Ethercat Coupler Port Allocation; Fig. 16 Example Of An Ek1100 Ethercat Coupler With 3 Ports - Beckhoff EK18 Series Documentation

Product overview
4.2.4

EtherCAT coupler port allocation

According to the EtherCAT specification, an ESC (EtherCAT Slave Controller, hardware processing unit of
the EtherCAT protocol) can have 1 to 4 ports, which it controls itself. Via an open port it can handle outgoing
and incoming Ethernet traffic.
The direction of data flow in a fully wired EK1100 is shown in Fig. Internal and external port assignment for
Bus Coupler EK1100:
Fig. 16: Example of an EK1100 EtherCAT coupler with 3 ports
The port assignment in the case of the EK1101, EK1501 and EK1501-0010, EK1814 applies accordingly.
24 Version: 2.2 EK18xx