EJ2502 - 2-channel pulse width output module 24 V DC

EtherCAT devices - cabling - wired

The cable length between two EtherCAT devices must not exceed 100 m. This results from the FastEthernet technology, which, above all for reasons of signal attenuation over the length of the cable, allows a maximum link length of 5 + 90 + 5 m if cables with appropriate properties are used. See also the Design recommendations for the infrastructure for EtherCAT/Ethernet.

 

Cables and connectors

For connecting EtherCAT devices only Ethernet connections (cables + plugs) that meet the requirements of at least category 5 (CAt5) according to EN 50173 or ISO/IEC 11801 should be used. EtherCAT uses 4 wires for signal transfer.

EtherCAT uses RJ45 plug connectors, for example. The pin assignment is compatible with the Ethernet standard (ISO/IEC 8802-3).

Pin
Color of conductor
Signal
Description
1
yellow
TD +
Transmission Data +
2
orange
TD -
Transmission Data -
3
white
RD +
Receiver Data +
6
blue
RD -
Receiver Data -

Due to automatic cable detection (auto-crossing) symmetric (1:1) or cross-over cables can be used between EtherCAT devices from Beckhoff.

 
Recommended cables
Suitable cables for the connection of EtherCAT devices can be found on the Beckhoff website!