ISO 13374-3:2012

INTERNATIONAL ISO
STANDARD 13374-3
First edition
2012-02-15
Condition monitoring and diagnostics
of machines — Data processing,
communication and presentation —
Part 3:
Communication
Surveillance et diagnostic d’état des machines — Traitement, échange
et présentation des données —
Partie 3: Échange
Reference number
©
ISO 2012
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ii © ISO 2012 – All rights reserved

Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Open CM&D information architecture communication requirements . 1
4.1 Overview . 1
4.2 Reference data library communication requirements . 2
4.3 Communications initiation requirements . 2
4.4 Message content requirements . 2
5 Open CM&D processing architecture communication requirements . 2
5.1 Overview . 2
5.2 Diverse technologies and UML representation . 3
5.3 Interface types and general interaction . 4
5.4 Specific ISO 13374-2 interface method requirements . 7
5.5 Data provider specification support considerations . 8
[1]
Annex A (informative) Open CM&D information architecture based on IEC 62264-5 .10
Bibliography .21
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13374-3 was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition
monitoring, Subcommittee SC 5, Condition monitoring and diagnostics of machines.
ISO 13374 consists of the following parts, under the general title Condition monitoring and diagnostics of
machines — Data processing, communication and presentation:
— Part 1: General guidelines
— Part 2: Data processing
— Part 3: Communication
The following part is planned:
— Part 4: Presentation
iv © ISO 2012 – All rights reserved

Introduction
The various computer software systems written for condition monitoring and diagnostics (CM&D) of machines
that are currently in use cannot easily exchange data or operate in a plug-and-play fashion without an extensive
communication infrastructure. The lack of an all-purpose communication system makes it difficult to integrate
various CM&D sub-systems and provide a unified view of the condition of machinery to users. The intent
of ISO 13374 is to provide the basic requirements for open CM&D software architecture in order to allow
CM&D information to be processed, communicated and displayed by various software packages independent
of platform-specific or hardware-specific protocols.
ISO 13374-1 gives a general overview of data processing, communication and presentation. ISO 13374-2
provides greater details of the data-processing methodology and requirements present in today’s software-
enhanced systems. This part of ISO 13374 provides the requirements of the data communication architecture
for open CM&D systems.
INTERNATIONAL STANDARD ISO 13374-3:2012(E)
Condition monitoring and diagnostics of machines — Data
processing, communication and presentation —
Part 3:
Communication
1 Scope
This part of ISO 13374 specifies requirements for data communication for an open condition monitoring and
diagnostics (CM&D) reference information architecture and for a reference processing architecture. Software
design professionals require communications to be defined for exchange of CM&D information between
software systems. This part of ISO 13374 facilitates the interoperability of CM&D systems.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable
for its application. For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
ISO 8601, Data elements and interchange formats — Information interchange — Representation of dates and times
ISO 13372, Condition monitoring and diagnostics of machines — Vocabulary
ISO 13374-1:2003, Condition monitoring and diagnostics of machines — Data processing, communication and
presentation — Part 1: General guidelines
ISO 13374-2:2007, Condition monitoring and diagnostics of machines — Data processing, communication and
presentation — Part 2: Data processing
ISO/IEC 19501, Information technology — Open Distributed Processing — Unified Modeling Language (UML)
Version 1.4.2
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13372 apply.
4 Open CM&D information architecture communication requirements
4.1 Overview
An information architecture describes all the data objects and their properties (or attributes), property data
types, data object relationships, reference data, and data documents for a given system or application. As
specified in ISO 13374-2, an open CM&D information architecture describes the content for each of the five
layers shown in Figure 1.
Figure 1 — CM&D Information architecture layers (from ISO 13374-2:2007)
During a communications exchange between applications in an open CM&D information architecture, the
message content shall reference and validate against a defined layer 5 data document definition and comply
with a defined layer 4 reference data library. Communication message implementations vary according to
application requirements. Annex A details options for implementation.
4.2 Reference data library communication requirements
An open CM&D information architecture shall specify the method for communication receivers to access the
defined layer 4 reference data library. The architecture shall also specify the methodology for the publication
of updates from the reference data library owner to predefined subscribers.
4.3 Communications initiation requirements
An open CM&D information architecture shall specify the initiation requirements of the provider application for
each method of communication the architecture includes. All date and time notations in the initiation information
should reference back to a specific instant in time using the Gregorian (Common Era or CE) calendar, with a
lexical representation based upon ISO 8601. Communication initiation shall also reference a defined layer 5
data document definition to which the subsequent message content complies.
4.4 Message content requirements
An open CM&D information architecture shall specify the message content requirements of the provider
application for each method of communication the architecture includes. The message content definition shall
reference the appropriate data document definition(s), along with the specific data format rendering of the
document(s), including the compression and encryption utilized.
5 Open CM&D processing architecture communication requirements
5.1 Overview
A processing architecture describes all the interactions or transactions between modules internal to the
software system itself, external to end-user interactions or external to other software system interactions. As
specified in ISO 13374-1, an open CM&D processing architecture specification shall utilize the processing
architecture shown in Figure 2.
This architecture is defined as blocks of data-processing functionality. After each block in the system has been
properly configured, the basic data are converted into digital form in data acquisition (DA) and are processed
in various ways as they are transformed into actionable information, resulting in advisory generation (AG). As
the processing progresses from DA to AG, data from preceding blocks need to be transferred to subsequent
blocks and additional information acquired from or sent to external systems. Similarly, as the data evolve
into information, both standard technical displays and graphical presentation formats are required. In many
2 © ISO 2012 – All rights reserved

applications, data archiving is required in order to maintain a history of the output of each block. The DA,
DM and SD blocks are responsible for assessing data quality. Output should be identified as good, bad or
undetermined.
This part of ISO 13374 defines the communication requirements for any open CM&D processing architecture.
With such an approach, the data-processing blocks from various suppliers can be integrated into a complete,
functional system.
Figure 2 — Data-processing block diagram (from ISO 13374-1:2003)
5.2 Diverse technologies and UML representation
5.2.1 Introduction
There are normally different software and hardware environments as data come from sensors and are analysed
by higher-level CM&D information systems. CM&D systems often start with data acquisition in embedded
environments with real-time constraints. Information is then processed and refined in subsequent system
blocks and made available for health assessment, prognostics, and advisory generation. These requirements
currently lead to disparate technology choices. The technologies and software used by the “analysis-oriented”
processing blocks (HA, PA and AG) are often different from those used in the “data-oriented” processing
blocks (DA, DM and SD).
The amount of data communicated in the data-oriented blocks is vast compared to the small quantity of
information generated by analysis-oriented blocks. The data-oriented blocks are normally designed for high-
speed processing and often with real-time methodologies. For analysis-oriented blocks, results should be
timely, but are not usually required in milliseconds or real time. In addition, technology continues to evolve.
Programming languages, network protocols, and data storage methods change over time.
An ISO/IEC 19501-compliant Unified Modelling Language (UML) model shall be specified to support the
communications of the open CM&D data-processing architecture that holds the base information classes
and interfaces required. As shown in Figure 3, the UML shall then be utilized to directly map into specific
technologies such as XML-based web services or binary embedded system communications.
Specific application
Selection of technology
UML
technology mapping
Selection of interface
Interface(s) specification Interface(s) specification
Specific data format
Data format specification
Data format specification
Figure 3 — UML to specific technology
5.2.2 Standard data content
When the content of the data is standardized, the conversion from one technology form to another becomes a
simple one-to-one mapping effort. Thus, a binary formatted message in an embedded system can be converted
using a generic adapter to an XML format when required.
5.2.3 Relationship to an information managem
...