Beckhoff EtherCAT EK112 Series Manual page 86

Basics
Implementation: EK1121-0010 EtherCAT junction, Extended Distance
As in the EK1100, three ESC ports can be connected in these junctions: Two via E-bus within the terminal
and one via the RJ45 sockets with Ethernet configuration.
Implementation: EK1122 EtherCAT junction
In the EK1122 all four ESC ports can be connected - two via the internal E-bus and two via the RJ45 sockets
with Ethernet configuration. In the TwinCAT System Manager the link statuses of ports 0, 1, 2 and 3 are
shown by the online display – they are designated there as ports A, B, C and D; see Fig. "Topology display
for interrupted line [} 88]".
Implementation: EK1521 / EK1521-0010 / EK1561 EtherCAT junction
As in the EK1100, three ESC ports can be connected in these junctions: Two via E-bus within the terminal
and one via the SC socket/versatile link and optical fiber cable/POF line.
Implementation: CU1123-00x0 EtherCAT junction
In the CU1123-00x0 EtherCAT junction three of the four available ports can be connected via the RJ45
sockets.
Implementation: CU1124 EtherCAT junction
In the CU1124 EtherCAT junction all four available ports can be connected via the RJ45 sockets.
Implementation: CU1128 EtherCAT junction
The CU1128 integrates three ESCs, which means eight ports in total are available to users. The three ESCs
are interconnected via E-bus.
Example configuration with EK1122
The following section describes the link characteristics under TwinCAT and its representation in the System
Manager.
Fig. 63: Example configuration
86 Version: 3.6 EK112x, EK15xx