BECKHOFF PHY - Manual (Page 4)

Overview
Slave Controller – Application Note PHY Selection Guide 1
1 Overview
An EtherCAT Slave Controller (ESC) takes care of the EtherCAT communication as an interface between the
EtherCAT fieldbus (Ethernet) and the slave application. EtherCAT uses standard Fast Ethernet. Transmission
speed for EtherCAT is fixed to 100 Mbit/s with Full Duplex communication. EtherCAT Slave Controllers process
Ethernet frames on the fly.
This application note provides an overview of the requirements to Ethernet PHYs used for EtherCAT devices.
An example list of Ethernet PHYs currently expected to be suitable for EtherCAT is also provided.
This application note applies to the following Beckhoff EtherCAT Slave Controllers:
 ET1200-0003
 ET1100-0003
 EtherCAT IP Core for Altera ® /Xilinx ® FPGAs V3.0.2/V3.00c and later
 ESC10/20
Refer to the ESC data sheets for further information. The ESC data sheets are available from the Beckhoff
homepage (
http://www.beckhoff.com ).
DVI
IPC
.. .. DVI
IPC
.. .. DVI
IPC
.. ..
EtherCAT Segment (Slaves) Master
vom Master from Master
to Master
Figure 1: EtherCAT Segment