Siemens SINUMERIK 840D sl Commissioning Manual page 77

10.Select the "Topology" tab to assign the "partner port" to X150 P1 and click "OK" to confirm.
Note for the selection of the cable length that a longer cable length also increases the signal
runtime.
11.Select interface X150 in the SINUMERIK NCU and from the shortcut menu "PROFINET IO
Domain Management...".
12.In the list under "Station/device name", select the SINUMERIK NCU and with a double-click,
open the synchronization dialog in order to define the NCU as "Sync master".
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
5.3 Extending the SIMATIC S7 project (PROFINET)
PLC commissioning
77