Notes on Ethernet components – plug connections

The connection equipment for FastEthernet must meet the electrical and mechanical requirements of EN50173 Class D. This ensures backward compatibility; higher class connection equipment can also be used for achieving Class D.
The plug components can be approved by the manufacturer according to the MICE classification as per EN50173-1, chapter 5 or appendix G for the ambient conditions specified therein.

The plug connection substantially affects the electrical characteristics of the transmission link, in particular the parameters screening effect, attenuation, crosstalk and return loss. For transmission link design, an insertion loss of 0.4 dB (EN50173-1, appendix A) is roughly assumed for a single plug connector.

The following mating faces are in use for Class D:

EN60607: "RJ45"

Notes on Ethernet components – plug connections 1:
Connector EN60603-7, field-configurable; left: only FastEthernet compatible, assignment 1-2-3-6; right: GBit compatible, fully assignable

A 4-core assignment according to TIA-568B is sufficient for the support of FastEthernet (100 Mbit/s).

EN61076-2-101: "M12"

The 4-pole pin assignment according to EN61076-2-101 supports only FastEthernet.

Notes on Ethernet components – plug connections 2:
Connector EN61076-2-101, type D

EN61076-2-101: M8

The 4-pole pin assignment according to EN61076-2-101 supports only FastEthernet.

Notes on Ethernet components – plug connections 3:
Connector EN61076-2-101, type D

Others

Connectors other than those above can be used. These must then meet the electrical and mechanical requirements according to EN50173-1:2007, Appendix D.

The installation profile for EtherCAT IEC61784-5-12 is to be observed.

Core assignment (according to IEC 61918, appendix H)

Connector pin assignment - WH=white, OG=orange, GN=green, BU=blue, BN=brown, YE=yellow

Signal

Function

RJ45

M12

M8

Cable colour as per TIA-568B

Cable colour as per EN61918

TD +

Transmit data +

1

1

1

WH/OG

YE

TD-

Transmit data -

2

3

4

OG

OG

RD+

Receive data +

3

2

2

WH/GN

WH

RD-

Receive data -

6

4

3

GN

BU

-

3rd pair +

4

-

-

BU

-

-

3rd pair -

5

-

-

WH/BU

-

-

4th pair +

7

-

-

WH/BN

-

-

4th pair -

8

-

-

BN

-

Screen

Screening

Housing

Housing

Housing

n.def.

n.def.

Screening effect

It must be ensured that the screening effect is continued at the transition from the cable material to the connector. Also, in the area of the connector/cable transition, the screening material (braid, foil) must join the body of the connector with a low impedance and a large surface area and must encompass the cable 360°.

The notes on screening and the instructions enclosed with the connectors are to be observed.