Hello Attig,
The EK1100 is an EtherCAT bus coupler, so therefore to communicate with the terminals on the coupler you will need to set up the EtherCAT fieldbus system. You will first need to implement an EtherCAT master to run the feildbus.
Their are a few masters available including from Beckhoff, Omron, Etherlab and National Instruments. If your goal is to use Labview, I would try the National Instruments EtherCAT implementation.
Cheers, Shaun.