Integration via a CU2508 real-time Ethernet port multiplier (Real-Time Ethernet interface)
The following section illustrates how to configure a PROFINET controller using the CU2508 real-time Ethernet port multiplier. However, you can use only one controller or device, if they are in a unique network. If the networks a physically separated, it is possible to use more than one controller or device supplement with one CU2508. This is due to the fact, that the CU2508 uses only one MAC address. The function of several PROFINET segments can only be secured, if the MAC address in a network segment is unique and there is no connection to other networks.
Add the CU2508 real-time Ethernet port multiplier to your TwinCAT project by right-clicking on I/O - Devices > Add New Item and adding the Real-Time Ethernet Adapter (Multiple Protocol Handler) in the window that opens.
Furthermore, the following settings on the Ports tab are necessary for the operation of the CU2508
Virtual Port Selection via:
EtherCAT Switch Link Protocol (ESL) (CU25xx required)
The PROFINET protocol is directly added to the I/O device. Four different PROFINET I/O devices are available for selection. Select the PROFINET I/O Controller (RT) according to the configuration with the CU2508.
