Appendix
Real-time Ethernet port multiplier 67
Version: 2.6
Fig.92: Selection of the Ethernet adapter
If the adapter you want is not visible, then the Beckhoff real-time driver is not yet installed on this adapter.
Now append the CU2508.
Fig.93: Right mouse click, Append device
If the device name is entered in the search mask (A) the overview is reduced in size. Activate the check
boxes "ExtendedInformation" and "ShowHiddenDevices". As a result of this, a previously hidden element,
the CU2508 configuration port, becomes visible (in this case: CU2508-0000-0016).
Fig.94: Selection of the CU2508-0000 configuration port
Select this device. The configuration now consists of the “EtherCAT Device” and the single slave CU2508.
Now ensure that the function is correct by restarting TwinCAT (B) in ConfigMode and carrying out
ReloadIoDevices (press key F4). If the EtherCAT device is selected (A), the current State OP (D) and Traffic
utilization (E) are displayed in the Online tab (C). Approx. 250 CyclicFrames per second are usual in the
ConfigMode with a 4 ms cycle time; no lost frames or TXRXErrors may occur.
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