-2004
• Due Date: 01-May-2004
• Completion Date: 01-May-2004
• Ref Project: EN 61334-4-512:2002 - Distribution automation using distribution line carrier systems - Part 4-512: Data communication protocols - System management using profile 61334-5-1 - Management Information Base (MIB)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61334-4-512:2004
01-maj-2004
Distribution automation using distribution line carrier systems - Part 4-512: Data
communication protocols - System management using profile 61334-5-1 -
Management Information Base (MIB) (IEC 61334-4-512:2001)
Distribution automation using distribution line carrier systems -- Part 4-512: Data
communication protocols - System management using profile 61334-5-1 - Management
Information Base (MIB)
Verteilungsautomatisierung mit Hilfe von Trägersystemen auf Verteilungsleitungen -- Teil
4-512: Datenkommunikationsprotokolle - Systemverwaltung bei Anwendung des Profils
nach IEC 61334-5-1 - Management-Informationsbasis (MIB)
Automatisation de la distribution à l'aide de systèmes de communication à courants
porteurs -- Partie 4-512: Protocoles de communication de données - Administration de
systèmes à l'aide du profil 61334-5-1 - MIB (Base d'Informations d'Administration)
Ta slovenski standard je istoveten z: EN 61334-4-512:2002
ICS:
33.040.40 Podatkovna komunikacijska Data communication
omrežja networks
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
SIST EN 61334-4-512:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61334-4-512:2004

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SIST EN 61334-4-512:2004
EUROPEAN STANDARD EN 61334-4-512
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2002
ICS 33.200
English version
Distribution automation using distribution line carrier systems
Part 4-512: Data communication protocols –
System management using profile 61334-5-1 –
Management Information Base (MIB)
(IEC 61334-4-512:2001)
Automatisation de la distribution Verteilungsautomatisierung mit Hilfe von
à l'aide de systèmes de Trägersystemen auf Verteilungsleitungen
communication à courants porteurs Teil 4-512: Datenkommunikations-
Partie 4-512: Protocoles de protokolle –
communication de données - Systemverwaltung bei Anwendung
Administration de systèmes à l'aide des Profils nach IEC 61334-5-1 -
du profil 61334-5-1 - MIB Management-Informationsbasis (MIB)
(Base d'Informations d'Administration) (IEC 61334-4-512:2001)
(CEI 61334-4-512:2001)
This European Standard was approved by CENELEC on 2002-02-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61334-4-512:2002 E

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SIST EN 61334-4-512:2004
EN 61334-4-512:2002 - 2 -
Foreword
The text of document 57/544/FDIS, future edition 1 of IEC 61334-4-512, prepared by IEC TC 57,
Power system control and associated communications, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 61334-4-512 on 2002-02-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-02-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61334-4-512:2001 was approved by CENELEC as a
European Standard without any modification.
__________

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SIST EN 61334-4-512:2004
- 3 - EN 61334-4-512:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 61334-4-1 1996 Distribution automation using EN 61334-4-1 1996
distribution line carrier systems
Part 4: Data communication protocols --
Section 1: Reference model of the
communication system
IEC 61334-4-32 1996 Part 4: Data communication protocols -- EN 61334-4-32 1996
Section 32: Data link layer - Logical link
control (LLC)
IEC 61334-4-41 1996 Part 4: Data communication protocols -- EN 61334-4-41 1996
Section 41: Application protocols -
Distribution line message specification
IEC 61334-4-42 1996 Part 4: Data communication protocols -- EN 61334-4-42 1996
Section 42: Application protocols -
Application layer
IEC 61334-4-511 2000 Part 4-511: Data communication EN 61334-4-511 2000
protocols - Systems management -
CIASE protocol
IEC 61334-5-1 2001 Part 5-1: Lower layer profiles - The EN 61334-5-1 2001
spread frequency shift keying (S-FSK)
profile
ISO/IEC 7498-1 1994 Information technology - Open systems EN ISO/IEC 7498-1 1995
interconnection - Basic reference model
Part 1: The basic model
ISO/IEC 7498-3 1997 Part 3: Naming and addressing - -
ISO/IEC 7498-4 1989 Part 4: Management framework - -
ISO/IEC 8509 1987 Information processing systems - Open--
Systems Interconnection - Service
conventions
ISO/IEC 9545 1994 Information technology - Open Systems--
Interconnection - Application Layer
structure

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SIST EN 61334-4-512:2004

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SIST EN 61334-4-512:2004
NORME CEI
INTERNATIONALE IEC
61334-4-512
INTERNATIONAL
Première édition
STANDARD
First edition
2001-10
Automatisation de la distribution à l'aide de
systèmes de communication à courants porteurs –
Partie 4-512:
Protocoles de communication de données –
Administration de systèmes à l'aide
du profil 61334-5-1 –
MIB (Base d'Informations d'Administration)
Distribution automation using
distribution line carrier systems –
Part 4-512:
Data communication protocols –
System management using profile 61334-5-1 –
Management Information Base (MIB)
 IEC 2001 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
T
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 3 –
CONTENTS
FOREWORD.5
1 Scope.7
2 Normative references.7
3 Definitions .9
4 Abbreviations.13
5 Management Information Base (MIB) .15
5.1 General types definition .17
5.2 MIB objects linked to Physical Management Variables.19
5.3 MIB objects linked to MAC Management Variables .21
5.4 MIB objects linked to LLC Management Variables .27
5.5 MIB objects linked to ACSE Management Variables .29
5.6 MIB objects linked to Application Management Variables.31
5.7 MIB System Objects .33
5.8 Other MIB Objects .33
5.9 Summary.43

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DISTRIBUTION AUTOMATION USING
DISTRIBUTION LINE CARRIER SYSTEMS –
Part 4-512: Data communication protocols –
System management using profile 61334-5-1 –
Management Information Base (MIB)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61334-4-512 has been prepared by IEC technical committee 57:
Power system control and associated communications.
The text of this standard is based on the following documents:
FDIS Report on voting
57/544/FDIS 57/562/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged
until 2004. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 7 –
DISTRIBUTION AUTOMATION USING
DISTRIBUTION LINE CARRIER SYSTEMS –
Part 4-512: Data communication protocols –
System management using profile 61334-5-1 –
Management Information Base (MIB)
1 Scope
This part of IEC 61334 specifies the DCP Management Information Base (MIB). This MIB is
used for the management of the communication profile defined by the following standards:
IEC 61334-5-1 (Physical and MAC sublayer), IEC 61334-4-32 (LLC sublayer), IEC 61334-4-42
(Application protocols), and IEC 61334-4-41 (DLMS).
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 61334-4-1:1996, Distribution automation using distribution line carrier systems – Part 4:
Data communication protocols – Section 1: Reference model of the communication system
IEC 61334-4-32:1996, Distribution automation using distribution line carrier systems – Part 4:
Data communication protocols – Section 32: Data link layer – Logical link control (LLC)
IEC 61334-4-41:1996, Distribution automation using distribution line carrier systems – Part 4:
Data communication protocols – Section 41: Application protocols – Distribution line message
specification
IEC 61334-4-42:1996, Distribution automation using distribution line carrier systems – Part 4:
Data communication protocols – Section 42: Application protocols – Application layer
IEC 61334-4-511:2000, Distribution automation using distribution line carrier systems –
Part 4-511: Data communication protocols – Systems management – CIASE protocol
IEC 61334-5-1:2001, Distribution automation using distribution line carrier systems – Part 5-1:
Lower layer profiles – The spread frequency shift keying (S-FSK) profile
ISO/IEC 7498-1:1994, Information technology – Open Systems Interconnection – Basic
Reference Model – Part 1: The Basic Model
ISO/IEC 7498-3:1997, Information technology – Open Systems Interconnection – Basic
Reference Model – Part 3: Naming and addressing
ISO/IEC 7498-4:1989, Information technology – Open Systems Interconnection – Basic
Reference Model – Part 4: Management framework
ISO/IEC 8509:1987, Information processing systems – Open Systems Interconnection –
Service conventions
ISO/IEC 9545:1994, Information technology – Open Systems Interconnection – Application
Layer structure

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 9 –
3 Definitions
For the purpose of this part of IEC 61334, the following terms as defined in ISO/IEC 7498-1,
ISO/IEC 7498-3, ISO/IEC 7498-4, ISO/IEC 8509, ISO/IEC 9545, IEC 61334-4-1, IEC 61334-4-41,
IEC 61334-4-42 and IEC 61334-4-511 and the additional definition apply.
3.1 ISO/IEC 7498
a) open system,
b) application-process,
c) (N)-layer,
d) (N)-sublayer,
e) (N)-service,
f) (N)-service-access-point,
g) (N)-protocol,
h) (N)-protocol-data-unit,
i) (N)-service-data-unit,
j) systems-management,
k) application-entity,
l) application-service-element,
m) user-element.
3.2 ISO/IEC 7498-3
a) (N)-address,
b) (N)-selector,
c) (N)-association,
d) (N)-directory-function,
e) (N)-entity,
f) (N)-entity-title,
g) system-title.
3.3 ISO/IEC 7498-4
a) Systems management application-entity,
b) OSI Management,
c) Management Object,
d) Management Information Base.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 11 –
3.4 ISO/IEC 8509
a) primitive,
b) request,
c) indication,
d) response,
e) confirm.
3.5 ISO/IEC 9545
a) application-context.
3.6 IEC 61334-4-1
a) NEW-address,
b) AllSMAE-Title.
3.7 IEC 61334-4-41
a) client,
b) server,
c) Virtual Distribution Equipment (VDE).
3.8 IEC 61334-4-42
a) application context.
3.9 IEC 61334-4-511
a) initiator,
b) active initiator,
c) new/authorized systems,
d) manager,
e) new system,
f) new system title,
g) registered system,
h) reporting system,
i) system.
3.10
application-identifier
identifies an application in a system. Two applications associated with the same VDE-type
attribute cannot have the same application-identifier.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 13 –
4 Abbreviations
ACSE Association Control Service Element
ASE Application Service Element
CIASE Configuration Initiation ASE
DASE DLMS Application Service Element
DCP Data Communication Protocols
DLMS Distribution Line Message Specification
IEC International Electrotechnical Commission
ISO International Organization for Standardization
LLC Logical Link Control
L-SAP Link Service Access Point
MAC Medium Access Control
MIB Management Information Base
OSI Open Systems Interconnection
OSIE Open Systems Interconnection Environment
PDU Protocol Data Unit
SAP Service Access Point
SDU Service Data Unit
SMAE Systems Management Application Entity
VDE Virtual Distribution Equipment
The following initials are used to specify the layers or sublayers:
a) PHY – Physical layer,
b) DL – Data_Link layer,
c) MA – MAC sublayer,
d) L – LLC sublayer,
e) CI – CIASE sublayer (Application layer).

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 15 –
5 Management Information Base (MIB)
This standard provides a selection of DLMS objects gathered together in a so-called
Management Information Base (MIB). This selection corresponds to a set of variables that are
used for the management of the PLAN (Power Line Automation Network) profile. This profile is
based on IEC 61334-5-1 (physical layer and MAC sublayer), IEC 61334-4-32 (LLC sublayer),
IEC 61334-4-42 (Application protocols), IEC 61334-4-511 (CIASE protocol) and IEC 61334-4-41
(DLMS) standards.
From a DLMS point of view, an MIB is associated with a specific VDE called the "Management
VDE".
Characteristics of the Management VDE:
The Management VDE is accessible from the LLC sublayer through an SAP equal to 0.
The conformance block characteristics of this VDE are described in IEC 61334-4-511.
The VDE type is 0.
The resources attribute of the VDE is associated with the Visible String: PLAN MIB 1.0.
The DLMS view of the MIB leads to consider mainly management Named Variable Objects.
The types of the objects that are involved in the systems interoperability are defined in a DLMS
objects description way.
The Named Variable Objects are sorted according to the communication layer to which they
are mainly bound. The present clause describes the objects parameters, the specific type of
the named variable described and any remarks on their use.
A DLMS name space from 0 to 4095 (in decimal notation) is reserved for extensions of
standardized Management Objects. Specific manufacturer objects can be added to the
Management VDE provided that their names are greater than 4096 (in decimal notation).
The present MIB is designed to facilitate implementation in very simple devices. It is also
anticipated that DLMS will exchange information based on other standardized MIB definitions.
For example, SNMP RMON (Internet RFC 1757: “Remote Network Monitoring Management
Information Base”, February 1995) is a widely applied set of definitions supported in many
network protocols for remote management. Since the name space of DLMS is constrained,
mapping to this large data structure would consume too much of the limited name space. It can
therefore be accomplished through the definition of a single Named Variable Object of type
STRUCTURE, and, Detailed Access would be used to navigate the structure to its individual
components. The name 4088 (in decimal notation) is reserved for the future definition of
SNMPs RMON MIB. The Named Variable Objects from 4032 to 4080 are similarly reserved for
definition of other MIBs including CMIS/CMIP based MIBs.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 17 –
5.1 General types definition
5.1.1 Structure
The DCP Systems Management uses the same types as DLMS (see IEC 61334-4-41, 10.2 for
further details). However, there is a need for a special type “list”. The DCP System
Management uses the existing type “array” where the type “list” is needed. The type “array” for
that purpose has a special characteristic; i.e. it has a maximum size and a variable number of
elements.
Table 1 – Type Description argument
Type Description Code
Kind of Type M
Array[-list] S
[Maximum] number of Elements M
Type Description M
Structure S
List of Type Description M
Simple S
Class M
A type is described by a recursively specified argument. This argument describes a branching
tree, called a type tree. The leaves of this tree are the simple data elements of the variable
described by the type. If a type describes a complex variable, then the type tree will have one
or more non-leaf nodes, each of which represents a complex type constructed from the
possible complex types represented by the subordinate nodes of the type tree.
5.1.2 Arguments
The Kind of Type argument, of type CHOICE, indicates the selection which has been chosen to
describe this node of the type tree. The possible values for this argument are: ARRAY,
STRUCTURE or SIMPLE. Only the array type is described here, as it can be different from that
of the one in DLMS.
The Array argument is selected when the selection for the Type Description argument is
ARRAY. It indicates that the node being described is a complex type that is constructed from
an ordered sequence of elements, all of a single type. The first element is numbered zero.
– The [maximum] number of elements argument, of type Unsigned8, specifies the [maximum]
number of elements in the array[-list]: if the array has a variable length (list), it indicates the
maximum number of elements, or else it specifies the number of elements (which is a
constant). It must be specified in the implementation specifications.
– The Type Description argument specifies the type of the array elements through a recursive
reference to the Type Description argument.
The arrays and the lists have the same type description.
Detailed access is not allowed on lists, but is allowed on arrays.
When the management object specified in the following is an array, it is always a variable
length array: a list. Its name contains the word "list" (like L-SAP-list). When it is a counter, its
name contains the word “counter”.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 19 –
5.2 MIB objects linked to Physical Management Variables
For further details, see IEC 61334-5-1. The following MIB objects are directly associated with
the Physical Management Variables of the same name.
1. delta-electrical-phase::= NamedVariableObject {
variable-name 8, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description Unsigned8,
read-write-flag READ-ONLY,
available TRUE
}
The delta-electrical-phase variable indicates the phase difference between the client's
connecting phase and the server's connecting phase. The following values are predefined:
0: Not Defined: the server is temporarily not able to determine the phase difference,
1: the server system is connected to the same phase as the client system,
2: the phase difference between the server's connecting phase and the client's connecting
phase is equal to 60 degrees,
3: the phase difference between the server's connecting phase and the client's connecting
phase is equal to 120 degrees,
4: the phase difference between the server's connecting phase and the client's connecting
phase is equal to 180 degrees,
5: the phase difference between the server's connecting phase and the client's connecting
phase is equal to −120 degrees,
6: the phase difference between the server's connecting phase and the client's connecting
phase is equal to −60 degrees.
2. max-receiving-gain::= NamedVariableObject {
variable-name 136, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description Unsigned8,
read-write-flag READ-WRITE,
available TRUE
}
The max-receiving-gain variable corresponds to the maximum allowed gain bound to be used
by the server system in the receiving mode. No unit is specified. The unit, the default value as
well as the authorized values shall be specified in the implementation specifications.

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SIST EN 61334-4-512:2004
61334-4-512 © IEC:2001 – 21 –
5.3 MIB objects linked to MAC Management Variables
See IEC 61334-5-1 for more explanations. Among the following MIB objects, only the
synchronisation-locked object is not directly linked to a MAC Management Variable. All the
other objects have the same names as the associated MAC Management Variable described in
IEC 61334-5-1.
3. mac-address::= NamedVariableObject {
variable-name 32, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description Unsigned16,
read-write-flag READ-ONLY,
available TRUE
}
The mac-address variable contains the value of the physical attachment (MAC address)
associated to the local system. In the unconfigured state, the MAC address is NEW-address.
This variable is locally written by the CIASE when the system is registered (with a Register
service). The value is used in each outgoing or incoming frame. The default value is "NEW-
address".
This variable is set to NEW:
– by the MAC sublayer, once the time-out-not-addressed delay is exceeded,
– when the reset-NEW-not-synchronised MIB object is written (see the description of this
object).
When this variable is set to NEW:
1 the system loses its synchronisation (function of the MAC-sublayer)
2 the system automatically aborts all its abortable VAA objects that are linked to the mac-
address.
4. mac-group-addresses::= NamedVariableObject {
variable-name 40, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description SEQUENCE OF Unsigned16,
read-write-flag READ-WRITE,
available TRUE
}
The mac-group-addresses variable contains a set of MAC group addresses used for broadcast
purposes. The ALL-configured, ALL-physical-address and NO-BODY addresses are not
included in this list. These ones are internal predefined values. This variable shall be written by
the initiator using DLMS services to declare specific MAC group addresses on a server system.
This variable is locally read by the MAC sublayer when checking the destination address field
of a MAC frame not recognized as an individual address or as one of the three predefined
values (ALL-configured, ALL-physical and NO-BODY addresses).
The list has a limited size. This size must be specified in the implementation specifications.

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61334-4-512 © IEC:2001 – 23 –
5. repeater::= NamedVariableObject {
variable-name 48, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description Unsigned8,
read-write-flag READ-WRITE,
available TRUE
}
The repeater variable specifies whether the system effectively repeats all frames or not. If the
repeater variable is equal to 0, the server system should never repeat the frames. If it is set to
1, the server system is a repeater: it has to repeat all frames received without error and with a
current credit greater than zero. This variable may be written or read using DLMS services. The
value is internally read by the MAC sublayer, each time a frame is received. The default value
is 1.
6. synchronisation-confirmation-time-out::= NamedVariableObject {
variable-name 24, -- in decimal
scope-of-access VDE-specific,
scope-may-change TRUE,
life-time-is-vde TRUE,
type-description Unsigned16, -- in seconds
read-write-flag READ-WRITE,
available TRUE
}
A server system which just gets frame synchronised (detection of a data path equal to
AAAA54C7 hex) will automatically lose its frame synchronisation if the MAC sublayer does not
identify a valid MAC frame during a period of time equal to the value of the synchronisation-
confirmation-time-out variable. This delay is expressed in seconds and starts after the
reception of the first four bytes of a physical frame. The value of this variable can be modified
b
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