TwinCAT PROFINET IO Controller

The TwinCAT PROFINET IO Controller (master) is a TwinCAT supplement that turns every Beckhoff PC-based controller into a PROFINET IO controller. By installation of the supplement, a Ethernet interface becomes a PROFINET master. The supplement can be used on PCs and Embedded PCs. PROFINET can also be tunnelled via EtherCAT in conjunction with the EL6631 PROFINET terminal for the EtherCAT I/O system. This way, any EtherCAT network can exchange data with PROFINET IO devices. When using the EL6631, the TwinCAT PROFINET IO Controller supplement is not necessary.

Source: http://www.beckhoff.com.my/TC-PROFINET-Controller/