IEC 61784-5-6:2018

IEC 61784-5-6 ®
Edition 4.0 2018-08
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 5-6: Installation of fieldbuses – Installation profiles for CPF 6

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.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. 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: sales@iec.ch.
IEC 61784-5-6 ®
Edition 4.0 2018-08
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –

Part 5-6: Installation of fieldbuses – Installation profiles for CPF 6

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.40 ISBN 978-2-8322-5940-5

– 2 – IEC 61784-5-6:2018 © IEC 2018
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviated terms . 10
4 CPF 6: Overview of installation profiles . 10
5 Installation profile conventions . 11
6 Conformance to installation profiles . 11
Annex A (normative) CPF 6 Type 8 network specific installation profile . 13
A.1 Installation profile scope . 13
A.2 Normative references . 13
A.3 Installation profile terms, definitions, and abbreviated terms . 14
A.3.1 Terms and definitions. 14
A.3.2 Abbreviated terms . 14
A.3.3 Conventions for installation profiles . 15
A.4 Installation planning . 15
A.4.1 General . 15
A.4.1.1 Objective . 15
A.4.1.2 Cabling in industrial premises . 15
A.4.1.3 The planning process . 15
A.4.1.4 Specific requirements for CPs . 15
A.4.1.5 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 15
A.4.2 Planning requirements . 15
A.4.2.1 Safety . 15
A.4.2.2 Security . 16
A.4.2.3 Environmental considerations and EMC . 16
A.4.2.4 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 16
A.4.3 Network capabilities . 16
A.4.3.1 Network topology . 16
A.4.3.2 Network characteristics. 18
A.4.4 Selection and use of cabling components . 21
A.4.4.1 Cable selection . 21
A.4.4.2 Connecting hardware selection . 24
A.4.4.3 Connections within a channel/permanent link . 26
A.4.4.4 Terminators . 27
A.4.4.5 Device location and connection . 27
A.4.4.6 Coding and labelling . 27
A.4.4.7 Earthing and bonding of equipment and devices and shielded cabling . 28
A.4.4.8 Storage and transportation of cables . 29
A.4.4.9 Routing of cables . 29
A.4.4.10 Separation of circuit . 29
A.4.4.11 Mechanical protection of cabling components . 29
A.4.4.12 Installation in special areas . 29
A.4.5 Cabling planning documentation . 29

A.4.5.1 Common description . 29
A.4.5.2 Cabling planning documentation for CPs . 29
A.4.5.3 Network certification documentation . 29
A.4.5.4 Cabling planning documentation for generic cabling in accordance with
ISO/IEC 11801-3 . 29
A.4.6 Verification of cabling planning specification . 29
A.5 Installation implementation . 29
A.5.1 General requirements . 29
A.5.1.1 Common description . 29
A.5.1.2 Installation of CPs . 29
A.5.1.3 Installation of generic cabling in industrial premises . 29
A.5.2 Cable installation . 29
A.5.2.1 General requirements for all cabling types . 29
A.5.2.2 Installation and routing . 31
A.5.2.3 Specific requirements for CPs . 31
A.5.2.4 Specific requirements for wireless installation . 31
A.5.2.5 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 31
A.5.3 Connector installation . 32
A.5.3.1 Common description . 32
A.5.3.2 Shielded connectors . 32
A.5.3.3 Unshielded connectors . 32
A.5.3.4 Specific requirements for CPs . 32
A.5.3.5 Specific requirements for wireless installation . 33
A.5.3.6 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 33
A.5.4 Terminator installation . 33
A.5.5 Device installation . 33
A.5.6 Coding and labelling . 33
A.5.7 Earthing and bonding of equipment and devices and shield cabling . 33
A.5.8 As-implemented cabling documentation . 34
A.6 Installation verification and installation acceptance test . 34
A.6.1 General . 34
A.6.2 Installation verification . 34
A.6.2.1 General . 34
A.6.2.2 Verification according to cabling planning documentation . 34
A.6.2.3 Verification of earthing and bonding . 34
A.6.2.4 Verification of shield earthing . 34
A.6.2.5 Verification of cabling system . 34
A.6.2.6 Cable selection verification . 34
A.6.2.7 Connector verification . 34
A.6.2.8 Connection verification . 34
A.6.2.9 Terminator verification . 34
A.6.2.10 Coding and labelling verification . 34
A.6.2.11 Verification report . 35
A.6.3 Installation acceptance test . 35
A.6.3.1 General . 35
A.6.3.2 Acceptance test of Ethernet based cabling . 35
A.6.3.3 Acceptance test of non-Ethernet-based cabling . 35

– 4 – IEC 61784-5-6:2018 © IEC 2018
A.6.3.4 Specific requirements for wireless installation . 35
A.6.3.5 Acceptance test report . 35
A.7 Installation administration . 35
A.8 Installation maintenance and installation troubleshooting . 35
Annex B (normative) CPF 6 Ethernet network specific installation profile . 37
B.1 Installation profile scope . 37
B.2 Normative references . 37
B.3 Installation profile terms, definitions, and abbreviated terms . 38
B.3.1 Terms and definitions. 38
B.3.2 Abbreviated terms . 38
B.3.3 Conventions for installation profiles . 38
B.4 Installation planning . 38
B.4.1 General . 38
B.4.1.1 Objective . 38
B.4.1.2 Cabling in industrial premises . 38
B.4.1.3 The planning process . 38
B.4.1.4 Specific requirements for CPs . 38
B.4.1.5 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 38
B.4.2 Planning requirements . 38
B.4.2.1 Safety . 38
B.4.2.2 Security . 39
B.4.2.3 Environmental considerations and EMC . 39
B.4.2.4 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 39
B.4.3 Network capabilities . 39
B.4.3.1 Network topology . 39
B.4.3.2 Network characteristics. 40
B.4.4 Selection and use of cabling components . 42
B.4.4.1 Cable selection . 42
B.4.4.2 Connecting hardware selection . 44
B.4.4.3 Connections within a channel/permanent link . 47
B.4.4.4 Terminators . 47
B.4.4.5 Device location and connection . 48
B.4.4.6 Coding and labelling . 48
B.4.4.7 Earthing and bonding of equipment and devices and shielded cabling . 48
B.4.4.8 Storage and transportation of cables . 48
B.4.4.9 Routing of cables . 48
B.4.4.10 Separation of circuit . 48
B.4.4.11 Mechanical protection of cabling components . 48
B.4.4.12 Installation in special areas . 48
B.4.5 Cabling planning documentation . 48
B.4.6 Verification of cabling planning specification . 48
B.5 Installation implementation . 48
B.5.1 General requirements . 48
B.5.2 Cable installation . 48
B.5.2.1 General requirements for all cabling types . 48
B.5.2.2 Installation and routing . 49

B.5.2.3 Specific requirements for CPs . 49
B.5.2.4 Specific requirements for wireless installation . 50
B.5.2.5 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3 . 50
B.5.3 Connector installation . 50
B.5.3.1 Common description . 50
B.5.3.2 Shielded connectors . 50
B.5.3.3 Unshielded connectors . 50
B.5.3.4 Specific requirements for CPs . 50
B.5.3.5 Specific requirements for wireless installation . 50
B.5.3.6 Specific requirements for generic cabling in accordance with ISO/IEC

11801-3 . 50
B.5.4 Terminator installation . 50
B.5.5 Device installation . 50
B.5.6 Coding and labelling . 50
B.5.7 Earthing and bonding of equipment and devices and shield cabling . 50
B.5.8 As-implemented cabling documentation . 51
B.6 Installation verification and installation acceptance test . 51
B.6.1 General . 51
B.6.2 Installation verification . 51
B.6.3 Installation acceptance test . 51
B.7 Installation administration . 51
B.8 Installation maintenance and installation troubleshooting . 51
Bibliography . 52

Figure 1 – Standards relationships . 9
Figure A.1 – Type 8 network structure example . 17
Figure A.2 – Example of a Type 8 network configuration . 18
Figure A.3 – Sub-D connector pin assignment . 32
Figure A.4 – M23 circular connector pin assignment . 32
Figure A.5 – M12 circular connector pin assignment . 33
Figure A.6 – Terminal connector at the device . 33
Figure B.1 – Terminal connector at the device . 50

Table A.1 – Basic network characteristics for balanced cabling not based on Ethernet . 19
Table A.2 – Network characteristics for optical fibre cabling . 20
Table A.3 – Information relevant to balanced cable: fixed cables . 21
Table A.4 – Information relevant to balanced cable: cords . 22
Table A.5 – Remote bus fibre optic cable length . 24
Table A.6 – Connectors for copper cabling CPs not based on Ethernet . 25
Table A.7 – Optical fibre connecting hardware . 25
Table A.8 – Relationship between FOC and fibre types (Type 8 networks) . 26
Table A.9 – Colour code for balanced cables used by Type 8 networks . 27
Table A.10 – Parameters for balanced cables . 30
Table A.11 – Parameters for silica optical fibre cables . 30
Table A.12 – Parameters for POF optical fibre cables . 30

– 6 – IEC 61784-5-6:2018 © IEC 2018
Table A.13 – Parameters for hard clad silica optical fibre cables . 31
Table A.14 – Pin assignment of the terminal connector . 33
Table B.1 – Network characteristics for balanced cabling based on Ethernet . 40
Table B.2 – Network characteristics for optical fibre cabling . 41
Table B.3 – Information relevant to copper cable: fixed cables . 42
Table B.4 – Information relevant to copper cable: cords . 43
Table B.5 – Information relevant to optical fibre cables . 44
Table B.6 – Connectors for balanced cabling CPs based on Ethernet . 45
Table B.7 – Connectors for copper cabling CPs not based on Ethernet . 45
Table B.8 – Optical fibre connecting hardware . 46
Table B.9 – Relationship between FOC and fibre types (CP 6/2 Ethernet network) . 46
Table B.10 – Parameters for balanced cables . 48
Table B.11 – Parameters for silica optical fibre cables . 49
Table B.12 – Parameters for POF optical fibre cables . 49
Table B.13 – Parameters for hard clad silica optical fibre cables . 49

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
PROFILES –
Part 5-6: Installation of fieldbuses –
Installation profiles for CPF 6

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 decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 61784-5-6 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This fourth edition cancels and replaces the third edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with IEC 61918:2018;
b) addition of new connectors.
This document is to be used in conjunction with IEC 61918:2018.

– 8 – IEC 61784-5-6:2018 © IEC 2018
The text of this International Standard is based on the following documents:
FDIS Report on voting
65C/924/FDIS 65C/925/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 document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61784-5 series, published under the general title Industrial
communication networks – Profiles – Installation of fieldbuses, can be found on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related
to the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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.
INTRODUCTION
This International Standard is one of a series produced to facilitate the use of communication
networks in industrial control systems.
IEC 61918:2018 provides the common requirements for the installation of communication
networks in industrial control systems. This installation profile document provides the
installation profiles of the communication profiles (CP) of a specific communication profile
family (CPF) by stating which requirements of IEC 61918 fully apply and, where necessary, by
supplementing, modifying, or replacing the other requirements (see Figure 1).
For general background on fieldbuses, their profiles, and relationship between the installation
profiles specified in this document, see IEC 61158-1.
Each CP installation profile is specified in a separate annex of this document. Each annex is
structured exactly as the reference document IEC 61918 for the benefit of the persons
representing the roles in the fieldbus installation process as defined in IEC 61918 (planner,
installer, verification personnel, validation personnel, maintenance personnel, administration
personnel). By reading the installation profile in conjunction with IEC 61918, these persons
immediately know which requirements are common for the installation of all CPs and which
are modified or replaced. The conventions used to draft this document are defined in Clause 5.
The provision of the installation profiles in one document for each CPF (for example
IEC 61784-5-6 for CPF 6), allows readers to work with documents of a convenient size.

Figure 1 – Standards relationships

– 10 – IEC 61784-5-6:2018 © IEC 2018
INDUSTRIAL COMMUNICATION NETWORKS –
PROFILES –
Part 5-6: Installation of fieldbuses –
Installation profiles for CPF 6

1 Scope
This part of IEC 61784-5 specifies the installation profiles for CPF 6 (INTERBUS) .
The installation profiles are specified in the annexes. These annexes are read in conjunction
with IEC 61918:2018.
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.
IEC 61918:2018, Industrial communication networks – Installation of communication networks
in industrial premises
The normative references of IEC 61918:2018, Clause 2, apply.
NOTE For profile specific normative references, see Clauses A.2 and B.2.
3 Terms, definitions and abbreviated terms
For the purposes of this document, the terms, definitions and abbreviated terms given in
IEC 61918:2018, Clause 3, apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
NOTE For profile specific terms, definitions and abbreviated terms see Clauses A.3 and B.3.
4 CPF 6: Overview of installation profiles
CPF 6 consists of seven communication profiles (see IEC 61784-1:— for CP 6/1, CP 6/2,
CP 6/3, see IEC 61784-2:— for CP 6/4, CP 6/5, CP 6/6, see IEC 61784-3-6 for FSCP 6/7).
The CPF 6 Type 8 network (non-Ethernet-based) installation profile is specified in Annex A.
___________
INTERBUS is a trade name of INTERBUS Club, an independent organisation of users and vendors of
INTERBUS products. This information is given for the convenience of users of this document and does not
constitute an endorsement by IEC of the trademark holder or any of its products. Compliance to this profile
does not require use of the trade name INTERBUS. Use of the trade name INTERBUS requires permission of
the trade name holder.
The CPF 6 Ethernet network specific installation profile is specified in Annex B.
5 Installation profile conventions
The numbering of the clauses and subclauses in the annexes of this document corresponds to
the numbering of IEC 61918:2018 main clauses and subclauses.
The annex clauses and subclauses of this document supplement, modify, or replace the
respective clauses and subclauses in IEC 61918.
Where there is no corresponding subclause of IEC 61918 in the normative annexes in this
document, the subclause of IEC 61918 applies without modification.
The annex heading letter represents the installation profile assigned in Clause 4. The annex
(sub)clause numbering following the annex letter shall represent the corresponding
(sub)clause numbering of IEC 61918.
EXAMPLE “Subclause B.4.4” in IEC 61784-5-6 means that CP 6/2 specifies the subclause 4.4 of IEC 61918.
All main clauses of IEC 61918 are cited and apply in full unless otherwise stated in each
normative installation profile annex.
If all subclauses of a (sub)clause are omitted, then the corresponding IEC 61918 (sub)clause
applies.
If in a (sub)clause it is written “Not applicable”, then the corresponding IEC 61918 (sub)clause
does not apply.
If in a (sub)clause it is written “Addition:”, then the corresponding IEC 61918 (sub)clause
applies with the additions written in the profile.
If in a (sub)clause it is written “Replacement:”, then the text provided in the profile replaces
the text of the corresponding IEC 61918 (sub)clause.
NOTE A replacement can also comprise additions.
If in a (sub)clause it is written “Modification:”, then the corresponding IEC 61918 (sub)clause
applies with the modifications written in the profile.
If all (sub)clauses of a (sub)clause are omitted but in this (sub)clause it is written
“(Sub)clause x has addition:” (or “replacement:”) or “(Sub)clause x is not applicable.”, then
(sub)clause x becomes valid as declared and all the other corresponding
IEC 61918 (sub)clauses apply.
6 Conformance to installation profiles
Each installation profile within this document includes part of IEC 61918:2018. It may also
include defined additional specifications.
A statement of compliance to an installation profile of this document shall be stated as either
Compliance to IEC 61784-5-6:— for CP 6/m or
___________
In accordance with ISO/IEC Directives.
The date should not be used when the edition number is used.

– 12 – IEC 61784-5-6:2018 © IEC 2018
Compliance to IEC 61784-5-6 (Ed.4.0) for CP 6/m
where the name within the angle brackets < > is optional and the angle brackets are not to be
included. The m within CP 6/m shall be replaced by the profile number 1 to 2.
NOTE The name can be the name of the profile, for example INTERBUS.
If the name is a trade name then the permission of the trade name holder shall be required.
Product documents shall not include any conformity assessment aspects (including quality
management provisions), neither normative nor informative, other than provisions for product
testing (evaluation and examination).

Annex A
(normative)
CPF 6 Type 8 network specific installation profile
A.1 Installation profile scope
Addition:
This annex specifies the installation profile for CPF 6 Type 8 networks and the related
Communication Profiles:
• CP 6/1, CP 6/2, CP 6/3 – specified in IEC 61784-1;
• CP 6/4, CP 6/5, CP 6/6 – specified in IEC 61784-2;
• FSCP 6/7 – specified in IEC 61784-3-6.
A.2 Normative references
Addition:
IEC 60189-1:2007, Low-frequency cables and wires with PVC insulation and PVC sheath –
Part 1: General test and measuring methods
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures
IEC 61076-2-109 Connectors for electronic equipment – Product requirements –
Part 2-109: Circular connectors – Detail specification for connectors M 12 × 1 with screw-
locking, for data transmissions with frequencies up to 500 MHz
IEC 61076-3-123, Connectors for electronic equipment – Product requirements – Part 3-123:
Rectangular connectors – Detail specification for hybrid connectors for industrial
environments, for power supply and fibre optic data transmission, with push-pull locking
IEC 61156-1:2007, Multicore and symmetrical pair/quad cables for digital communications –
Part 1: Generic specification
IEC 61156-5, Multicore and symmetrical pair/quad cables for digital communications – Part 5:
Symmetrical pair/quad cables with transmission characteristics up to 600 MHz – Horizontal
floor wiring – Sectional specification
IEC 61754-24-21, Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces – Part 24-21: Type SC-RJ connectors with protective housings based on
IEC 61076-3-106, variant 06
IEC 61754-27, Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces – Part 27: Type M12-FO connector family
___________
Under preparation. Stage at the time of publication: IEC/CDV 61076-3-123:2017.

– 14 – IEC 61784-5-6:2018 © IEC 2018
A.3 Installation profile terms, definitions, and abbreviated terms
A.3.1 Terms and definitions
Addition:
A.3.1.87
bus coupler
device that divides the Type 8 network into segments by opening the ring and integrating
another ring at this point
A.3.1.88
local bus
ring segment of a Type 8 network with alternate media specifications, which is coupled to a
remote bus device via a bus coupler
A.3.1.89
local bus device
device that operates as a slave on a local bus
A.3.1.90
master
device that controls the data transfer on the Type 8 network and initiates the media access of
the slaves by sending messages and that constitutes the interface to the control system
A.3.1.91
remote bus
ring segment of a network
A.3.1.92
remote bus
device operating as a slave on a remote bus
A.3.1.93
remote bus link
connection of two remote bus devices
A.3.1.94
ring segment
one section of a Type 8 network
A.3.1.95
slave
device that accesses the medium only after it has been initiated by the preceding slave or
master
A.3.2 Abbreviated terms
Addition:
BC Bus coupler
COM Ground line
/DI Incoming interface: send data line –
Outgoing interface: receive data line –
DI
Incoming interface: send data line +
Outgoing interface: receive data line +
/DO Incoming interface: receive data line –
Outgoing interface: send data line -

DO
Incoming interface: receive data line +
Outgoing interface: send data line +
PELV Protective extra low voltage
POF Plastic optical fibre
SELV Safety extra low voltage
A.3.3 Conventions for installation profiles
Not applicable.
A.4 Installation planning
A.4.1 General
A.4.1.1 Objective
A.4.1.2 Cabling in industrial premises
A.4.1.3 The planning process
A.4.1.4 Specific requirements for CPs
Not applicable.
A.4.1.5 Specific requirements for generic cabling in accordance with
ISO/IEC 11801-3
Not applicable.
A.4.2 Planning requirements
A.4.2.1 Safety
A.4.2.1.1 General
A.4.2.1.2 Electrical safety
Addition:
The power distribution system shall comply with IEC 60364-1:2005, 312.2.1 TN-S systems, i.e.
earthed by bonding of enclosures with separated conductors for neutral (N) and protection
earth (PE). Otherwise there are additional efforts necessary to avoid currents on the shield,
i.e. an AC earthed system on one end in a network with balanced cables or a network built
with FO-cables. For networks built with OF-cables the power distribution system should
comply with IEC 60364-1:2005, 312.2.1 TN-S systems.
PELV is the default v
...