Beckhoff EL6601 Documentation page 140

Application samples
Fig. 176: Structure HotConnect Group
The system offers EK1110 (end couplers), EK1122 (junction terminals) and free EK1100 ports for connecting
the HotConnect group. The IP addresses should be regarded as samples, the notes from the previous
samples must be taken into account.
No further settings are required at the TwinCAT/EtherCAT master. EoE is automatically forwarded in
TwinCAT 2.11.
Remote access operability and EtherCAT state
The process of Ethernet pass-through described here only works as long as the EtherCAT master
and the EL66xx are at least in state PREOP. Otherwise no mailbox traffic and therefore no Ethernet
transport takes place. However, if the network structure is already functional, this does not repre-
sent an insurmountable obstacle for general commissioning.
Change of location and EtherCAT state
Once the HotConnect group is reconnected with the EtherCAT network it may take several seconds
for the group to participate in the data traffic again, the EL66xx to be in OP state again and the link
(see link LED) to be restored.
Sample configuration
A small EtherCAT system is commissioned, the offline topology view in the System Manager shows two
coupler stations and one non-localized station with an EK1101.
• In offline state the System Manager does not know where the EK1101 station with its ID was
connected.
140 Version: 4.2 EL6601, EL6614