EJ110x-00xx - Introduction

The EJ110x-00xx EtherCAT Coupler

The coupler connects the EtherCAT Device Protocol with the EtherCAT plug-in modules (EJxxxx). It converts the passing telegrams from Ethernet 100BASE-TX to E-bus signal representation.
In the EtherCAT network, the coupler can be installed anywhere in the Ethernet signal transfer section (100BASE-TX). The coupler thereby processes exclusively unaddressed MAC Broadcast telegrams of the type EtherCAT Device Protocol from the EtherCAT master. Since directed addressing via MAC Unicast or IP addressing is not used, neither a switch nor a router can be used.

The EJ1100 coupler has two internal RJ45 sockets. The coupler is connected to the network with the upper Ethernet interface. The lower RJ45 socket is used for the optional connection of further EtherCAT devices to the same segment.
The coupler supplies the appended plug-in modules with the necessary E-bus power for communication (see Note regarding E-Bus current in the EtherCAT System Description). The EJ1100 coupler can supply maximally 3.3 V / 2.2 A.

In the EJ1101-0022 coupler the RJ45 sockets are external and enable direct placement on the signal distribution board.
In combination with the EJ9400 (2.5 A) and EJ9404 (12 A) external plug-in modules, a wide range of installation options (control cabinet feed-throughs, housing installation) can be implemented.
With the EJ1101-0022 coupler there is an option to assign a unique ID to a group of EtherCAT components via external ID switches (see chapter ID-Switch). This group can be located at any position within the EtherCAT network. Variable topologies are therefore easily implementable.