Recent Changes to the
Physical Layer (Chapter 8)
for DeviceNet and EtherNet/IP
Brad Woodman
Molex

Technical Trackwww.odva.org

AgendaIntroduction
DeviceNet Chapter 8 Changes• Cable profiles updated for cable Drop length with currentEtherNet/IP Chapter 8 Changes• Addition of M12-8 X-Coding connector• 1G Industrial cabling• Harmonizing with International standards• Chapter 8 new formatting with future data rates

Earthing(Grounding) & Bonding Technical
Guideline• Equipontential/mesh grounding vs. star grounding• Harmonizing with International standards

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2014 Industry Conference & 16th Annual Meeting
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DeviceNet Cable profiles
Drop current per cable length for Thick

Formula drop current graph and table• I=0.35V/[(Cable DCR * Length of Drop) + (Contact DCR* Number of contacts)]• Cable DCR @80°C = R0*[1 + α(T – T0)]
• R0 = 3.6 ohms/1000ft , DCR of copper at 20°C

• α = 0.00393/degrees C (coefficient for copper)• T = 80 (new temperature)• T0 = 20• Contact DCR = 0.001 ohms
• Number of contacts = 8 (4 connections with 2 contacts
for each connection)
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2014 Industry Conference & 16th Annual Meeting
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DeviceNet Cable profiles
Drop current per cable length for Thick

Drop Length inmeters (feet)
Maximum
Current in amps

Technical Track© 2014 ODVA, Inc.

0
3.0

0.3
(1)
3.0

0.9(3)
3.0

1.5
(5)
3.0

2.3(7.5)
3.0

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3.0(10)
3.0

4.6(15)3.0

6.1(20)
3.0

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DeviceNet Cable profiles
Drop current per cable length for Thin

Technical Track© 2014 ODVA, Inc.

Drop Length inmeters (feet)

00.3
(1)

0.9(3)

1.5(5)

2.3(7.5)

3.0(10)

4.6(15)

6.1(20)

Maximum Current
in amps

3.0

3.0

3.0

3.0

2.1

1.6

1.1

0.8

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EtherNet/IP M12-8 X-Coding
M12-8 X-Coding features

4-pair shielded or unshielded cables
Complaint to IEC 61076-2-109
Sealed to both IP65 and IP67 ingress ratings
Category 6A Connector performance to ISO/IEC
11801 & TIA-568 and IEC 60512-29-100
Accepted by both EtherNet/IP and PROFINETspecifications
Standardized in IEC 61918 and IEC 61784-5-x
seriesTechnical Track© 2014 ODVA, Inc.

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EtherNet/IP M12-8 X-Coding
M12-8 X-Coding features

Plug connector withmale pin contacts

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2014 Industry Conference & 16th Annual Meeting
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Jack connector withfemale socket contacts

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EtherNet/IP Adding 1G cabling
MICE EnvironmentsCommercial cabling (MICE 1)
Industrial cabling (MICE 2 and MICE 3)

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2014 Industry Conference & 16th Annual Meeting
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EtherNet/IP Adding 1G cabling
Concerns for industrial cabling

Noise coupling
Loss data packets, especially for Motion Control
Shielded vs. Unshielded cables

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2014 Industry Conference & 16th Annual Meeting
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EtherNet/IP - Reformatting
Layout and tables
ServiceData Rate
10BASE-T
100BASE-XPMDClause924100BASE-TX

251000BASE-X

1000BASE-T

PMA

PMD/MDI
Other relevant Clauses

14ANSI X3.263-1995
ISO/IEC 9314,
ANSI X3T12 (FDDI)ANSI X3.263-1995

3636

PMD ANSI X3.2301994 Clauses 6 and 7 ,Clause 66

4040

Auto
Negotiation

3728

Industrial EtherNet/IP Connector Specifications and Requirements
Specification

TypeElectricalTechnical Track© 2014 ODVA, Inc.

RJ-45-Shielded

RJ-45

M12-4 D-Coding

M12-8 X-Coding

Conductors

8 + 1 Shield

848

Insertion LossANSI/TIA-568-C.2
Category 5E

ANSI/TIA-568-C.2
Category 5E

IEC 61076-2-101

IEC 61076-2-109

RL

ANSI/TIA-568-C.2
Category 5E

ANSI/TIA-568-C.2
Category 5E

IEC 61076-2-101

IEC 61076-2-109

NEXT LossANSI/TIA-568-C.2
Category 5E

ANSI/TIA-568-C.2
Category 5E

IEC 61076-2-101

IEC 61076-2-109

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Harmonizing with standards
Standards with harmonizing activity
ISO/IEC JTC1/SC25/WG3IEC SC65C JWG10
IEC 48B WG3 & WG5
ANSI/TIA TR42.9

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2014 Industry Conference & 16th Annual Meeting
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Earthing (Grounding) & Bonding
Technical Guideline

Guide for all CIP Networks
Key definitions• Bonding: Act of connecting together exposed conductiveparts and extraneous conductive parts of apparatus, systems,
or installations that are at essentially the same potential.
• Earthing: (verb) often referred to as, “Grounding” in the US
influenced markets means to make an electrical connection
between a given point in a system or in an installation or inequipment and the local earth.
• Parallel Earthing Conductor or Potential Equalization
cable: a conductor connected in parallel with thescreens/shields of signal and/or data cables in order to limit
the current flowing through the screens.

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2014 Industry Conference & 16th Annual Meeting
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Earthing (Grounding) & Bonding
Equipotential/mesh bonding
network

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2014 Industry Conference & 16th Annual Meeting
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Earthing (Grounding) & Bonding
Star grounding

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2014 Industry Conference & 16th Annual Meeting
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Harmonizing with standards
Baseline standards

IEC 61918 Industrial communication networks–Installationof communication networks in industrial premises
IEC 61000-5-2 Electromagnetic compatibility (EMC)–Part 5:
Installation and mitigation guidelines – Section 2: Earthing
and cabling
IEC 60364-4-44 Low-voltage electrical installations– Part 444: Protection for safety – Protection against voltage
disturbances and electromagnetic disturbancesStandards with harmonizing activityISO/IEC JTC1/SC25/WG3IEC SC65C JWG10ANSI/TIA TR42.16

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2014 Industry Conference & 16th Annual Meeting
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Thank you
Any Questions ?

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2014 Industry Conference & 16th Annual Meeting
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