IEC 60870-5-101:2003/AMD1:2015

IEC 60870-5-101 ®
Edition 2.0 2015-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Telecontrol equipment and systems –
Part 5-101: Transmission protocols – Companion standard for basic telecontrol
tasks
Matériels et systèmes de téléconduite –
Partie 5-101: Protocoles de transmission – Norme d'accompagnement pour les
tâches élémentaires de téléconduite

IEC 60870-5-101:2003-02/AMD1:2015-11(en-fr)

All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 60 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 60870-5-101 ®
Edition 2.0 2015-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Telecontrol equipment and systems –

Part 5-101: Transmission protocols – Companion standard for basic telecontrol

tasks
Matériels et systèmes de téléconduite –

Partie 5-101: Protocoles de transmission – Norme d'accompagnement pour les

tâches élémentaires de téléconduite

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-2996-5

– 2 – IEC 60870-5-101:2003/AMD1:2015
 IEC 2015
FOREWORD
This amendment has been prepared by IEC technical committee 57: Power systems
management and associated information exchange.
The text of this amendment is based on the following documents:
CDV Report on voting
57/1530/CDV 57/1592/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
 IEC 2015
4.3 Link layer
Replace the first sentence of the first paragraph of 4.3 with the following new text:
IEC 60870-5-2 defines a set of link transmission procedures using a control field and the
optional address field.
th
Replace the last sentence of the 5 paragraph of 4.3 with the following new text:
In addition a companion standard specifies the time-out interval (T ) of the primary station
o
(see A.1 of IEC 60870-5-2 for details of link timing).
Figure 5 – State transition diagram for unbalanced transmission primary to secondary
Replace (twice) in Figure 5 the phrase "Rx[error]/ and Trp not time out"
by the following new phrase:
"Rx[error and Trp not time out]"
Replace (twice) in Figure 5 the phrase "Rx[error]/Trp not time out/"
by the following new phrase:
"Rx[error and Trp not time out]"
Add, after Figure 6, the following new subclause heading:
6.2.1.2 Balanced transmission procedures
Replace the first sentence of the first paragraph of 6.2.1.2 by the following new text:
The request to the standardized function codes in primary direction (0 up to 3 and 9) have to
receive positive or negative responses.
7.1 Selections from IEC 60870-5-3: General structure of application data
rd
Add at the end of the 3 paragraph of 7.1, the following new text:
ASDU's containing no INFORMATION OBJECT are permitted too.
Additionally: In some cases the ASDU consist of the DATA UNIT IDENTIFIER only.
th
Replace the second sentence of the 6 paragraph of 7.1 by the following new text:
The COMMON ADDRESS is the station address, which permits the addressing of the whole
station or just a particular station sector.
7.2 Selections from IEC 60870-5-4: Definitions and coding of application information
elements
Add, at the end of 7.2, the following new text:
Mode 1 (least significant octet first), as defined in 4.10 of IEC 60870-5-4, is used exclusively
in this companion standard.
– 4 – IEC 60870-5-101:2003/AMD1:2015
 IEC 2015
Table 9 – Semantics of TYPE IDENTIFICATION – Process information in control
direction
Replace the existing Note below Table 9 with the following new Note:
NOTE ASDUs marked (CON) in control direction are confirmed application services and have to be mirrored in
monitor direction with different causes of transmission. These mirrored ASDUs are used for positive/negative
acknowledgements (verifications). The causes of transmission are defined in 7.2.3.
Table 13 – Semantics of TYPE IDENTIFICATION – File transfer
Replace the existing Note below Table with the following new Note:
NOTE ASDUs marked (CON) in control direction are confirmed application services and have to be mirrored in
monitor direction with different causes of transmission. These mirrored ASDUs are used for positive/negative
acknowledgements (verifications). The causes of transmission are defined in 7.2.3.
7.2.3 Cause of transmission:
Replace the first sentence of the first paragraph of 7.2.3 with the following new text:
Octet 3 (and optionally Octet 4) of the DATA UNIT IDENTIFIER of the ASDU defines the
CAUSE OF TRANSMISSION field which is specified in the following.
7.2.3 Cause of transmission
Replace the subheading after Figure 14 with the following new numbered subheading:
7.2.3.1 Definition of the semantics of values of the CAUSE OF TRANSMISSION field
th
Replace the 6 paragraph of 7.2.3.1 with the following new text:
ASDUs marked (CON) in control direction are confirmed application services and shall be
mirrored in monitor direction with different CAUSES OF TRANSMISSION (see Tables 9, 11
and 12). The originator address directs these mirrored ASDUs and interrogated ASDUs in
monitor direction (e.g. interrogated by station interrogation) to the source that activated the
procedure.
th
Replace the 13 paragraph of 7.2.3.1 with the following new text:
ASDUs in the control direction and ASDUs defined for monitor direction used in reverse mode
(see clause 8. Interoperability) with not supported values in the data unit identifier (except the
variable structure qualifier) and the information object address are mirrored by the controlled
station with bit “P/N:= <1> negative confirm” and the following causes of transmission:
7.2.4 COMMON ADDRESS OF ASDUs:
Replace the first sentence of the first paragraph of 7.2.4 with the following new text:
Octet 4 and optionally Octet 5 (or – if the originator address is used – Octet 5 and optionally
Octet 6) of the DATA UNIT IDENTIFIER of the ASDU define the station address which is
specified in the following.
7.2.6.18 Seven octet binary time
Replace the paragraph beginning "The summer-time bit SU …" with the following new text:
The summer-time bit SU may optionally be used, but is not recommended. A time tag having
the SU flag set will indicate the same time value as time tag having the SU flag clear and
indicating a time value exactly one hour earlier. The use of the SU-Bit may be useful to assign

 IEC 2015
the correct hour to information objects which are generated during the first hour after
switching from summer-time to standard time.
7.2.6.21 Cause of initialization
Replace
COI := CP8{UI7[1.7],BS1[8]}   (Type 1.1)
UI7[1.7]<0.127>
with the following new text:
COI := CP8{UI7[1.7],BS1[8]}
UI7[1.7]<0.127>    (Type 1.1)
7.2.6.38 Status of file
Replace
SOF := CP8{STATUS,LFD,FOR,FA}
STATUS := UI5[1.5]<0.32>   (Type 1.1)
<0> := default
<1.15> := reserved for standard definitions of this companion standard
(compatible range)
<16.32>:= reserved for special use (private range)
with the following new text:
SOF := CP8{STATUS,LFD,FOR,FA}
STATUS := UI5[1.5]<0.31>   (Type 1.1)
<0> := default
<1.15> := reserved for standard definitions of this companion standard
(compatible range)
<16.31>:= reserved for special use (private range)
7.3.1.20 TYPE IDENT 20: M_PS_NA_1
Packed single-point information with status change detection
Add, at the end of 7.3.1.20, the following new Note:
NOTE OV within the QDS is not used in this Information Object and is always set to <0>.
Figure 50 – ASDU: M_PS_NA_1 Sequence of packed single-point information with status
change detection
Replace the description of Status change detection in Information Object j in Figure 50 with
the following new text:
SCD = Status + status change detection, 32 bit, defined in 7.2.6.40
Belongs to information object address A+16*(j-1)
7.3.4.2 TYPE IDENT 101:C_CI_NS_1
Counter interrogation command
Replace the following existing text:
CAUSE OF TRANSMISSION
in control direction:
– 6 – IEC 60870-5-101:2003/AMD1:2015
 IEC 2015
<6>:= activation
<8>:= deactivation
in monitor direction:
<7>:= activation confirmation
<9>:= deactivation confirmation
<10>:= activation termination
<44>:= unknown type identification
<45>:= unknown cause of transmission
<46>:= unknown common address of ASDU
<47>:= unknown information object address
with the following new text:
CAUSE OF TRANSMISSION
in control direction:
<6>:= activation
in monitor direction:
<7>:= activation confirmation
<10>:= activation termination
<44>:= unknown type identification
<45>:= unknown cause of transmission
<46>:= unknown common address of ASDU
<47>:= unknown information object address
Figure 79 – ASDU – P_ME_NA_1 Parameter of measured values, normalized value
Replace, in Figure 79 within the last Octet of the ASDU figure,"UI8" with "CP8".
Figure 80 – ASDU: P_ME_NB_1 Parameter of measured values, scaled value
Replace, in Figure 80 within the last Octet of the ASDU figure, "UI8" by "CP8"
7.4 Selections from IEC 60870-5-5: Basic application functions
st
Replace, in the 1 paragraph of 7.4, "General interrogation (6.6)" with "General interrogation,
Outstation interrogation (6.6)"
7.4.5 Selection from station interrogation, outstation interrogation
rd
Replace, in the 3 paragraph after Table 17, "general interrogation" with "station
interrogation"
7.4.6 Selections from clock synchronization
Replace the last sentence of the 3rd paragraph of 7.4.6 with the following new text:
The summer-time bit SU shall be set to <0> if summer-time is not used.
7.4.11.1 General addressing structure of file transfer
7.4.11.1.1 Introduction
rd
Replace the 3 paragraph of 7.4.11.1.1 with the following new text:
The following names of files are defined:

 IEC 2015
Name of file:
<0> := default
(for directories containing different file types
and for "Call directory" by all types calling)
<1> := transparent file
<2> := disturbance data of protection equipment
<3> := sequences of events
<4> := sequences of recorded analogue values
<5.127> := reserved for further compatible definitions
<128.255> := reserved for special use (private range)
The second octet of the name of the file is reserved for further compatible definitions.
7.4.11.2.4 Structure of disturbance data files
th
st rd
Replace in the 1 , 3 and 4 paragraphs of 7.4.11.2.4, "time-tags" by "tags".
Figure 100 – Structure of disturbance data of a protection equipment
Replace within Figure 100 the description
"Last section
Parameter of channel n"
with the following new text:
"Penultimate section
Parameter of channel n"
7.4.11.2.5 Mapping of the list of recorded disturbances to the directory
st
Replace, in the last sentence of the 1 paragraph of 7.4.11.2.5, the term "binary time tags"
with "tags".
Figure 104 – Sequential procedure, transmission of disturbance data files
Replace Figure 104 “Sequential procedure, transmission of disturbance data files” with the
following updated Figure 104.
– 8 – IEC 60870-5-101:2003/AMD1:2015
 IEC 2015
Controlling station Communication services Controlled station Action
Selection of disturbance to
F_SC_NA_1 file A_SELECT_FILE.ind
A_SELECT_FILE.req
be transmitted
(automatically or by
operator)
Selected disturbance is
A_FILE_READY.ind F_FR_NA_1 file
A_FILE_READY.req
ready to be transmitted
(pos/neg)
Request of disturbance to
be transmitted
A_CALL_FILE.req F_SC_NA_1 file A_CALL_FILE.ind
(automatically or by
operator)
Section 1 (parameter of
A_SECTION1_READY.ind F_SR_NA_1 file A_SECTION1_READY.req
disturbance) is ready to be
transmitted (pos/neg)
file
A_CALL_SECTION1.req F_SC_NA_1 A_CALL_SECTION1.ind
Request of Section 1
Section 1, Segment 1
A_SEGMENT1.ind F_SG_NA_1 file A_SEGMENT1.req
(parameter of a
disturbance is being
transmitted
A_SEGMENT2.ind file
F_SG_NA_1
A_SEGMENT2.req Section 1, Segment 2
(parameter of a
disturbance) is being
…
transmitted
Last segment Section 1
A_LAST_SEGMENT1.ind
F_LS_NA_1 file A_LAST_SEGMENT1.req
(parameter of disturbance)
is transmitted (pos/neg)
Acknowledge of
A_ACK_SECTION1.req
F_AF_NA_1 file A_ACK_SECTION1.ind
transmission of Section 1
(pos/neg)
Section 2 (tags of a
A_SECTION2_READY.req
A_SECTION2_READY.ind F_SR_NA_1 file
disturbance) is ready to be
transmitted (pos/neg)
A_CALL_SECTION2.req
F_SC_NA_1 file A_CALL_SECTION2.ind
Request of section 2
 IEC 2015
Controlling station Communication services Controlled station Action

Section 2, Segment 1 (tags
A_SEGMENT1.ind F_SG_NA_1 file A_SEGMENT1.req
of disturbance) is being
transmitted
F_SG_NA_1 file A_SEGMENT2.req
A_SEGMENT2.ind
Section 2, Segment 2 (tags
of disturbance) is being
transmitted
…
F_LS_NA_1 file
A_LAST_SEGMENT2.ind A_LAST_SEGMENT2.req Last segment Section 2
(tags of disturbance) is
transmitted (pos/neg)
F_AF_NA_1 file
A_ACK_SECTION2.req A_ACK_SECTION2.ind
Acknowledge of
transmission Section 2
(pos/neg)
A_SECTION3_READY.ind F_SR_NA_1 file A_SECTION3_READY.req
Section 3 (parameter of
channel 1) is ready to be
transmitted (pos/neg)
A_CALL_SECTION3.req F_SC_NA_1 file A_CALL_SECTION3.ind
Request of Section 3
Section 3, Segment 1
A_SEGMENT1.ind F_SG_NA_1 file A_SEGMENT1.req
(parameter of channel 1) is
being transmitted
F_SG_NA_1 file A_SEGMENT2.req
A_SEGMENT2.ind
Section 3, Segment 2
(parameter of channel 1) is
being transmitted
…
Last Segment Section 3
F_LS_NA_1 file
A_LAST_SEGMENT3.ind A_LAST_SEGMENT3.req (parameter of channel 1) is
transmitted (pos/neg)
F_AF_NA_1 file
A_ACK_SECTION3.req A_ACK_SECTION3.ind Acknowledge of
transmission Section 3
(pos/neg)
A_SECTION4_READY.ind F_SR_NA_1 file A_SECTION4_READY.req
Section 4 (disturbance data
of channel 1) is ready to be
transmitted (pos/neg)
A_CALL_SECTION4.req F_SC_NA_1 file A_CALL_SECTION4.ind
Request of Section 4
Section 4, Segment 1
A_SEGMENT1.ind F_SG_NA_1 file A_SEGMENT1.req
(disturbance data of
channel 1) is being
transmitted
F_SG_NA_1 file A_SEGMENT2.req
A_SEGMENT2.ind
Section 4, Segment 2
(disturbance data of
… channel 1) is being
transmitted
A_LAST_SEGMENT4.ind F_LS_NA_1 file A_LAST_SEGMENT4.req
Last Segment Section 4
(parameter of channel 1 is
transmitted (pos/neg)
F_AF_NA_1 file
A_ACK_SECTION4.req A_ACK_SECTION4.ind
Acknowledge of
transmission Section 4
(pos/neg)
Section m (parameter of
A_SECTION m _READY.ind _READY.req
F_SR_NA_1 file A_SECTION m
channel n) is ready to be
transmitted (pos/neg)
F_SC_NA_1 file A_CALL_SECTION m.ind
A_CALL_SECTION
m
.req
Request of section m
– 10 – IEC 60870-5-101:2003/AMD1:2015
 IEC 2015
Controlling station Communication services Controlled station Action
Section m, Segment 1
F_SG_NA_1 file A_SEGMENT1.req
A_SEGMENT1.ind
(parameter of channel n) is
being transmitted
F_SG_NA_1 file
A_SEGMENT2.ind A_SEGMENT2.req
Section m, Segment 2
(parameter of channel n) is
being transmitted
…
A_LAST_SEGMENTm.ind F_LS_NA_1 file A_LAST_SEGMENTm.req Last Segment Section m
(parameter of channel n) is
being transmitted (pos/neg)
A_ACK_SECTION m.req F_AF_NA_1 file
A_ACK_SECTION m.ind
Acknowledge of
transmission Section m
(pos/neg)
A_SECTION m+1_READY.ind
A_SECTION m+1_READY.req Section m+1 (disturbance
F_SR_NA_1 file
data of channel n) is ready
to be transmitted (pos/neg)
A_CALL_SECTION m+1.req
F_SC_NA_1 file
A_CALL_SECTION m+1.ind
Request of Section m+1
Section m+1 Segment 1
F_SG_NA_1 file A_SEGMENT1.req
A_SEGMENT1.ind (disturbance data of
channel n) is being
transmitted
Section m+1 Segment 2
F_SG_NA_1 file A_SEGMENT2.req
A_SEGMENT2.ind
(disturbance data of
channel n) is being
transmitted
…
Last Segment Section m+1
A_LAST_SEGMENT.ind F_LS_NA_1 file A_LAST_SEGMENT.req
(disturbance data of
channel n) is transmitted
(pos/neg)
Acknowledge of
LAST_ACK_SECTION m+1.req LAST_ACK_SECTION m+1.ind
F_AF_NA_1 file
transmission Section m+1
(pos/neg)
A_LAST_SECTION.ind F_LS_NA_1 file A_LAST_SECTION.req
Last section is transmitted
(pos/neg)
F_AF_NA_1 file Acknowledge o
...