Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition

IEC 61158-2:2010(E) specifies the requirements for fieldbus component parts. It also specifies the media and network configuration requirements necessary to ensure agreed levels of: - data integrity before data-link layer error checking; - interoperability between devices at the physical layer. This fifth edition cancels and replaces the fourth edition published in 2007. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: - for Type 18, Table 157 reduced tolerance to 5%; - for Type 18, in 32.5.3.1 removed minimum cable length; - for Type 18, in 32.5.4. and R.2.2 cable reference removed; - for Type 18, Table 160 and 161 terminating resistor value changed to 680 Ohm.

Industrielle Kommunikationsnetze - Feldbusse - Teil 2: Spezifikation und Dienstfestlegungen des Physical Layer (Bitübertragungsschicht)

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 2: Spécification des couches physiques et définition des services

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 2. del: Specifikacija fizičnega nivoja in definicija opravil (IEC 61158-2:2010)

Ta del IEC 61158 določa zahteve za komponente procesnih vodil. Prav tako določa zahteve za medij in omrežno konfiguracijo, potrebne za zagotovitev dogovorjenih stopenj:
a) celovitosti podatkov pred preverjanjem napak plasti podatkovne povezave;
b) medobratovanje med napravami na fizični plasti.
Fizična plast procesnega vodila je v skladu s plastjo 1 od OSI 7-plastnega modela, kot je določeno z ISO 7498 z izjemo, da so v nekaterih primerih razmejevalniki okvirja v fizični plasti, medtem ko so za druge vrste v plasti podatkovnih povezav.

General Information

Status
Withdrawn
Publication Date
07-Oct-2010
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
6060 - Document made available
Completion Date
08-Oct-2010

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SLOVENSKI STANDARD
SIST EN 61158-2:2010
01-december-2010
1DGRPHãþD
SIST EN 61158-2:2008
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Industrial communication networks - Fieldbus specifications - Part 2: Physical layer

specification and service definition (IEC 61158-2:2010)

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 2:

Spécification des couches physiques et définition des services (IEC 61158-2:2010)

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 2:

Spécification des couches physiques et définition des services (CEI 61158-2:2010)

Ta slovenski standard je istoveten z: EN 61158-2:2010
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.10 )L]LþQLVORM Physical layer
35.110 Omreževanje Networking
SIST EN 61158-2:2010 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
---------------------- Page: 2 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
EUROPEAN STANDARD
EN 61158-2
NORME EUROPÉENNE
October 2010
EUROPÄISCHE NORM
ICS 25.040; 35.100; 35.240.50 Supersedes EN 61158-2:2008
English version
Industrial communication networks -
Fieldbus specifications -
Part 2: Physical layer specification and service definition
(IEC 61158-2:2010)
Réseaux de communication industriels - Industrielle Kommunikationsnetze -
Spécifications des bus de terrain - Feldbusse -
Partie 2: Spécification des couches Teil 2: Spezifikation
physiques et définition des services und Dienstfestlegungen des Physical
(CEI 61158-2:2010) Layer (Bitübertragungsschicht)
(IEC 61158-2:2010)

This European Standard was approved by CENELEC on 2010-09-01. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,

Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61158-2:2010 E
---------------------- Page: 3 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
EN 61158-2:2010 - 2 -
Foreword

The text of document 65C/598/FDIS, future edition 5 of IEC 61158-2, prepared by SC 65C, Industrial

networks, of IEC TC 65, Industrial-process measurement, control and automation, was submitted to the

IEC-CENELEC parallel vote and was approved by CENELEC as EN 61158-2 on 2010-09-01.

This European Standard supersedes EN 61158-2:2008.

This EN 61158-2:2010 includes the following significant technical changes with respect to

EN 61158-2:2008:
– for Type 18, Table 157 reduced tolerance to 5 %;
– for Type 18, in 32.5.3.1 removed minimum cable length;
– for Type 18, in 32.5.4. and R.2.2 cable reference removed;
– for Type 18, Table 160 and 161 terminating resistor value changed to 680 Ω.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent

rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 61158-2:2010 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60079-0 NOTE Harmonized as EN 60079-0.
IEC 60079-27 NOTE Harmonized as EN 60079-27.
IEC 60875-1 NOTE Harmonized as EN 60875-1.
IEC 60947-5-2 NOTE Harmonized as EN 60947-5-2.
IEC/TR 61158-1 NOTE Harmonized as CLC/TR 61158-1.
IEC 61158-4-1:2007 NOTE Harmonized as EN 61158-4-1:2008 (not modified).
IEC 61158-4-4:2007 NOTE Harmonized as EN 61158-4-4:2008 (not modified).
IEC 61158-4-7:2007 NOTE Harmonized as EN 61158-4-7:2008 (not modified).
IEC 61158-4-8:2007 NOTE Harmonized as EN 61158-4-8:2008 (not modified).
IEC 61158-4-16:2007 NOTE Harmonized as EN 61158-4-16:2008 (not modified).
IEC 61300-3-4 NOTE Harmonized as EN 61300-3-4.
---------------------- Page: 4 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
- 3 - EN 61158-2:2010
IEC 61491 NOTE Harmonized as EN 61491.
IEC 61596 NOTE Harmonized as EN 61596.
IEC 61784-1 NOTE Harmonized as EN 61784-1.
__________
---------------------- Page: 5 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
EN 61158-2:2010 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60050-731 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 731: Optical fibre communication
IEC 60079-11 - Explosive atmospheres - EN 60079-11 -
Part 11: Equipment protection by intrinsic
safety "i"
IEC 60079-14 2002 Electrical apparatus for explosive gas EN 60079-14 2003
atmospheres -
Part 14: Electrical installations in hazardous
areas (other than mines)
IEC 60079-25 - Explosive atmospheres - EN 60079-25 -
Part 25: Intrinsically safe electrical systems
IEC 60169-17 1980 Radio-frequency connectors - - -
Part 17: R.F. coaxial connectors with inner
diameter of outer conductor 6,5mm (0,256 in)
with screw coupling - Characteristic
impedance 50 ohms (type TNC)
IEC 60189-1 2007 Low-frequency cables and wires with PVC - -
insulation and PVC sheath -
Part 1: General test and measuring methods
IEC 60255-22-1 1988 Electrical relays - - -
(mod) Part 22: Electrical disturbance tests for
measuring relays and protection equipment -
Section 1: 1 MHz burst disturbance tests
IEC 60364-4-41 - Low-voltage electrical installations - HD 60364-4-41 -
(mod) Part 4-41: Protection for safety - Protection
against electric shock
IEC 60364-5-54 - Electrical installations of buildings - HD 60364-5-54 -
(mod) Part 5-54: Selection and erection of electrical
equipment - Earthing arrangements,
protective conductors and protective bonding
conductors
IEC 60529 - Degrees of protection provided by enclosures - -
(IP Code)

EN 60079-14 is superseded by EN 60079-14:2008, which is based on IEC 60079-14:2007.

---------------------- Page: 6 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
- 5 - EN 61158-2:2010
Publication Year Title EN/HD Year
IEC 60603-7-4 - Connectors for electronic equipment - EN 60603-7-4 -
Part 7-4: Detail specification for 8-way,
unshielded, free and fixed connectors, for data
transmissions with frequencies up to 250 MHz
IEC 60760 - Flat, quick-connect terminations - -
IEC 60793 Series Optical fibres - -
IEC 60794-1-2 2003 Optical fibre cables - EN 60794-1-2 2003
Part 1-2: Generic specification - Basic optical
cable test procedures
IEC 60807-3 - Rectangular connectors for frequencies below - -
3 MHz -
Part 3: Detail specification for a range of
connectors with trapezoidal shaped metal
shells and round contacts - Removable crimp
types with closed crimp barrels, rear
insertion/rear extraction
IEC 60874-10-1 - Connectors for optical fibres and cables - - -
Part 10-1: Detail specification for fibre optic
connector type BFOC/2,5 terminated to
multimode fibre type A1
IEC 61000-4-2 - Electromagnetic compatibility (EMC) - EN 61000-4-2 -
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test
IEC 61000-4-3 - Electromagnetic compatibility (EMC) - EN 61000-4-3 -
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 - Electromagnetic compatibility (EMC) - EN 61000-4-4 -
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61131-2 - Programmable controllers - EN 61131-2 -
Part 2: Equipment requirements and tests
IEC 61156-1 2007 Multicore and symmetrical pair/quad cables - -
for digital communications -
Part 1: Generic specification
IEC 61158-4-2 - Industrial communication networks - EN 61158-4-2 -
Fieldbus specifications -
Part 4-2: Data-link layer protocol
specification - Type 2 elements
IEC 61158-4-3 2010 Industrial communication networks - - -
Fieldbus specifications -
Part 4-3: Data-link layer protocol
specification - Type 3 elements
IEC 61169-8 2007 Radio-frequency connectors - EN 61169-8 2007
Part 8: Sectional specification - RF coaxial
connectors with inner diameter of outer
conductor 6,5 mm (0,256 in) with bayonet lock
- Characteristics impedance 50 ohms (type
BNC)
IEC 61754-2 - Fibre optic connector interfaces - EN 61754-2 -
Part 2: Type BFOC/2,5 connector family
---------------------- Page: 7 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
EN 61158-2:2010 - 6 -
Publication Year Title EN/HD Year
IEC 61754-13 - Fibre optic connector interfaces - EN 61754-13 -
Part 13: Type FC-PC connector
IEC 61754-22 - Fibre optic connector interfaces - EN 61754-22 -
Part 22: Type F-SMA connector family
ISO/IEC 7498 Series Information technology - Open Systems - -
Interconnection - Basic Reference Model: The
Basic Model
ISO/IEC 8482 - Information technology - - -
Telecommunications and information
exchange between systems - Twisted pair
multipoint interconnections
ISO/IEC 8802-3 - Information technology - Telecommunications - -
and information exchange between systems -
Local and metropolitan area networks -
Specific requirements -
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method
and physical layer specifications
ISO/IEC 9314-1 - Information Processing Systems - Fibre - -
distributed data interface (FDDI) -
Part 1: Token Ring physical layer protocol
(PHY)
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic reference model -
Conventions for the definition of OSI services
ANSI TIA/EIA-232-F - Interface between data terminal equipment - -
and data circuit - Terminating equipment
employing serial binary data interchange
ANSI TIA/EIA-422-B - Electrical characteristics of balanced voltage - -
digital interface circuits
ANSI TIA/EIA-485-A - Electrical Characteristics of Generators and - -
Receivers for Use in Balanced Digital
Multipoint Systems
ANSI TIA/EIA-644-A - Electrical Characteristics of Low Voltage - -
Differential Signaling (LVDS) Interface Circuits
---------------------- Page: 8 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
IEC 61158-2
Edition 5.0 2010-07
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 2: Physical layer specification and service definition
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
ICS, 25.040, 35.100, 35.240.50 ISBN 978-2-88912-051-2
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 9 ----------------------
SIST EN 61158-2:2010SIST EN 61158-2:2010
– 2 – 61158-2 © IEC:2010(E)
CONTENTS

FOREWORD.........................................................................................................................14

0 Introduction ....................................................................................................................16

1 Scope.............................................................................................................................20

2 Normative references .....................................................................................................20

3 Terms and definitions .....................................................................................................22

4 Symbols and abbreviations.............................................................................................45

5 DLL – PhL interface........................................................................................................56

6 Systems management – PhL interface............................................................................77

7 DCE independent sublayer (DIS) ....................................................................................91

8 DTE – DCE interface and MIS-specific functions ............................................................93

9 Medium dependent sublayer (MDS) ..............................................................................114

10 MDS – MAU interface ...................................................................................................135

11 Types 1 and 7: Medium attachment unit: voltage mode, linear-bus-topology 150 Ω

twisted-pair wire medium ..............................................................................................143

12 Types 1 and 3: Medium attachment unit: 31,25 kbit/s, voltage-mode with low-power

option, bus- and tree-topology, 100 Ω wire medium ......................................................158

13 Type 1: Medium attachment unit: current mode, twisted-pair wire medium.................... 175

14 Type 1: Medium attachment unit: current mode (1 A), twisted-pair wire medium ..........185

15 Types 1 and 7: Medium attachment unit: dual-fiber optical media ................................. 194

16 Type 1: Medium attachment unit: 31,25 kbit/s, single-fiber optical medium ................... 201

17 Type 1: Medium attachment unit: radio signaling ..........................................................204

18 Type 2: Medium attachment unit: 5 Mbit/s, voltage-mode, coaxial wire medium ........... 214

19 Type 2: Medium attachment unit: 5 Mbit/s, optical medium ........................................... 226

20 Type 2: Medium attachment unit: network access port (NAP) ....................................... 231

21 Type 3: Medium attachment unit: synchronous transmission, 31,25 kbit/s, voltage

mode, wire medium ......................................................................................................234

22 Type 3: Medium attachment unit: asynchronous transmission, wire medium ................. 251

23 Type 3: Medium attachment unit: asynchronous transmission, optical medium ............268

24 Type 4: Medium attachment unit: RS-485 .....................................................................277

25 Type 4: Medium attachment unit: RS-232 .....................................................................279

26 Type 6: This clause has been removed.........................................................................280

27 Type 8: Medium attachment unit: twisted-pair wire medium .......................................... 280

28 Type 8: Medium attachment unit: optical media ............................................................285

29 Type 12: Medium attachment unit: electrical medium.................................................... 292

30 Type 16: Medium attachment unit: optical fiber medium at 2, 4, 8 and 16 Mbit/s ..........294

31 Type 18: Medium attachment unit: basic medium..........................................................307

32 Type 18: Medium attachment unit: powered medium.....................................................311

Annex A (normative) Type 1: Connector specification ........................................................320

Annex B (informative) Types 1 and 3: Cable specifications and trunk and spur lengths

for the 31,25 kbit/s voltage-mode MAU ...............................................................................328

Annex C (informative) Types 1 and 7: Optical passive stars............................................... 330

Annex D (informative) Types 1 and 7: Star topology ..........................................................331

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SIST EN 61158-2:2010SIST EN 61158-2:2010
61158-2 © IEC:2010(E) – 3 –

Annex E (informative) Type 1: Alternate fibers ...................................................................335

Annex F (normative) Type 2: Connector specification ........................................................ 336

Annex G (normative) Type 2: Repeater machine sublayers (RM, RRM) and redundant

PhLs ...................................................................................................................................339

Annex H (informative) Type 2: Reference design examples................................................350

Annex I (normative) Type 3: Connector specification..........................................................356

Annex J (normative) Type 3: Redundancy of PhL and medium........................................... 363

Annex K (normative) Type 3: Optical network topology ......................................................364

Annex L (informative) Type 3: Reference design examples for asynchronous

transmission, wire medium, intrinsically safe......................................................................373

Annex M (normative) Type 8: Connector specification........................................................375

Annex N (normative) Type 16: Connector specification ...................................................... 380

Annex O (normative) Type 16: Optical network topology .................................................... 381

Annex P (informative) Type 16: Reference design example................................................ 386

Annex Q (normative) Type 18: Connector specification ...................................................... 390

Annex R (normative) Type 18: Media cable specifications.................................................. 395

Bibliography........................................................................................................................399

Figure 1 – General model of physical layer ...........................................................................17

Figure 2 – Mapping between data units across the DLL – PhL interface................................57

Figure 3 – Data service for asynchronous transmission.........................................................62

Figure 4 – Interactions for a data sequence of a master: identification cycle .........................67

Figure 5 – Interactions for a data sequence of a master: data cycle ......................................68

Figure 6 – Interactions for a data sequence of a slave: identification cycle............................69

Figure 7 – Interactions for a data sequence of a slave: data cycle ........................................70

Figure 8 – Interactions for a check sequence of a master .....................................................71

Figure 9 – Interactions for a check sequence of a slave........................................................72

Figure 10 – Reset, Set-value, Get-value ...............................................................................81

Figure 11 – Event service .....................................................................................................81

Figure 12 – Interface between PhL and PNM1 in the layer model..........................................86

Figure 13 – Reset, Set-value, Get-value PhL services ..........................................................87

Figure 14 – Event PhL service ..............................................................................................87

Figure 15 – Allocation of the interface number ......................................................................88

Figure 16 – Configuration of a master ...................................................................................92

Figure 17 – Configuration of a slave with an alternative type of transmission ........................93

Figure 18 – Configuration of a bus coupler with an alternative type of transmission ..............93

Figure 19 – DTE/DCE sequencing machines.........................................................................98

Figure 20 – State transitions with the ID cycle request service............................................ 107

Figure 21 – MIS-MDS interface: identification cycle request service.................................... 108

Figure 22 – MIS-MDS interface: identification cycle request service.................................... 109

Figure 23 – State transitions with the data cycle request service ........................................ 109

Figure 24 – MIS-MDS interface: data cycle request service ................................................ 110

Figure 25 – State transitions with the data sequence classification service .........................110

Figure 26 – Protocol machine for the message transmission service................................... 111

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SIST EN 61158-2:2010SIST EN 61158-2:2010
– 4 – 61158-2 © IEC:2010(E)

Figure 27 – Protocol machine for the data sequence identification service .......................... 112

Figure 28 – Protocol machine for the message receipt service............................................ 113

Figure 29 – Protocol data unit (PhPDU) ..............................................................................114

Figure 30 – PhSDU encoding and decoding ........................................................................115

Figure 31 – Manchester encoding rules ..............................................................................115

Figure 32 – Preamble and delimiters...................................................................................117

Figure 33 – Manchester coded symbols ..............................................................................118

Figure 34 – PhPDU format, half duplex ...............................................................................119

Figure 35 – PhPDU format, full duplex ................................................................................121

Figure 36 – Data sequence PhPDU.....................................................................................125

Figure 37 – Structure of the header in a data sequence PhPDU.......................................... 125

Figure 38 – Check sequence PhPDU ..................................................................................126

Figure 39 – Structure of a headers in a check sequence PhPDU......................................... 126

Figure 40 – Structure of the status PhPDU..........................................................................127

Figure 41 – Structure of the header in a status PhPDU ....................................................... 127

Figure 42 – Structure of the medium activity status PhPDU ................................................128

Figure 43 – Structure of the header in a medium activity status PhPDU .............................. 128

Figure 44 – Reset PhPDU...................................................................................................129

Figure 45 – Configuration of a master .................................................................................130

Figure 46 – Configuration of a slave ...................................................................................130

Figure 47 – Configuration of a bus coupler..........................................................................130

Figure 48 – Protocol data unit .............................................................................................131

Figure 49 – PhSDU encoding and decoding ........................................................................131

Figure 50 – Manchester encoding rules ..............................................................................131

Figure 51 – Example of an NRZI-coded signal ....................................................................134

Figure 52 – Fill signal .........................................................................................................134

Figure 53 – Jitter tolerance .................................................................................................141

Figure 54 – Transmit circuit test configuration.....................................................................147

Figure 55 – Output waveform..............................................................................................148

Figure 56 – Transmitted and received bit cell jitter (zero crossing point deviation) .............. 149

Figure 57 – Signal polarity ..................................................................................................150

Figure 58 – Receiver sensitivity and noise rejection............................................................151

Figure 59 – Power supply ripple and noise..........................................................................154

Figure 60 – Fieldbus coupler...............................................................................................156

Figure 61 – Transition from receiving to transmitting...........................................................163

Figure 62 – Power supply ripple and noise..........................................................................167

Figure 63 – Test circuit for single-output power supplies.....................................................168

Figure 64 – Test circuit for power distribution through an IS barrier ....................................169

Figure 65 – Test circuit for multiple output supplies with signal coupling .............................170

Figure 66 – Fieldbus coupler...............................................................................................172

Figure 67 – Protection resistors ..........................................................................................172

Figure 68 – Test configuration for current-mode MAU .........................................................178

Figure 69 – Transmitted and received bit cell jitter (zero crossing point deviation) .............. 179

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SIST EN 61158-2:2010SIST EN 61158-2:2010
61158-2 © IEC:2010(E) – 5 –

Figure 70 – Noise test circuit for current-mode MAU ...........................................................181

Figure 71 – Transmitted and received bit cell jitter (zero crossing point deviation) .............. 189

Figure 72 – Power supply harmonic distortion and noise.....................................................192

Figure 73 – Optical wave shape template............................................................................197

Figure 74 – Cellular radio topology and reuse of frequencies ..............................................208

Figure 75 – Radio segment between wired segments topology ........................................... 209

Figure 76 – Mixed wired and radio medium fieldbus topology..............................................210

Figure 77 – Components of 5 Mbit/s, voltage-mode, coaxial wire PhL variant...................... 215

Figure 78 – Coaxial wire MAU block diagram ......................................................................215

Figure 79 – Coaxial wire MAU transmitter ...........................................................................216

Figure 80 – Coaxial wire MAU receiver operation................................................................217

Figure 81 – Coaxial wire MAU transmit mask ......................................................................218

Figure 82 – Coaxial wire MAU receive mask .......................................................................219

Figure 83 – Transformer symbol .........................................................................................220

Figure 84 – 5 Mbit/
...

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