EtherCAT
Introduction
Links
https://www.ethercat.org/default.htm https://www.ethercat.org/download/documents/EtherCAT_EAP_EN.pdf https://www.ethercat.org/pdf/english/EtherCAT_Introduction_0905.pdf https://download.beckhoff.com/download/document/io/ethercat-terminals/ethercatsystem_en.pdf https://www.megatech.ro/doc/699/FZM1%20EtherCAT%20Communications%20Manual%20EN.pdf