EN IEC 61131-10:2019

SLOVENSKI STANDARD
01-november-2019
Programirljivi krmilniki - 10. del: PLC odprt XML format za izmenjavo (IEC 61131-
10:2019)
Programmable controllers - Part 10: PLC open XML exchange format (IEC 61131-
10:2019)
Speicherprogrammierbare Steuerungen - Teil 10: XML-basiertes Austauschformat für
Programme nach IEC 61131-3 (IEC 61131-10:2019)
Automates programmables - Partie 10: Format d'échange XML ouvert PLC (IEC 61131-
10:2019)
Ta slovenski standard je istoveten z: EN IEC 61131-10:2019
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61131-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
ICS 25.040.40; 35.240.30; 35.240.50
English Version
Programmable controllers - Part 10: PLC open XML exchange
format
(IEC 61131-10:2019)
Automates programmables - Partie 10: Format d'échange Speicherprogrammierbare Steuerungen - Teil 10: XML-
XML ouvert PLC basiertes Austauschformat für Programme nach IEC 61131-
(IEC 61131-10:2019) 3
(IEC 61131-10:2019)
This European Standard was approved by CENELEC on 2019-05-29. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61131-10:2019 E

European foreword
The text of document 65B/1147/FDIS, future edition 1 of IEC 61131-10, prepared by SC 65B
"Measurement and control devices" of IEC/TC 65 "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-29
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-29
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61131-10:2019 was approved by CENELEC as a European
Standard without any modification.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61131-1 - Programmable controllers - Part 1: General EN 61131-1 -
information
IEC 61131-3 - Programmable controllers - Part 3: Programming EN 61131-3 -
languages
IEC 61131-10 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Programmable controllers –
Part 10: PLC open XML exchange format
Automates programmables –
Partie 10: Format d'échange XML ouvert PLC
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.240.30; 35.240.50 ISBN 978-2-8322-6760-8
– 2 – IEC 61131-10:2019  IEC 2019
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 11
1.1 General . 11
1.2 Implementation specific parameters . 12
2 Normative references . 13
3 Terms, definitions, abbreviated terms and acronyms . 13
3.1 General terms and definitions . 13
3.2 Abbreviated terms . 13
4 Overview of schema concepts . 14
4.1 Schema versioning . 14
4.2 Naming conventions. 14
4.3 Coordinate system of graphical languages . 14
4.4 Schema extension concepts . 17
5 Compliance . 18
5.1 General . 18
5.2 Feature tables . 18
5.3 Vendor's compliance statement . 18
6 Main schema element "Project" . 19
6.1 General . 19
6.2 "FileHeader" . 19
6.3 "ContentHeader" . 20
6.4 "Types" . 21
6.5 "Instances" . 21
6.5.1 General ("Configuration") . 21
6.5.2 "Resource" . 22
6.5.3 "AccessVars" . 25
6.5.4 "ConfigVars" . 25
7 Abstract complex types . 26
7.1 Purpose of abstract complex types . 26
7.2 Abstract complex types for data type specifications . 27
7.2.1 General . 27
7.2.2 "TypeSpecBase" . 27
7.2.3 "InstantlyDefinableTypeSpecBase" . 27
7.3 Abstract complex types for behaviour representations . 27
7.3.1 General . 27
7.3.2 "BehaviourRepresentationBase" . 28
7.3.3 "ProgrammingLanguageBase" . 28
7.4 Abstract complex types for graphical objects. 28
7.4.1 General . 28
7.4.2 "IdentifiedObjectBase" . 30
7.4.3 "GraphicalObjectBase" . 30
7.4.4 "CommonObjectBase" . 31
7.4.5 "FbdObjectBase" . 31
7.4.6 "LdObjectBase" . 31
7.4.7 "SfcObjectBase" . 32

IEC 61131-10:2019  IEC 2019 – 3 –
7.4.8 "NetworkBase" . 32
7.5 Abstract complex types for textual constructs . 33
7.5.1 General . 33
7.5.2 "TextualObjectBase" . 34
7.5.3 "NamespaceContentBase" . 35
7.5.4 "TaskBase" . 36
8 Namespace declaration . 36
9 User-defined data type declaration . 37
9.1 "UserDefinedTypeDecl" . 37
9.2 "ArrayTypeSpec" . 37
9.3 "DirectlyDerivedTypeSpec" . 38
9.4 "EnumTypeSpec" . 38
9.5 "EnumTypeWithNamedValueSpec" . 39
9.6 "StructTypeSpec" . 39
9.7 "SubrangeTypeSpec" . 40
9.8 "ReferenceTypeSpec" . 40
9.9 "ElementaryType" . 41
10 POU declaration . 41
10.1 "PouDecl" . 41
10.2 "Program" . 41
10.3 "FunctionBlock". 43
10.4 "Class" . 44
10.5 "Function" . 45
10.6 "Interface" . 46
10.7 "Action" . 46
10.8 "NamedTransition" . 47
10.9 "MethodPrototype" . 47
10.10 "Method" . 48
10.11 "ParameterSet" . 50
10.12 "VarListWithAccessSpec" . 52
10.13 "AccessSpecifiers" . 52
10.14 "Body". 52
10.15 "BodyWithoutSFC" . 53
10.16 "Predicate" . 53
11 Variable declaration . 54
11.1 "VarList" . 54
11.2 "ExternalVarList" . 55
11.3 "VariableDecl" . 55
11.4 "VariableDeclPlain" . 56
11.5 "TypeRef" . 56
11.6 "Value" . 56
11.7 "AddressExpression" . 57
11.8 "FixedAddressExpression" . 58
12 Behaviour representation . 58
12.1 "IL" . 58
12.2 "ST" . 58
12.3 "FBD". 59
12.4 "FbdNetwork" . 59

– 4 – IEC 61131-10:2019  IEC 2019
12.5 "LD" . 59
12.6 "LadderRung" . 60
12.7 "SFC". 60
13 Graphical behaviour representation . 60
13.1 General . 60
13.2 Common elements . 61
13.2.1 "Comment" . 61
13.2.2 "Connector" . 61
13.2.3 "Continuation". 62
13.2.4 "ActionBlocks" . 62
13.3 FBD elements . 64
13.3.1 "Block" . 64
13.3.2 "graphicalFormalParameterCommon" . 67
13.3.3 "DataSource" . 67
13.3.4 "DataSink" . 68
13.3.5 "Unconnected" . 68
13.3.6 "Jump" . 69
13.3.7 "Return" . 70
13.4 LD elements . 70
13.4.1 "LeftPowerRail" . 70
13.4.2 "RightPowerRail" . 71
13.4.3 "Coil" . 71
13.4.4 "Contact" . 72
13.4.5 "CompareContact" . 73
13.5 SFC elements . 74
13.5.1 "Step" . 74
13.5.2 "Transition" . 75
13.5.3 "SelectionDivergence" . 76
13.5.4 "SelectionConvergence" . 77
13.5.5 "SimultaneousDivergence" . 78
13.5.6 "SimultaneousConvergence" . 78
13.6 Connections . 79
13.6.1 General . 79
13.6.2 "ConnectionPointIn" . 79
13.6.3 "Connection" . 80
13.6.4 "FeedbackConnection" . 81
13.6.5 "ConnectionPointOut" . 81
14 Resource declaration . 82
14.1 "StandardTask" . 82
14.2 "ParameterAssignment" . 82
15 Miscellaneous . 82
15.1 "XyDecimalValue" . 82
15.2 "AddData" . 83
15.3 "TextBase" . 83
15.4 "SimpleText" . 83
15.5 "EdgeModifierType" . 84
Annex A (normative) Formal XML exchange format schema definition . 85
Annex B (informative) Recommended schemata . 161

IEC 61131-10:2019  IEC 2019 – 5 –
B.1 General . 161
B.2 Recommended schemata to be used by "AddData" . 164
B.3 Recommended schemata to be used by abstract complex type . 172
Annex C (informative) Example XML document . 190
Bibliography . 276
Figure 1 – Main overview of XML exchange format usage (example) . 11
Figure 2 – Mapping coordinate information to the coordinate system . 15
Figure 3 – Transforming position using the scaling information . 15
Figure 4 – Objects anchor points and object rectangles examples . 17
Figure 5 – Main schema element "Project" . 19
Figure 6 – Element "FileHeader" . 20
Figure 7 – Element "ContentHeader" . 20
Figure 8 – Element "Types" . 21
Figure 9 – Element "Instances" . 22
Figure 10 – Element "Resource" . 23
Figure 11 – Element "ProgramInstance" . 24
Figure 12 – Element "AccessVars" . 25
Figure 13 – Element "ConfigVars" . 26
Figure 14 – Extension relationship among complex types for data type specifications . 27
Figure 15 – Extension relationship among complex types for behaviour representations . 28
Figure 16 – Extension relationship among complex types for graphical objects . 29
Figure 17 – Complex type "IdentifiedObjectBase" . 30
Figure 18 – Complex type "GraphicalObjectBase" . 30
Figure 19 – Complex type "CommonObjectBase" . 31
Figure 20 – Complex type "FbdObjectBase" . 31
Figure 21 – Complex type "LdObjectBase" . 32
Figure 22 – Complex type "SfcObjectBase" . 32
Figure 23 – Complex type "NetworkBase" . 33
Figure 24 – Extension relationship among complex types for textual objects . 34
Figure 25 – Complex type "TextualObjectBase" . 35
Figure 26 – Complex type "NamespaceContentBase" . 35
Figure 27 – Complex type "TaskBase" . 36
Figure 28 – Complex type "NamespaceDecl" . 36
Figure 29 – Complex type "UserDefinedTypeDecl" . 37
Figure 30 – Complex type "ArrayTypeSpec" . 38
Figure 31 – Complex type "DirectlyDerivedTypeSpec" . 38
Figure 32 – Complex type "EnumTypeSpec" . 39
Figure 33 – Complex type "EnumTypeWithNamedValueSpec" . 39
Figure 34 – Complex type "StructTypeSpec" . 40
Figure 35 – Complex type "SubrangeTypeSpec" . 40
Figure 36 – Complex type "ReferenceTypeSpec" . 40
Figure 37 – Complex type "PouDecl" . 41

– 6 – IEC 61131-10:2019  IEC 2019
Figure 38 – Complex type "Program" . 42
Figure 39 – Complex type "FunctionBlock" . 43
Figure 40 – Complex type "Class" . 44
Figure 41 – Complex type "Function" . 45
Figure 42 – Complex type "Interface" . 46
Figure 43 – Complex type "Action" . 46
Figure 44 – Complex type "NamedTransition" . 47
Figure 45 – Complex type "MethodPrototype" . 48
Figure 46 – Complex type "Method" . 49
Figure 47 – Complex type "ParameterSet" . 51
Figure 48 – Complex type "VarListWithAccessSpec" . 52
Figure 49 – Complex type "Body" . 53
Figure 50 – Complex type "BodyWithoutSFC" . 53
Figure 51 – Complex type "Predicate" . 54
Figure 52 – Complex type "VarList" . 54
Figure 53 – Complex type "ExternalVarList" . 55
Figure 54 – Complex type "VariableDecl" . 55
Figure 55 – Complex type "VariableDeclPlain" . 56
Figure 56 – Complex type "TypeRef" . 56
Figure 57 – Complex type "Value" . 57
Figure 58 – Complex type "AddressExpression" . 57
Figure 59 – Complex type "FixedAddressExpression" . 58
Figure 60 – Complex type "IL". 58
Figure 61 – Complex type "ST" . 58
Figure 62 – Complex type "FBD" . 59
Figure 63 – Complex type "FbdNetwork" . 59
Figure 64 – Complex type "LD" . 59
Figure 65 – Complex type "LadderRung". 60
Figure 66 – Complex type "SFC" . 60
Figure 67 – Complex type "Comment" . 61
Figure 68 – Complex type "Connector" . 61
Figure 69 – Complex type "Continuation" . 62
Figure 70 – Complex type "ActionBlocks" . 63
Figure 71 – Complex type "Block" . 66
Figure 72 – Complex type "DataSource" . 67
Figure 73 – Complex type "DataSink" . 68
Figure 74 – Complex type "Unconnected" . 69
Figure 75 – Complex type "Jump" . 69
Figure 76 – Complex type "Return" . 70
Figure 77 – Complex type "LeftPowerRail" . 70
Figure 78 – Complex type "RightPowerRail" . 71
Figure 79 – Complex type "Coil" . 72
Figure 80 – Complex type "Contact" . 73

IEC 61131-10:2019  IEC 2019 – 7 –
Figure 81 – Complex type "CompareContact" . 74
Figure 82 – Complex type "Step" . 75
Figure 83 – Complex type "Transition" . 76
Figure 84 – Complex type "SelectionDivergence" . 77
Figure 85 – Complex type "SelectionConvergence" . 78
Figure 86 – Complex type "SimultaneousDivergence" . 78
Figure 87 – Complex type "SimultaneousConvergence" . 79
Figure 88 – Complex type "ConnectionPointIn" . 80
Figure 89 – Complex type "Connection" . 80
Figure 90 – Complex type "FeedbackConnection" . 81
Figure 91 – Complex type "ConnectionPointOut" . 81
Figure 92 – Complex type "StandardTask" . 82
Figure 93 – Complex type "ParameterAssignment" . 82
Figure 94 – Complex type "XyDecimalValue" . 83
Figure 95 – Complex type "AddData" . 83
Figure 96 – Complex type "TextBase" . 83
Figure 97 – Complex type "SimpleText" . 84
Figure B.1 – Only IEC 61131-3 features . 161
Figure B.2 – Vendor specific extensions "AddData" . 162
Figure B.3 – Vendor specific extensions (abstract complex type) . 163

– 8 – IEC 61131-10:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROGRAMMABLE CONTROLLERS –
Part 10: PLC open XML exchange format
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
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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.
International Standard IEC 61131-10 has been prepared by subcommittee 65B: Measurement
and control devices, of IEC technical committee 65: Industrial-process measurement, control
and automation.
The text of this International Standard is based on the following documents:
FDIS Result on voting
65B/1147/FDIS 65B/1153/RVD
Full information on the voting for the approval of this International 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.

IEC 61131-10:2019  IEC 2019 – 9 –
A list of all parts in the IEC 61131 series, published under the general title Programmable
controllers, can be found on the IEC website.
This IEC standard includes Code Components i.e. components that are intended to be directly
processed by a computer. Such content is any text found between the markers BEGINS> and , or otherwise is clearly labelled in this standard as a Code
Component.
The purchase of this IEC standard carries a copyright license for the purchaser to sell
software containing Code Components from this standard to end users either directly or via
distributors, subject to IEC software licensing conditions, which can be found at:
www.iec.ch/CCv1.
The Code Components included in this IEC standard are also available as an electronic
machine-readable file at http://www.plcopen.org/technical-activities/IEC61131-
10/CodeComponents/PLCopenXML.htm.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on IEC web site 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 10 – IEC 61131-10:2019  IEC 2019
INTRODUCTION
The International Standard IEC 61131 describes programmable logic controllers (PLCs).
IEC 61131-3 defines programming languages. Users want standardized programming
languages and the ability to exchange a complete program or parts of that program between
different development environments, i.e. from an exporting environment to an importing
environment.
IEC 61131-3 defines program organization units (POUs). But an entire program also consists
of user-defined data types, global and external declarations and other elements besides the
POUs. In this document, the term "IEC 61131-3 project" is used. It contains all above-
mentioned language elements, required for an exchange, in order to get a consistent program
in the importing environment.
The exchange of POUs developed in one of the textual languages, i.e. instruction list (IL) and
structured text (ST) or the textual representation of sequential function charts (SFC) is
possible, because a syntax description of these languages is part of the IEC 61131-3
standard. The objective of this document is to extend the reuse of programmed solutions both
for textual languages and graphical languages, i.e. function block diagram (FBD) and ladder
diagram (LD) or the graphical representation of SFCs. Furthermore, the completeness of
exchange between the different environments depends on the supported features that are
listed in the compliance list defined in IEC 61131-3.
This document defines a solution independent eXtensible Markup Language (XML) based
exchange format, to be supported by interfaces of different kinds of software tools. Beside
textual and program logic information, it also provides the ability to transfer graphical
representation information, e.g. the position and size of function blocks and how they are
connected. The design of the 'transferred' parts shall represent the same program logic,
however it may be altered in look and feel.
This document's XML exchange format enables a transfer of IEC 61131-3 projects, from an
exporting environment to an importing environment, including extensions for layout and
formatting.
This document's XML exchange format can not only describe correct IEC 61131-3 POUs, but
it can represent a working state of the IEC 61131-3 project. For example, even if the
IEC 61131-3 source project is incomplete, for example if it contains compile errors, it can be
represented.
Syntactically incorrect IEC 61131-3 projects can be
...