Siemens SINUMERIK 840D sl Manual page 149

When using a CBE30-2, the NCU is assigned an additional interface X1400, comprising 4
PROFINET ports. The NCU-Link is permanently wired via port 1 (in) and port 2 (out).
Note
The Communication Board Ethernet CBE30-2 cannot be used for the NCU730.3B PN with
PLC 319 DP/PN.
Additional references
For further information, please refer to the Function Manual Extended Functions, B3, Chapter
"Link communication".
Illustration
Figure 9-23
Note
The NCU link communication is exclusively operated using ports 1 and 2. Ports 3 and 4 cannot
be used and are not freely available.
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1
CBE30-2 Ethernet communication board
Connectable components
9.5 CBE30-2
149