IEC TS 61850-80-1:2008

IEC/TS 61850-80-1
Edition 1.0 2008-12
TECHNICAL
SPECIFICATION
Communication networks and systems for power utility automation –
Part 80-1: Guideline to exchanging information from a CDC-based data model
using IEC 60870-5-101 or IEC 60870-5-104

IEC/TS 61850-80-1:2008(E)
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IEC/TS 61850-80-1
Edition 1.0 2008-12
TECHNICAL
SPECIFICATION
Communication networks and systems for power utility automation –
Part 80-1: Guideline to exchanging information from a CDC-based data model
using IEC 60870-5-101 or IEC 60870-5-104

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XF
ICS 33.200 ISBN 978-2-88910-579-3
– 2 – TS 61850-80-1 © IEC:2008(E)

CONTENTS
FOREWORD.6

1 Scope and object.8

2 Normative references .8

3 Abbreviated terms .9

4 The mapping architecture .10

5 Conceptual architectures and associated use cases .11

5.1 Conceptual architecture of a gateway device.11

5.2 Conceptual architecture of an IED directly connected to a WAN (optional) .15
6 Mapping of a device-oriented information model to IEC 60870-5-104 or
IEC 60870-5-101 .16
6.1 General .16
6.2 Mapping of a device-oriented information model reference .16
6.3 Logical device class mapping .17
6.4 Logical node class mapping .17
7 Mapping of the common data classes (CDC) .17
7.1 List of CDC, type Identifications and corresponding mappings for IEC 61850 .17
7.2 CDC single point status (SPS).20
7.3 CDC double point status (DPS) .20
7.4 CDC integer status (INS).21
7.5 CDC protection activated information (ACT) .23
7.6 CDC directional protection activation information (ACD) .25
7.7 CDC Security violation counting (SEC) .27
7.8 CDC binary counter reading (BCR).28
7.9 CDC measured value (MV) .29
7.10 CDC complex measured value (CMV).30
7.11 CDC Phase to ground related measured values of a three-phase system
(WYE) .32
7.12 CDC phase to phase measured values of a three phase system (DEL).32
7.13 CDC sequence (SEQ) .33
7.14 CDC harmonic value (HMV).34
7.15 CDC harmonic value for WYE (HWYE) .35
7.16 CDC harmonic value for DEL (HDEL) .35
7.17 CDC controllable single point (SPC) .36

7.18 CDC controllable double point (DPC) .38
7.19 CDC controllable integer status (INC).40
7.20 CDC binary controlled step position information (BSC) .42
7.21 CDC integer-controlled step position information (ISC).44
7.22 CDC controllable analogue set point information (APC) .46
7.23 CDC Single point setting (SPG).47
7.24 CDC integer status setting (ING) .48
7.25 CDC analogue settings (ASG) .48
8 Mapping of services.48
8.1 List of service models and corresponding mappings .48
8.2 Server class mapping .50
8.3 Association class mapping .50
8.4 Logical node class mapping .51
8.5 Data class mapping.52

TS 61850-80-1 © IEC:2008(E) – 3 –

8.6 Setting group class mapping .53

8.7 Report control block class mapping .54

8.8 Control class mapping .54

9 Protocol stack selections for IEC 60870-5-101 and IEC 60870-5-104 .76

9.1 General .76

9.2 Structure of application data.76

9.3 IEC 60870-5 interoperability .77

Annex A (informative) Use of SCL (substation configuration language) to include

IEC 60870-5-101 or IEC 60870-5-104 information.104

Figure 1 – Conceptual architecture of a gateway device .11
Figure 2 – Use case a) for a gateway device.12
Figure 3 – Use case b) for a gateway device.13
Figure 4 – Use case c) for a gateway device.14
Figure 5 – Conceptual architecture of an IED.15
Figure 6 – Mapping architecture (conceptual) .17
Figure 7 – Direct control with normal security with status update – positive case
applied to gateway device.55
Figure 8 – Direct control with normal security with status update – positive case
applied to IED .56
Figure 9 – Direct control with normal security in general – negative case a) applied to
gateway device .56
Figure 10 – Direct control with normal security in general – negative case a) applied to IED.57
Figure 11 – Direct control with normal security in general – negative case b) applied to
gateway device .57
Figure 12 – Direct control with normal security in general – negative case b) applied to IED.58
Figure 13 – Direct control with normal security with status update – negative case c)
applied to gateway device.58
Figure 14 – Direct control with normal security with status update – negative case c)
applied to IED .59
Figure 15 – Direct control with normal security without status update – positive case
applied to gateway device.59
Figure 16 – Direct control with normal security without status update – positive case
applied to IED .60

Figure 17 – Direct control with enhanced security – positive case applied to gateway
device.62
Figure 18 – Direct control with enhanced security – positive case applied to IED .63
Figure 19 – Direct control with enhanced security – negative case c) applied to
gateway device .64
Figure 20 – Direct control with enhanced security – negative case c) applied to IED.64
Figure 21 – Direct control with enhanced security – negative case d) applied to
gateway device .65
Figure 22 – Direct control with enhanced security – negative case d) applied to IED.65
Figure 23 – SBOw control – positive case applied to gateway device.67
Figure 24 – SBOw control – positive case applied to IED .67
Figure 25 – SBOw control – negative case a) applied to gateway device .68
Figure 26 – SBOw control – negative case a) applied to IED.68

– 4 – TS 61850-80-1 © IEC:2008(E)

Figure 27 – SBOw control – negative case b) applied to gateway device .69

Figure 28 – SBOw control – negative case b) applied to IED.69

Figure 29 – SBOw control – negative case c) applied to gateway device.70

Figure 30 – SBOw control – negative case c) applied to IED.70

Figure 31 – SBO with enhanced security – positive case applied to gateway device .71

Figure 32 – SBO with enhanced security – positive case applied to IED .72

Figure 33 – SBO with enhanced security – negative case a) applied to gateway device .72

Figure 34 – SBO with enhanced security – negative case a) applied to IED .73

Figure 35 – SBO with enhanced security – negative case b) applied to gateway device .73
Figure 36 – SBO with enhanced security – negative case b) applied to IED .74

Table 1 – Mapping structure CDC onto ASDU type .18
Table 2 – CDC: Single point status (SPS) .20
Table 3 – CDC: Single point status (SPS) mapping.20
Table 4 – CDC: Double point status (DPS).20
Table 5 – CDC: Double point status (DPS) mapping .21
Table 6 – CDC: Integer status (INS).21
Table 7 – CDC: Integer status (INS) mapping .22
Table 8 – CDC: Protection activated information (ACT).23
Table 9 – CDC: Protection activated information (ACT) mapping .24
Table 10 – CDC: Protection activated information (ACD) .25
Table 11 – CDC: Directional protection activated information (ACD) mapping .26
Table 12 – CDC: Security violation counting (SEC) .27
Table 13 – CDC: Security violation counting (SEC) mapping.27
Table 14 – CDC: Binary counter reading (BCR) .28
Table 15 – CDC: Binary counter reading (BCR) mapping .28
Table 16 – CDC: Measured value (MV) .29
Table 17 – CDC: Measured value (MV) mapping.29
Table 18 – CDC: Complex measured value (CMV) .30
Table 19 – CDC: Complex measured value (CMV) mapping.31

Table 20 – CDC: Phase to ground related measured values of a three-phase system
(WYE).32
Table 21 – CDC: Phase to phase measured values of a three phase system (DEL) .33
Table 22 – CDC: Sequence (SEQ) .33
Table 23 – CDC: Harmonic value (HMV) .34
Table 24 – CDC: Harmonic value (HMV) mapping.34
Table 25 – CDC: Harmonic value for WYE (HWYE).35
Table 26 – CDC: Harmonic value for DEL (HDEL).35
Table 27 – CDC: Controllable single point (SPC) .36
Table 28 – CDC: Controllable single point (SPC) mapping .37
Table 29 – CDC: Controllable double point (DPC).38
Table 30 – CDC: Controllable double point (DPC) mapping.39
Table 31 – CDC: Controllable integer status (INC) .40

TS 61850-80-1 © IEC:2008(E) – 5 –

Table 32 – CDC: Controllable integer status (INC) mapping.41

Table 33 – CDC: Binary controlled step position information (BSC).42

Table 34 – CDC: Binary controlled step position information (BSC) mapping of data

attributes of the functional constraint ST .42

Table 35 – CDC: Binary controlled step position information (BSC) mapping of data

attributes of the functional constraint CO .43

Table 36 – CDC: Integer-controlled step position information (ISC).44

Table 37 – CDC: Integer-controlled step position information (ISC) mapping .45

Table 38 – CDC: Controllable analogue set point information (APC) .46

Table 39 – CDC: Controllable analogue set point information (APC) mapping of data
attributes of the functional constraint MX .46
Table 40 – CDC: Controllable analogue set point information (APC) mapping of data
attributes of the functional constraint SP.47
Table 41 – CDC: Single point setting (SPG).47
Table 42 – CDC: Integer status setting (ING) .48
Table 43 – CDC: Analogue settings (ASG).48
Table 44 – Services requiring client/server communication profile.49
Table 45 – Server services mapping .50
Table 46 – Association services mapping.50
Table 47 – Logical nodes services mapping .51
Table 48 – Data services mapping .52
Table 49 – Setting group services mapping.53
Table 50 – Report control block services mapping .54
Table 51 – Direct control with normal security services mapping.61
Table 52 – Direct control with enhanced security services mapping .66
Table 53 – SBO control with enhanced security services mapping .74
Table A.1 – Extension of the “P” element types to hold IEC 60870-5-101 information . 133
Table A.2 – Extension of the “P” element types to hold IEC 60870-5-104 information . 135
Table A.3 – Extension of the “P” element types using redundancy groups. 136

– 6 – TS 61850-80-1 © IEC:2008(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 80-1: Guideline to exchanging information from a CDC-

based data model using IEC 60870-5-101 or IEC 60870-5-104

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 61850-80-1, which is a technical specification, has been prepared by IEC technical
committee 57: Power systems management and associated information exchange.

TS 61850-80-1 © IEC:2008(E) – 7 –

The text of this technical specification is based on the following documents:

Enquiry draft Report on voting

57/916/DTS 57/969/RVC
Full information on the voting for the approval of this technical specification 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 bold characters in some tables are used to highlight the most essential terms or functions
inside the figures to improve readability. Shading of parts of the figures is used for the same
purpose.
A list of all parts of the IEC 61850 series, published under the general title Communication
networks and systems for power utility automation, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual edition of this document may be issued at a later date.

– 8 – TS 61850-80-1 © IEC:2008(E)

COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 80-1: Guideline to exchanging information from a CDC-

based data model using IEC 60870-5-101 or IEC 60870-5-104

1 Scope and object
This technical specification gives a guideline on how to exchange information from a CDC-
based data model (for example IEC 61850) using IEC 60870-5-101 or IEC 60870-5-104
between substation(s) and control center(s). Mostly guidelines for functions needed in a
substation gateway device are given.
The goal of this technical specification is to describe standardized mapping of device-oriented
data models (for example IEC 61850) with already defined attributes of CDC's and services
(for example IEC 61850-7) onto the already defined ASDU's and services of IEC 60870-5-104
or IEC 60870-5-101. It is not the goal of this technical specification to add any extensions to
published standards (for example IEC 61850 or IEC 60870-5-104 or IEC 60870-5-101).
After an introduction giving a basic description of the mapping, the mapping of the information
model with associated data classes, and the mapping of services are described. Clause 9
shows how the mapped data and services according to the IEC 60870-5-104 and
IEC 60870-5-101 protocol are marked (selected) in the interoperability sheet.
The scope of this technical specification is to achieve real-time exchange of process
information required for operational purposes between a substation using a CDC-based data
model (for example IEC 61850) and (a) control centre(s) using a communication link over a
wide area network (WAN) compliant to the definitions of IEC 60870-5-101 or IEC 60870-5-
104. The amount of real-time information provided by the substation-gateway device can vary
dependent on the operational needs. Actors could be regional and nationwide control centers
that receive real-time information in order to monitor and control geographically widespread
processes. The described mapping can be used for several fields of application of power
utilities, such as substations, hydro and wind power plants, and decentralized energy
resources DER. The mapping is based on the definitions of the standard series IEC 61850
Edition 1.0 and IEC 60870-5-104:2006/IEC 60870-5-101:2003. The scope of the mapped
IEC 60870-5-104 and IEC 60870-5-101 subset is given in Clause 9.
This technical specification focuses mainly on defining rules and functions of a gateway

device as a part of the substation. However, the rules and functions are also valid when an
IED may optionally be connected directly to a WAN compliant with IEC 60870-5-101 or
IEC 60870-5-104 and therefore, the mapping has to be done inside the IED.
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 60870-5-3, Telecontrol equipment and systems – Part 5: Transmission protocols –
Section 3: General structure of application data
IEC 60870-5-4:1993, Telecontrol equipment and systems – Part 5: Transmission protocols –
Section 4: Definition and coding of application information elements

TS 61850-80-1 © IEC:2008(E) – 9 –

IEC 60870-5-5:1995, Telecontrol equipment and systems – Part 5: Transmission protocols –

Section 5: Basic application functions

IEC 60870-5-101:2003, Telecontrol equipment and systems – Part 5-101: Transmission

protocols – Companion standard for basic telecontrol tasks

IEC 60870-5-104:2006, Telecontrol equipment and systems – Part 5-104: Transmission

protocols – Network access for IEC 60870-5-101 using standard transport profiles

IEC 61850 (all parts), Communication networks and systems in substations

IEC 61850-6, Communication networks and systems in substations – Part 6: Configuration
description language for communication in electrical substations related to IEDs
IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic
communication structure for substation and feeder equipment – Abstract communication
service interface (ACSI)
IEC 61850-7-3, Communication networks and systems in substations – Part 7-3: Basic
communication structure for substation and feeder equipment – Common data classes
IEC 61850-8-1, Communication networks and systems in substations – Part 8-1: Specific
Communications Service Mapping (SCSM) – Mapping to MMS (ISO 9506-1 and ISO 9506-2)
and to ISO/IEC 8802-3
Document 57/963/INF: IEC 61850 – Technical issues (see www.tissue.iec61850.com)
IEC 61400-25-2, Wind turbines – Part 25-2: Communications for monitoring and control of
wind power plants – Information models
IEEE 754:2008, IEEE Standard for Binary Floating-Point Arithmetic
RFC 2200, Internet Official Protocol Standards, Request for Comments 2200 (June 1997)
3 Abbreviated terms
For the purposes of this document, the following abbreviated terms apply.
ACSI Abstract communication service interface (defined for example in IEC 61850-7-2)

ASDU Application service data unit
CASDU Common address of ASDU
CDC Common data class (defined for example in IEC 61850-7-3)
CI Counter interrogation
COT Cause of transmission
GI General interrogation
GOOSE Generic object oriented substation event
HMI         Human machine interface
IED Intelligent electronic device
IOA Information object address
LD Logical device
– 10 – TS 61850-80-1 © IEC:2008(E)

LN Logical node
PI Process image
P/N Positive/negative
QOI Qualifier of interrogation

QDS Quality descriptor
RFC Request for comments
S/E Select/execute
SCADA Supervisory control and data acquisition
SCSM Specific communication service mapping (defined for example in IEC 61850-8-1)
SCL Substation configuration language (defined for example in IEC 61850-6)
TCP Transmission control protocol
TI Type Identification
TISSUE Technical issue as part of the maintenance process of IEC 61850
WAN Wide area network
XML Extensible mark-up language
4 The mapping architecture
The mapping architecture consists of 5 parts:
1) conceptual architecture of a gateway device and associated use cases;
2) conceptual architecture of an IED directly connected to a WAN (optional);
3) mapping of the information model;
4) mapping of the data (which is in fact part of the information model);
5) mapping of the services.
TS 61850-80-1 © IEC:2008(E) – 11 –

5 Conceptual architectures and associated use cases

5.1 Conceptual architecture of a gateway device

IEC  2255/08
Figure 1 – Conceptual architecture of a gateway device
Figure 1 describes the conceptual architecture of a gateway device within a substation. The
gateway device is decoupling the IEC 61850 station bus from the IEC 60870-5-101 or
IEC 60870-5-104 WAN via a process image (PI). The advantage of this approach is that only
services for control model interaction need to be mapped.
The PI is organized according the data model of IEC 61850 (LDs, LNs, CDCs).

The IEC 61850 client/GOOSE subscriber is used to update the PI with process data made
available by the IEDs.
The IEC 61850 server/proxy is used to:
• make process data coming from remote devices available for IEDs inside the substation;
• retrieve the data model for:
– IEC 61850 clients inside the substation (for example HMI);
– IEC 61850 clients outside the substation (for example future control centers);
– existing control centers using IEC 60870-5-101 or IEC 60870-5-104 for WAN
communication by using additional services (for example SCL extensions or web
services).
– 12 – TS 61850-80-1 © IEC:2008(E)

The IEC 60870-5-101 or IEC 60870-5-104 controlled and controlling functionality makes use
of the attributes of CDCs in a defined way to build up ASDUs to communicate with control

centers or “devices on the WAN network“ using WAN communication based on

IEC 60870-5-101 or IEC 60870-5-104 (including redundant connections).

The IEC 60870-5-101 or IEC 60870-5-104 controlling functionality inside the gateway device

is used to connect “devices on the WAN network“ with IEC 60870-5-101 or IEC 60870-5-104

controlled functionality to the substation.

The gateway device can optionally act as a “mediator“ between the substation and all

“devices on the WAN network“. When IEC 60870-5-101 or IEC 60870-5-104 “dual mode

functionality“ is used, the same ASDUs are used in the monitor and the control direction on
the WAN.
5.1.1 Use case a) for a gateway device

IEC  2256/08
Figure 2 – Use case a) for a gateway device
Figure 2 describes use case a) using a subset of functions of the conceptual architecture.
The IEC 61850 client/GOOSE subscriber is used to update the PI with process data made
available by the IEDs.
The IEC 60870-5-101 or IEC 60870-5-104 controlled functionality makes use of the attributes
of CDCs in a defined way to build up ASDUs to communicate with control centers using WAN
communication based on IEC 60870-5-101 or IEC 60870-5-104 (including redundant
connections).
TS 61850-80-1 © IEC:2008(E) – 13 –

5.1.2 Use case b) for a gateway device

IEC  2257/08
Figure 3 – Use case b) for a gateway device
Figure 3 describes use case b) using an extended subset of functions of the conceptual
architecture.
The IEC 61850 client/GOOSE subscriber is used to update the PI with process data made
available by the IEDs.
The IEC 61850 proxy is used to retrieve the data model for IEC 61850 clients inside the
substation (for example HMI).
The IEC 60870-5-101 or IEC 60870-5-104 controlled functionality makes use of the attributes
of CDCs in a defined way to build up ASDUs to communicate with control centers using WAN
communication based on IEC 60870-5-101 or IEC 60870-5-104 (including redundant
connections).
– 14 – TS 61850-80-1 © IEC:2008(E)

5.1.3 Use case c) for a gateway device

IEC  2258/08
Figure 4 – Use case c) for a gateway device
Figure 4 describes use case c) using nearly all functions of the conceptual architecture.
The
IEC 61850 client/GOOSE subscriber is used to update the PI with process data made
available by the IEDs.
The IEC 61850 server is used to:
• make process data coming from remote devices available for IEDs inside the substation;
• retrieve the data model for:
– IEC 61850 clients inside substation (for example HMI);

– existing control centers using IEC 60870-5-101 or IEC 60870-5-104 for WAN
communication by using additional services (for example SCL extensions or web
services).
The IEC 60870-5-101 or IEC 60870-5-104 controlled and controlling functionality makes use
of the attributes of CDCs in a defined way to build up ASDUs to communicate with control
centers or “devices on the WAN network“ using WAN communication based on
IEC 60870-5-101 or IEC 60870-5-104 (including redundant connections).
The IEC 60870-5-101 or IEC 60870-5-104 controlling functionality inside the gateway device
is used to connect “devices on the WAN network“ with IEC 60870-5-101 or IEC 60870-5-104
controlled functionality to the substation.
The gateway device can optionally act as a “mediator“ between the substation and all
“devices on the WAN network“. When IEC 60870-5-101 or IEC 60870-5-104 “dual mode
functionality“ is used, the same ASDUs are used in the monitor and the control direction on
the WAN.
TS 61850-80-1 © IEC:2008(E) – 15 –

5.2 Conceptual architecture of an IED directly connected to a WAN (optional)

IEC  2259/08
Figure 5 – Conceptual architecture of an IED
Figure 5 is showing the conceptial architecture of an IED which optionally maybe connected
directly to a WAN complient to IEC 60870-5-104 or IEC 60870-5-101. However, the rules and
functions defined for a gateway device as a part of a substation are also valid for the mapping
inside an IED.
The IED is decoupling the process information from the IEC 60870-5-101 or IEC 60870-5-104
WAN via a process image (PI). The advantage of this approach is that only services for
control model interaction need to be mapped.
The PI is organized according the data model of IEC 61850 (LDs, LNs, CDCs).
The IEC 61850 server/proxy is used to:

• make process data coming from remote devices available for the process connected to the
IED;
• retrieve the data model for:
– IEC 61850 clients outside the substation (for example future control centers);
– existing control centers using IEC 60870-5-101 or IEC 60870-5-104 for WAN
communication by using additional services (for example SCL extensions or web
services).
The IEC 60870-5-101 or IEC 60870-5-104 controlled and controlling functionality makes use
of the attributes of CDCs in a defined way to build up ASDUs to communicate with control
centers or “devices on the WAN network“ using WAN communication based on
IEC 60870-5-101 or IEC 60870-5-104.

– 16 – TS 61850-80-1 © IEC:2008(E)

The IEC 60870-5-101 or IEC 60870-5-104 controlling functionality inside the IED is used to

connect “devices on the WAN network“ with IEC 60870-5-101 or IEC 60870-5-104 controlled

functionality to the IED.
The IED can optionally act as a “mediator“ between the IED and all “devices on the WAN

network“. When IEC 60870-5-101 or IEC 60870-5-104 “dual mode functionality“ is used, the

same ASDUs are used in the monitor and the control direction on the WAN.

6 Mapping of a device-oriented information model to IEC 60870-5-104 or

IEC 60870-5-101
6.1 General
The defined mapping for a device-oriented information model is based on using existing
functionalities in IEC 60870-5-104 or IEC 60870-5-101 by using the
– common address of ASDU (CASDU), and the
– information object address (IOA)
to accommodate the device model using LD (logical device) and LN (logical node) and
transfer of real-time information (data) using standardized ASDUs. The same is applicable for
the services and the basic application functions in IEC 60870-5-104 or IEC 60870-5-101.
6.2 Mapping of a device-oriented information model reference
The device-oriented information model (for example IEC 61850) shall be mapped to a
hierarchical structure. The conceptual mapping is depicted in Figure 6. The device-oriented
information model (for example IEC 61850) is intended to be preserved when mapped to
IEC 60870-5-104 or IEC 60870-5-101. This especially means that
– the server/proxy implements the hierarchical device-oriented information model of, for
example, IEC 61850 that can be retrieved by the services according to Clause 8;
– the client implements the device-oriented information model by configuration. That can be
done in different ways:
• by using the SCL file, specifying the implemented information model, mapping and
addressing details according to the rules in IEC 61850-6;
• by other configuration methods.
– the master/client station ("controlling station") accesses the hierarchical device-oriented
information model of, for example, IEC 61850 through the services provided by
IEC 60870-5-104 or IEC 60870-5-101 to exchange real-time data.

TS 61850-80-1 © IEC:2008(E) – 17 –

Data model in
substation gateway device:
Feeder5
Master/
Information model (LD „Feeder5“ and its LNs
XSWI
Client
and data) through configuration
XCBR
Loc
pos
stval
q
Object references and real-time

t
values of:
Feeder5/XCBR.pos.stval d
Feeder5/XCBR.pos.q dU
Feeder5/XCBR.pos.t
cdcNs
map to an ASDU of type <31> with an
Information exchange
unique address (CASDU and IOA)
according to SCSM as
described in this TS
local local
IEC 60870-5-104 protocol
104 interface 104 interface
ASDU <31>
CASDU
IOA
Double point inf.
QDS
command ASDUs
…
CP56Time2a
IEC  2260/08
Figure 6 – Mapping architecture (conceptual)
6.3 Logical device class mapping
The logical device reference shall map to the common address of ASDU (CASDU).
NOTE The CASDU may be structured or unstructured. For example, the CASDU may identify the station ID and
the logical device instance ID. It is recommended to make an addressing scheme in order to have unique address
for the specific station. For example, for small stations, one CASDU can be assigned for a station, all LD will then
have the same CASDU. For a large station several CASDU can be used to i
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