Communication networks have been traditionally employed in motion control applications, especially within factory automation systems. While in the past, they were merely used to exchange non-time critical data (e.g. parameters and configuration data) now-a-days they allow for much more powerful performance. Recently introduced Real-Time Ethernet (RTE) networks, have been explicitly designed in order to cope with very tight timing constraints in terms of both determinism and real-time. In this paper, the focus is on Ethernet open POWERLINK along with an example of its employment for a motion control application.