For further information on EtherCAT, refer to the EtherCAT specifications, available from the EtherCAT Technology Group (ETG, www.ethercat.org).
Refer to the IEC standard “Digital data communications for measurement and control – Fieldbus for use in industrial control systems”, IEC 61158 Type 12: EtherCAT, available from the IEC (www.iec.ch).
Documentation on Beckhoff Automation ESC are available at the Beckhoff website
(www.beckhoff.com), for example, data sheets, application notes, and
ASIC pinout configuration tools.