The Anybus Communicator ABC3128 EtherCAT main device Modbus TCP is an industrial protocol gateway with which you connect EtherCAT devices (slaves) to a Modbus TCP network.
The Anybus Communicator ABC3107 EtherCAT main device EtherNet/IP is an industrial protocol gateway with which you connect EtherCAT devices (slaves) to an EtherNet/IP network.