If I understand you correctly, you want to know how to create a network connection. But creating a network connection is not everything.
Which method do you want to use?

Master/Slave:
There is only one program for the master/slave procedure, and this only in the master LOGO!. It's easier to program, but you can not use the full potential of both LOGO!s. Here provides the slave LOGO! their hardware including expansion modules to the master LOGO!.
If the master LOGO! is out of function, makes the slave LOGO! no longer their job.

Master/ Master:
A program is running in both LOGO!s. Every LOGO! can use her full potential. If one of the two LOGO!s fails, the other LOGO! continue for her part.

You see an example in the attached video.

You have to set the slave LOGO! per menu or per Software in slave modus.