PoE, PoE++, PoDL - Enhancements to IEEE 802.3
Bob Lounsbury
Principal Engineer, Rockwell Automation
Brad Woodman
Engineering Manager, Molex Inc.

Presented at the ODVA2017 Industry Conference & 18th Annual Meeting
February 21-23, 2017
Palm Harbor, FL, USA
Abstract
The IOT is exploding with far reaching applications such as Automotive, Home Automation, Building
Automation, and Machine to Machine. Ethernet has become the universal communications network
helping to drive this technology.
This paper will look at the current status of the cabling standards such as IEC/SC65C/JWG10,
ISO/IECJTC1/SC25/WG3 and ANSI TIA/TR42. In addition, this paper will focus on the status of IEEE
802.3 adaptions of standard Ethernet and the opportunities that it presents to ODVA. IEEE 802.3
committees recently published a higher level PoE (PoE++) and Power over Data link (PoDL). These new
powered enhancements can provide an attractive solution for powering a range of small devices up tolarger IO devices. PoE++ is attractive for Industrial as it potentially can deliver some 90+ watts to thePowered Device (PD). Even more exciting are the number of newly proposed high speed single pair
Ethernet adaptions being defined. These new adaptions will simplify the wiring and reduce space needed
for the cabling in industrial installations.
The national and international cabling standards are already actively engaged with IEEE 802.3 working
groups helping to define the cabling requirements for these new emerging networks. This paper will
discuss the new industrial channel definitions (E2E Links) being defined by ISO/IEC that promise to help
our customers successfully install and test their cabling.

Keywords
Physical Layers, Ethernet, IEC, ISO/IEC, TIA, PoE, PoE++, PoDL, E2E Links, MICE, Automation Island

SummaryStandardization of cabling systems for communications networks has been ongoing since the early 90s.
Since the initial standardization of industrial cabling systems for ODVA there have been many new highperformance components and enhancements proposed. The standards organizations continue to work toprovide standardization of these new components and systems. There are several national andinternational cabling standards that have a direct impact on networks throughout the world. Thesestandards are either based on ODVA network standards and/or are the foundation for the ODVA
networks. For example, Industrial Ethernet was first defined in ODVA and was based on TIA cabling
standards. Subsequent releases of the TIA cabling standard included a variant of the ODVA industrial
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Ethernet standard. Figure 1 shows a relational map of the national and international standards
organizations. The work within the individual standards committees is precipitated by a cause and effectrelationship of one or more standards or consortia. Developments within any one of these standards
bodies can cause ripple effect for the other standards. An abstract example is a request for a new
Ethernet channel to be created in IEC/SC65C/JWG10 that creates work for ISO/IEC/JTC1/WG3 andripples to ODVA and TIA. The originating request could come from anyone of the 21+ consortia aroundthe world.
This Presentation will focus on the current state of these standards and bring the audience up todate on how they affect ODVA. In Figure 1 below you note that the standards committees are tightly
linked and work together to create a complete system. Most of the connections are through Experts andLiaisons working between the committees. Figure 1 starts with the component definitions on the left side
providing technology to the cabling committees in the middle and then the installation committees on theright. Through ODVA members, ODVA provides input to the national and international standards
committees.
Figure 1 The interconnection of Standards Bodies

Liaision

Vendor Participation

ANSI/TR42
EXPERT
VIA USTAG

IEC46CIEC 48B
IEC 86EXPERT
VIA USTAG2017 ODVA Industry Conference

ISO/IEC/JTC1/SC25/WG3
EXPERT
VIA USTAG

2

MOU

IEC/SC65C/MT9
IEC/SC65C/JWG10EXPERT
VIA USTAG©2017 ODVA, Inc.

The root of many of the industrial Ethernet enhancements comes from the enabling work of IEEE 802.3.
The cabling standards work together with IEEE802.3 and with other national and international cabling
standards to publish a comprehensive set of standards taking the audience from the design and planningphase to the installation and verification/certification phase of a network infrastructure. Figure 2 below
shows how the standards documents are coupled together in a similarly to figure 1.
Figure 2 The interconnection of Standards documents

Areas of Coverage

Network Design

Planning and Installation

IEEE 802.3

OfficePremises

ISO/IEC 11801

Generic
Cabling

ISO/IEC
14763-2
ISO/IEC 24702

Between and in
Automation
Islands

IEC 61918(common requirements)

Industrial Premises
Automation
Specific Cabling
Between and in
Automation
Islands

IEC 61158
Series and IEC
61784-1,2

IEC 61784-5-X
Installation profiles(Selections + Add /Replace /Modifications)

TIA 568
seriesTIA 1005

EtherNet/IPTM

ODVA

2017 ODVA Industry Conference3

DeviceNetTM, EtherNet/IPTM
and ControlNetTM©2017 ODVA, Inc.

Using the well-used adage “Ethernet to the edge” we find that there are many changes to the standards.
For example, adding 1000Base-T applications to industrial has caused new connectors to emerge (M12-8
X- coding). We will see new cables emerging in support of industrial 1000Base-T as well.

Over the past 15 years, these standards have continued to evolve and expand. In the
recent two years IEEE 802.3 have added two new Ethernet networks/applications and arein the process of adding two new Ethernet networks/applications. These new networks are
aimed at expanding Ethernet into new spaces and applications. For
example, one of the most exciting applications are three, unshielded orshielded single pair physical layers, 1000Mb, 100Mb and 10 Mb.
1000BaseT1
802.3bp
IEEE 802.3bp (1000BaseT1) was published June, 2016. 1000Mb/s
100BaseT1
PoDL
over a single pair cable either shielded or unshielded cable. 802.3bp
802.3bw
802.3bu
has two different lengths and environments. Link segment type A isreferenced as Automotive and total length is 15 meters. Link segment
type B is referenced as Industrial and the total length is 40 meters.
10BaseT1802.3bp will require a new PHY for the physical layer of the OSI model.
802.3IEEE 802.3bw (100BaseT1) was published October, 2015. 100Mb/s
over a single pair cable either shielded or unshielded cable. 802.3bw
was developed for both automotive and industrial environments. Overall length up to 15 meters.
802.3bw will require a new PHY for the physical layer of the OSI model.
IEEE 802.3cg (10BaseT1) is looking to be published late 2018. IEEE 802.3cg is for the 10Mb and will
focus on industrial and building automation as their primary customers. This network has the potential ofproviding channel lengths of 1000 meters (10X that of any other IEEE defined Ethernet application).
802.3cg will require a new PHY for the physical layer of the OSI model. Allowing up to 10 inline
connectors for the 1000 meters.
All three new applications have the potential to provide power to the communications channel to thedevice. IEEE 802.3bu Power over Data Link (PoDL) was published October, 2016. IEEE 802.3bu
defines the power insertion, detection, and extraction scheme to serve all three of the single pairapplications. The detection methods of voltage/current configurations used for 2 and 4 pair Ethernet
networks will be used in these three applications with some modification to the protocol.
The three single pair networks fit well with the direction of industrial Ethernet in that they will open doors
to sensor/actuator level Ethernet enabled devices. As copper costs continue to fluctuate in the market
place the need to reduce copper content in the cabling will become more important. In addition as theneed to provide smaller devices increases, reduced connector and PHY designs can help with PCB
space. The estimated PCB board space savings of a single pair Physical Layer is about 55%.
So far, I have focused on the single pair applications.
However, there is one other application that is worth mentioning that has future use in industrial, is therecently published IEEE 802.3bz, September 2016. As part of the long term migration strategy 2.5G and
5G physical layers might have a place in industrial. The bandwidth needs of industrial still do not matchthe aggregate needs of a campus sized back bone. However, there are two factors to consider for the
future, high bandwidth devices such as vision and the migration of devices from non-Ethernet based
networks onto the industrial Ethernet control network. This migration may create a need for a midbandwidth backbone.
Why 2.5/5G over 10G, the answer is in cost and power requirements. While 10G is becoming more
popular, it comes at a high cost and high power needs. In our harsh environments power is heat.

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I have already discussed the enhancement in IEEE 802.3. Now I will focus on theenhancements to ISO/IEC/JTC1/SC25C/WG3. This committee is responsible for theinternational standardization of generic cabling. The well-known standard, ISO/IEC
11801 is currently be redrafted as a comprehensive standard in 6 initial parts. The important highlights ofthis work is the incorporation of the industrial standard ISO/IEC 24702: 2006 in to part 3 of
ISO/IEC11801. The MICE concept, originally a Technical Report (ISO/IEC TR29106:2007) will be
integrated into ISO/IEC/11801. This is very importantas this takes the informative nature of the MICE
ISO/IEC 24702
concept and makes it normative. In a parallel
Industrial
development is the creation of a new channel called
ISO/IEC 11801“End 2 End Link”. This new channel has several
reference implementations that are very similar to a
ISO/IECTR 11801-9902
normal channel of 1 to 4 connections. However, theTR29106 (MICE)
End-2-End Link
main difference is that it includes the performance ofthe two end plugs of the channel. This new channel
came at the request of the industrial installation committee within IEC/SC65C/JWG10. Here we saw aneed to help the customers identify potential connection installation issues at the two ends of a channel.
Primarily to the benefit of our industrial customers who choose to build their systems “in place” throughthe use of field installable connector options. The approach is to define a whole set of new limit lines that
include the performance of the connections at the end of the channel in the definition and test limits.
Following the final release, it is expected that field testers will have the ability to measure and detect
performance problems up to the customer equipment interfaces. The estimated release time for both
ISO/IEC11801 and TR 11801-9902 is late 2017. There are discussions within the committee about
including the End-2-End Link Technical Report (ISO/IEC 11801-9902) into the release of ISO/IEC 11801.

The current stability date of the installation standards is 2018. That seems a long way off,
but the work has already begun to create the new editions of the standards. This collectionof installation standards consists of one umbrella
IEC48BIEC 61076-2-109
standard, IEC 61918 and 21 consortia standards (profiles) IEC
M12-8 X Code61784-5-n (n = 1 to 21. Each consortia have its own profile
IEC 61918(common requirements)
number. For example, ODVA networks are found in IEC 61784-5-2.
ISO/IEC E2E Links
Due to the expansion of Ethernet, the national and international
standards and the set of installation standards must be updated.
IEC 61784-5-X
IEC 61784-5-20
Installation profiles
Most of the profiles are at edition 2 revision level and will be reIEC 61784-5-21
released at edition 3 in 2018. This year two new Ethernet based
1 Gigabit Cablingindustrial profiles were added. The 2018 release will include theRequirements
End-2-End Link definitions and new connectors supporting 1gigabit
sealed connectivity. In addition, it expected that the performance requirements of 1gigabit channels will
be included. This input will come from TIA and ODVA and is based on research performed on 1gigabit
channels in high noise environments.

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ANSI/TIA is a national standardization committee consisting of many sub groups. Within the
sub group 42 there are approximately 16 subcommittees.
1 Gigabit Cabling
Requirements
Subcommittee 42.9 is responsible for publishing the industrial
cabling standard. The current revision level of this standard is
ANSI/TIA 1005-A. The most recent addition to this standard was
ISO/IEC E2E Links
the M12-8 X-coding sealed connector for harsh areas supporting
data rates up to 1 gigabits. Currently there is a void in the area ofIEEE 802.3bp
TIA 1005A
1000Base-T1
cable specifications to support 1 gigabit channels. A draft
addendum is currently being reviewed for these new cable
IEEE 802.3bw
specifications. Another draft addendum that TIA 42.9 is reviewing
100BaseT1
is for the requirements for incorporating of IEEE 802.3bp in theindustrial environment that includes connector requirements. In
IEEE 802.3
10Base-T1
addition, it is expected that future releases of this standard will
include End-2-End Link definitions defined by ISO/IEC/JTC1/SC25C/WG3.

With the enhancement of Ethernet networks, EtherNet/IP can use these newtechnologies to reduce size, cost while making it easier for the end customer to deploy. A task group of
EtherNet/IP Physical Layer SIG have completed a series of electrical
1 Gigabit Cabling
performance tests of both UTP and STP cables for 1G. This task
Requirements
group is currently working on compiling all the test results anddrafting up the minimum electrical performance for TCL, ELTCTL,
ISO/IEC E2E Links
and coupling attenuation for cabling in an E3 environment. TheseIEEE 802.3bp
new electrical performance requirements for 1 G cabling will be
1000Base-T1
incorporated into Chapter 8.
By the publication of this paper, the SIG should have completed the rewrite/reorganization of Chapter 8,
which will allow easy incorporation of new network applications such as 1G for industrial copper in tables
and sections of Chapter 8. Chapter 8 will have a section for E2E, which will be referencing End-2-End
Link Technical Report (ISO/IEC 11801-9902). The SIG will monitor the efforts from TR42.9 on theircreation of a cabling standard for IEEE 802.3bp for both the connector and cable requirements. Uponcompletion of the TR42.9 standards, this SIG will review and incorporate the requirements for IEEE
802.3bp into Chapter 8. The SIG will be creating a new task group for updating the current planning andinstall manual for EtherNet/IP to incorporate all the additions and changes from the updated Chapter 8.
Once this planning and install manual is updated and released, the SIG will forward this information to
IEC/SC65C/JWG10 to be incorporated into IEC 61784-5-2.

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