Exchange between PLC in PCS 7.1 compared with 7.0

[xxJUKxx]

Hello colleagues I have the PCS 7.1 and 2 x 400-controller in the project. I want them to connect to Ethernet.
Previously in version 7.0 everything was done the old-fashioned: parameterise connection in NetPro, then inserted in each PLC communications functions, etc. - All work and this way I understand.
In PCS 7.1 this process is now automated, namely: just connect the two legs on CFC of different PLCs and the environment will create a connection between the PLC.
I tried - really!
Flies out the window with the question about the establishment of a connection, I click OK, and then flies out error
"Invalid interconnection and the code it 254:61040. "
It is clear that I am doing something that is not correct.
If the handles to build a connection in NetPro (the old) - everything works.