EN 61850-8-1:2004

SLOVENSKI STANDARD
01-november-2005
Komunikacijska omrežja in sistemi v postajah – 8-1. del: Preslikave posebne
komunikacijske storitve (SCSM) – Preslikave v MMS (ISO 9506-1 in ISO 9506-2) in
ISO/IEC 8802-3 (IEC 61850-8-1:2004)
Communication networks and systems in substations -- Part 8-1: Specific
Communication Service Mapping (SCSM) - Mappings to MMS (ISO 9506-1 and ISO
9506-2) and to ISO/IEC 8802-3
Kommunikationsnetze und -systeme in Stationen -- Teil 8-1: Spezifische Abbildung von
Kommunikationsdiensten (SCSM) - Abbildungen auf MMS (nach ISO 9506-1 und ISO
9506-2) und ISO/IEC 8802-3
Réseaux et systèmes de communication dans les postes -- Partie 8-1: Implémentation
spécifique des services de communication (SCSM) - Cartographie avec MMS (ISO 9506-
1 et ISO 9506-2) et l'ISO/CEI 8802-3
Ta slovenski standard je istoveten z: EN 61850-8-1:2004
ICS:
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61850-8-1
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2004
ICS 33.200
English version
Communication networks and systems in substations
Part 8-1: Specific Communication Service Mapping (SCSM) –
Mappings to MMS (ISO 9506-1 and ISO 9506-2)
and to ISO/IEC 8802-3
(IEC 61850-8-1:2004)
Réseaux et systèmes de communication Kommunikationsnetze und -systeme
dans les postes in Stationen
Partie 8-1: Implémentation spécifique Teil 8-1: Spezifische Abbildung
des services de communication (SCSM) - von Kommunikationsdiensten (SCSM) -
Cartographie avec MMS (ISO 9506-1 Abbildungen auf MMS (nach ISO 9506-1
et ISO 9506-2) et l'ISO/CEI 8802-3 und ISO 9506-2) und ISO/IEC 8802-3
(CEI 61850-8-1:2004) (IEC 61850-8-1:2004)

This European Standard was approved by CENELEC on 2004-04-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61850-8-1:2004 E
Foreword
The text of document 57/692/FDIS, future edition 1 of IEC 61850-8-1, prepared by IEC TC 57, Power
systems management and associated information exchange, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 61850-8-1 on 2004-04-01.
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) 2005-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-04-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61850-8-1:2004 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61850-8-1:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60874-10-1 1997 Connectors for optical fibres and cables - -
Part 10-1: Detail specification for fibre
optic connector type BFOC/2,5
terminated to multimode fibre type A1

IEC 60874-10-2 1997 Part 10-2: Detail specification for fibre - -
optic connector type BFOC/2,5
terminated to single-mode fibre type B1

IEC 60874-10-3 1997 Part 10-3: Detail specification for fibre - -
optic adaptor type BFOC/2,5 for single
and multimode fibre
1)
IEC/TS 61850-2 - Communication networks and systems in - -
substations
Part 2: Glossary
1) 2)
IEC 61850-5 - Part 5: Communication requirements for EN 61850-5 2003
functions and device models
1) 2)
IEC 61850-7-1 - Part 7-1: Basic communication structure EN 61850-7-1 2003
for substation and feeder equipment -
Principles and models
1) 2)
IEC 61850-7-2 - Part 7-2: Basic communication structure EN 61850-7-2 2003
for substation and feeder equipment -
Abstract communication service interface
(ACSI)
1) 2)
IEC 61850-7-3 - Part 7-3: Basic communication structure EN 61850-7-3 2003
for substation and feeder equipment -
Common data classes
1) 2)
IEC 61850-7-4 - Part 7-4: Basic communication structure EN 61850-7-4 2003
for substation and feeder equipment -
Compatible logical node classes and data
classes
1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
1) 2)
IEC 61850-9-1 - Part 9-1: Specific Communication Service EN 61850-9-1 2003
Mapping (SCSM) - Sampled values over
serial unidirectional multidrop point to
point link
1) 2)
IEC 61850-9-2 - Part 9-2: Specific Communication Service EN 61850-9-2 2004
Mapping (SCSM) - Sampled values over
ISO/IEC 8802-3
ISO/IEC 7498-1 1994 Information technology - Open systems EN ISO 7498-1 1995
interconnection - Basic reference model
Part 1: The basic model
ISO/IEC 7498-3 1997 Part 3: Naming and addressing - -

ISO/IEC 8072 1996 Information technology - Open systems - -
interconnection - Transport service
definition
ISO/IEC 8073 1997 Information technology - Open Systems - -
Interconnection - Protocol for providing
the connection-mode transport service

ISO/IEC 8326 1996 Information technology - Open systems - -
Interconnection - Session service
definition
ISO/IEC 8327-1 1997 Information technology - Open Systems - -
Interconnection - Connection-oriented
Session protocol: Protocol specification

ISO/IEC 8348 2002 Information technology - Open Systems - -
Interconnection - Network service
definition
ISO/IEC 8473-1 1998 Information technology - Protocol for - -
providing the connectionless-mode
network service: Protocol specification

ISO/IEC 8473-2 1996 Part 2: Provision of the underlying service - -
by an ISO/IEC 8802 subnetwork
ISO/IEC 8602 1995 Information technology - Protocol for - -
providing the OSI connectionless-mode
transport service
ISO/IEC 8649 1996 Information technology - Open systems - -
Interconnection - Service definition for the
Association Control Service Element
(ACSE)
ISO/IEC/TR2 1996 Information technology - Open systems - -
8650-1 Interconnection - Connection-oriented
protocol for the Association Control
Service Element: Protocol specification

- 5 - EN 61850-8-1:2004
Publication Year Title EN/HD Year
ISO/IEC 8802-2 1998 Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements
Part 2: Logical link control
ISO/IEC 8802-3 2001 Part 3: Carrier sense multiple access with - -
collision detection (CSMA/CD) access
method and physical layer specifications

ISO/IEC 8822 1994 Information technology - Open Systems - -
Interconnection - Presentation service
definition
ISO/IEC 8823-1 1994 Information technology - Open Systems - -
Interconnexion - Connection-oriented
presentation protocol: Protocol
specification
ISO/IEC 8824-1 2000 Information technology - Abstract Syntax - -
Notation One (ASN.1): Specification of
basic notation
A1 2000 - -
A2 2000 - -
ISO/IEC 8825-1 2000 Information technology - ASN.1 encoding - -
rules: Specification of Basic Encoding
Rules (BER), Canonical Encoding Rules
(CER) and Distinguished Encoding Rules
(DER)
ISO/IEC 8877 1992 Information technology - EN 28877 1993
Telecommunications and information
exchange between systems - Interface
connector and contact assignments for
ISDN Basic Access Interface located at
reference points S and T
ISO/IEC 9542 1988 Information processing systems - - -
Telecommunications and information
exchange between systems - End system
to intermediate system routing exchange
protocol for use in conjunction with the
Protocol for providing the connectionless-
mode network service (ISO 8473)

ISO/IEC 9548-1 1996 Information technology - Open Systems - -
Interconnection - Connectionless Session
protocol: Protocol specification

ISO/IEC 9576-1 1995 Information technology - Open Systems - -
Interconnection - Connectionless
Presentation protocol: Protocol
specification
Publication Year Title EN/HD Year
ISO/IEC 10035-1 1995 Information technology - Open Systems - -
Interconnection - Connectionless protocol
for the Association Control Service
Element: Protocol specification
A1 1998 - -
ISO/IEC ISP 1992 Information technology - International EN ISP 10608-1 1994
10608-1 Standardized Profile TAnnnn -
Connection-mode Transport Service over
Connectionless-mode Network Service
Part 1: General overview and
subnetwork-independent requirements

ISO/IEC ISP 1992 Part 2: TA51 profile including subnetwork- EN ISP 10608-2 1994
10608-2 dependent requirements for CSMA/CD
Local Area Networks (LANs)
ISO/IEC ISP 1995 Information technology - International EN ISP 11188-1 1996
11188-1 Standardized Profile - Common upper
layer requirements
Part 1: Basic connection oriented
requirements
ISO/IEC ISP 1996 Part 3: Minimal OSI upper layer facilities - -
11188-3
ISO 9506-1 2003 Industrial automation systems - - -
Manufacturing Message Specification
Part 1: Service definition
ISO 9506-2 2003 Part 2: Protocol specification - -

ISO/ISP 14226-1 1996 Industrial automation systems - - -
International Standardized Profile
AMM11: MMS General Applications Base
Profile
Part 1: Specification of ACSE,
Presentation and Session protocols for
the use by MMS
ISO/ISP 14226-2 1996 Part 2: Common MMS requirements - -

ISO/ISP 14226-3 1996 Part 3: Specific MMS requirements - -

IEEE C37.111 1999 IEEE Standard for Common Format for - -
Transient Data Exchange (COMTRADE)
for Power Systems
IEEE 754 1985 Standard for Binary Floating-Point - -
Arithmetic
IEEE 802.1Q 1998 IEEE Standards for Local and - -
Metropolitan Networks: Virtual Bridged
Local Area Networks
1)
RFC 542 - File Transfer Protocol for the ARPA - -
Network
- 7 - EN 61850-8-1:2004
Publication Year Title EN/HD Year
1)
RFC 768 - User Datagram Protocol - -

1)
RFC 791 - Internet Protocol - DARPA Internet - -
Program Protocol Specification

1)
RFC 792 - Internet Control Message Protocol - - -
DARPA Internet Program Protocol
Specification
1)
RFC 793 - Transmission Control Protocol - DARPA - -
Internet Program Protocol Specification

1)
RFC 826 - Ethernet Address Resolution Protocol: Or - -
converting network protocol addresses to
48.bit Ethernet address for Transmission
on Ethernet hardware
1)
RFC 894 - Standard for the Transmission of IP - -
datagrams over Ethernet Networks

1)
RFC 919 - Broadcasting Internet Datagrams - -

1)
RFC 922 - Broadcasting Internet Datagrams in the - -
presence of subnets
1)
RFC 950 - Internet Standard Subnetting Procedure - -

1)
RFC 959 - File Transfer Protocol (FTP) - -

1)
RFC 1006 - ISO transport services on top of TCP: - -
Version 3
1)
RFC 1112 - Host Extensions for IP Multicasting - -

1)
RFC 1122 - Requirements for Internet Hosts - - -
Communication Layers
1)
RFC 1123 - Requirements for Internet Hosts - - -
Application and Support
1)
RFC 2030 - Simple Network Time Protocol (SNTP) - -
Version 4 for IPv4, IPv6 and OSI

Undated reference.
Valid edition at date of issue.

INTERNATIONAL
IEC
STANDARD 61850-8-1
First edition
2004-05
Communication networks and systems
in substations –
Part 8-1:
Specific Communication Service Mapping (SCSM) –
Mappings to MMS (ISO 9506-1 and ISO 9506-2)
and to ISO/IEC 8802-3
© IEC 2004 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
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International Electrotechnical Commission
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For price, see current catalogue

– 2 – 61850-8-1 © IEC:2004(E)
CONTENTS
FOREWORD.8
INTRODUCTION.10
1 Scope.11
2 Normative references .11
3 Terms and definitions .15
4 Abbreviations .17
5 Overview .18
5.1 General .18
5.2 IEC 61850 server object .20
5.3 MMS communication profiles .20
5.4 Non-MMS communication profiles .20
5.5 MMS objects being used .20
6 Communication stack .21
6.1 Overview of the protocol usage .21
6.2 Client/server services and communication profiles .22
6.3 GSE management and GOOSE services communication profiles.25
6.4 GSSE Service and communication profile.27
6.5 Time sync.29
7 Objects of IEC 61850 .30
7.1 Server .30
7.2 Logical device (LD) .30
7.3 Logical node (LN).30
8 Mapping of IEC 61850-7-2 and IEC 61850-7-3 data attributes .33
8.1 Mapping of Attributes specified in IEC 61850-7-2 .33
8.2 Mapping of quality common data attribute type specified in IEC 61850-7-3.36
9 Server class model.37
9.1 Server mapping .37
9.2 Server class attributes.37
9.3 Server class service GetServerDirectory .38
10 Association model .40
10.1 Association relation to communication profiles .40
10.2 Two party association model for client/server communication profile .40
10.3 Two party association model for GSE management communication profile .41
10.4 Two party association model for time sync .41
10.5 Multicast association model.42
11 Logical device model .42
12 Logical node model .42
12.1 Logical node class.42
12.2 Logical node class attributes .42
12.3 Logical node class cervices.43
13 Data class model.44
13.1 Data class .44
13.2 Data class services .45

61850-8-1 © IEC:2004(E) – 3 –
14 Data set class model .46
14.1 Data set class .46
14.2 Data set attributes .46
14.3 Data set services.47
15 Substitution model.50
16 Setting group control class model.50
16.1 Setting group control class definition .50
16.2 Setting group control class services .50
17 Reporting and logging class model .51
17.1 Report model.51
17.2 Reporting services .53
17.3 Log model .56
18 Mapping of the generic substation event model (GSE).62
18.1 Generic object oriented substation event (GOOSE) .62
18.2 Generic Substation State Event (GSSE) .71
19 Transmission of sampled values class model .81
20 Control class model.81
20.1 Control service parameters.81
20.2 Mapping of control objects.81
20.3 Mapping of control services.83
20.4 Select.84
20.5 SelectwithValue.84
20.6 Cancel.85
20.7 Operate.85
20.8 AdditionalCauseDiagnosis in negative control service responses .87
20.9 CommandTermination .89
21 Time and time synchronization model.89
22 Naming conventions .89
23 File transfer.89
23.1 File transfer model .89
23.2 File services .91
24 Conformance.94
24.1 Notation .94
24.2 PICS .94
24.3 PICS Statement.107
25 Substation Configuration Language (SCL) .109
25.1 SCL file and SCL extensions .109
Annex A (normative) Application protocol specification for GOOSE and GSE
management.111
Annex B (informative) Multicast address selection .113
Annex C (normative) Overview of ISO/IEC 8802-3 frame structure for GSE
management and GOOSE.114
Annex D (informative) SCL conformance .117
Annex E (normative) Specialized CDCs for control service mapping .121
Annex F (informative) Time scales and epochs .128
Annex G (normative) Type extensions to ISO 9506-1 (2003) and ISO 9506-2 (2003) .131

– 4 – 61850-8-1 © IEC:2004(E)
Figure 1 – Overview of functionality and profiles .19
Figure 2 – OSI reference model and profiles .21
Figure 3 – Recommended ordered list of functional constraints.31
Figure 4 – Relationship of LCB attributes to IEC 61850-7-2 log definitions.56
Figure 5 – GetGoReference service primitives .63
Figure 6 – GetGOOSEElementNumber service primitives .66
Figure 7 – Transmission time for events .68
Figure 8 – SendGooseMessage message service primitives .68
Figure 9 – Client state machine for GOOSE service.69
Figure 10 – Server state machine for GOOSE service.69
Figure 11 – GetGsReference service primitives .74
Figure 12 – GetGSSEDataOffset service primitives.76
Figure 13 – GSSE service primitives.78
Figure 14 – Client state machine for GSSE service.78
Figure 15 – Server state machine for GSSE service.79
Figure 16 – Mapping of ACSI GetFile to MMS FileOpen, FileRead, FileClose .91
Figure 17 – Mapping of ACSI SetFile service .92
Figure C.1 – ISO/IEC 8802-3 frame format .114
Figure C.2 – Virtual LAN tag .115
Table 1 – MMS objects and services in use within this SCSM .21
Table 2 – Services requiring client/server Communication Profile .22
Table 3 – Service and protocols for client/server communication A-Profile .23
Table 4 – Service and protocols for client/server TCP/IP T-Profile .24
Table 5 – Service and protocols for client/server OSI T-Profile .25
Table 6 – Services requiring GSE Management and GOOSE communication profile .26
Table 7 – Service and protocols for GSE Management and GOOSE communication
A-Profile .26
Table 8 – GOOSE/GSE T-Profile .26
Table 9 – Service requiring GSSE communication profile.27
Table 10 – Service and protocols for GSSE communication A-Profile.27
Table 11 – GSSE management T-Profile.28
Table 12 – Time sync A-Profile .29
Table 13 – Time sync T-Profile .29
Table 14 – Mapping of ACSI data types .33
Table 15 – Encoding of IEC 61850-7-2 TimeQuality .36
Table 16 – Encoding of IEC 61850-7-3 quality .37
Table 17 – ServiceError mapping for GetServerDirectory for non-files .39
Table 18 – ServiceErrors mapping of ACSI GetServerDirectory for files.39
Table 19 – Association model versus communication profiles .40
Table 20 – Associate service error mappings.41
Table 21 – Release service error mappings .41
Table 22 – GetNamedList classes for GetLogicalNodeDirectory service.43

61850-8-1 © IEC:2004(E) – 5 –
Table 23 – MMS AccessResult mapping to ASCI ServiceError .44
Table 24 – Mapping of GetDataValues service parameters .45
Table 25 – Mapping of SetDataValues service parameters.45
Table 26 – Mapping of GetDataDirectory service parameters.46
Table 27 – ServiceError Mappings for GetDataDirectory service .46
Table 28 – Mapping of GetDataSetValues service parameters .47
Table 29 – Mapping of SetDataSetValues service parameters .47
Table 30 – Mapping of CreateDataSet service parameters.48
Table 31 – ServiceError mapping for CreateDataSet.48
Table 32 – Mapping of DeleteDataSet service parameters .48
Table 33 – ServiceError mapping for DeleteDataSet .49
Table 34 – Mapping of GetDataSetDirectory service parameters.49
Table 35 – ServiceError mapping for GetDataSetDirectory.49
Table 36 – Mapping of ACSI ServiceError for SelectActiveSG.50
Table 37 – Mapping of BRCB to MMS type definition .51
Table 38 – Mapping of OptFlds within Bitstring .52
Table 39 – Mapping of URCB to MMS type definition .52
Table 40 – Order of AccessResults for variableListName report.53
Table 41 – Definition of an MMS log control block.57
Table 42 – Mapping of values for LogEna .57
Table 43 – Mapping of ACSI LogEntries.58
Table 44 – General mappings of ACSI log model services .60
Table 45 – Mapping of QueryLogByTime request parameters .61
Table 46 – Mapping of response parameters .61
Table 47 – ServiceError mappings for Log services .61
Table 48 – Mapping of QueryLogAfter request parameters.61
Table 49 – Log conformance requirements .62
Table 50 – MMS TypeDescription definition for GCB MMS structure .62
Table 51 – DstAddress structure.63
Table 52 – Mapping of GetGoReference service .64
Table 53 – GetGoReference .64
Table 54 – Mapping of GetGOOSEElementNumber service .66
Table 55 – GetGOOSEElementNumber.67
Table 56 – GOOSE service parameter mapping.70
Table 57 – MMS TypeDescription Definition for GSSE control block MMS structure .71
Table 58 – Mapping of LSentData .72
Table 59 – Definition of integer values of PhsID.73
Table 60 – Definition of double-bit GSSE values .73
Table 61 – Mapping of GetGsReference service .74
Table 62 – GetGsReference.75
Table 63 – Mapping of GetGOOSEElementNumber service .76
Table 64 – GetGSSEDataOffset.77
Table 65 – GSSE service.79

– 6 – 61850-8-1 © IEC:2004(E)
Table 66 – Mapping of test values to bit-pair values.80
Table 67 – Control service parameters.81
Table 68 – Mapping of IEC 61850-7-2 control model to MMS control components.82
Table 69 – Mapping of control services .83
Table 70 – Select service parameter mapping.84
Table 71 – SelectwithValue service parameter mapping.84
Table 72 – Select, Oper and Cancel AccessResult specification .85
Table 73 – Cancel service parameter mapping.85
Table 74 – Operate service parameter mapping.86
Table 75 – Control with TimeActivation service parameter mapping .86
Table 76 – Definition of LastApplError variable structure.87
Table 77 – Mapping of ACSI AddCause values .88
Table 78 – Mapping of ACSI file class to MMS file object.89
Table 79 – Reserved file suffixes .90
Table 80 – Mapping of ACSI GetFile service parameters .92
Table 81 – Mapping of ACSI SetFile parameters.93
Table 82 – Mapping of ACSI DeleteFile service .93
Table 83 – Mapping of ACSI GetFileAttributeValues parameters.94
Table 84 – Mapping of ACSI ListOfDirectoryEntry.94
Table 85 – PICS for A-Profile support .95
Table 86 – PICS for T-Profile support .95
Table 87 – MMS InitiateRequest general parameters .96
Table 88 – MMS InitiateResponse general parameters .96
Table 89 – MMS service supported conformance table .97
Table 90 – MMS Parameter CBB .100
Table 91 – GetNameList conformance statement .100
Table 92 – AlternateAccessSelection conformance statement.101
Table 93 – VariableAccessSpecification conformance statement .101
Table 94 – VariableSpecification conformance statement.102
Table 95 – Read conformance statement .102
Table 96 – Write conformance statement .102
Table 97 – InformationReport conformance statement .103
Table 98 – GetVariableAccessAttributes conformance statement.103
Table 99 – DefineNamedVariableList conformance statement.103
Table 100 –GetNamedVariableListAttributes conformance statement.104
Table 101 – DeleteNamedVariableList conformance statement .104
Table 102 – ReadJournal conformance statement.105
Table 103 – JournalEntry conformance statement.105
Table 104 – InitializeJournal conformance statement .106
Table 105 – FileDirectory conformance statement.106
Table 106 – FileOpen conformance statement .106
Table 107 – FileRead conformance statement .107
Table 108 – FileClose conformance statement.107

61850-8-1 © IEC:2004(E) – 7 –
Table 109 – GOOSE conformance statement.108
Table 110 – GSSE conformance statement.108
Table 111 – Allowed P-Type definitions for client/server addressing .109
Table 112 – Definitions for GSE SCL .110
Table B.1 – Recommended multicast addressing example .113
Table C.1 – Default virtual LAN IDs and priorities .115
Table C.2 – Assigned Ethertype values.116
Table D.1 – SCL conformance degrees.117
Table D.2 – Supported ACSI services for SCL.2 and SCL.3 .117
Table D.3 – Additional MMS services for SCL.2 and SCL.3.118
Table D.4 – Definition of SCL control block .118
Table E.1 – Name space attributes .121
Table E.2 – Extended common data class controllable single point.122
Table E.3 – Extended common data class controllable double point.122
Table E.4 – Extended common data class controllable integer status.123
Table E.5 – Extended common data class binary controlled step position information .123
Table E.6 – Extended common data class integer controlled step position information.124
Table E.7 – Extended common data class controllable analogue set point information.124
Table E.8 – SBOw .125
Table E.9 – Oper .125
Table E.10 – Cancel .126
Table E.11 – ctlVal .126
Table E.12 – Conditions for attribute inclusion .126
Table E.13 – Semantics of data attributes.127
Table F.1 – Relationships between timescales.129
Table F.2 – Examples of timescale correspondence.130

– 8 – 61850-8-1 © IEC:2004(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS –
Part 8-1: Specific Communication Service Mapping (SCSM) –
Mappings to MMS (ISO 9506-1 and ISO 9506-2)
and to ISO/IEC 8802-3
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal d
...