Question: what is the difference between ethernet and ethercat?
Answer: Like EtherNet/IP, EtherCAT is built on the Ethernet physical layer. But instead of using TCP/IP for transport and routing of messages, EtherCAT uses a “processing-on-the-fly” (also referred to as “communicating-on-the-fly”) approach. ... With EtherCAT, a telegram is sent from the master to all the slaves (nodes).