in your case you have different choices... but all of them include S7-Communication functions as Server.

First of all you have an MPI interface build in your CPU. This interface may be used for PG functions but may also be used for a SCADA system. The problem in this case is that the MPI interface is a potential bounded interface, so you may not connected to segments longer than 50 m over all. If you do you risk that the system may get damaged.

Other possibilities are opened by adding Ethernet or PROFIBUS CP’s. Well, you have a rather old CPU but I guess that most CP’s should work with it especially the older versions.
If you use the CP you just assign Addresses to them, everything else is being done by the OS of the CP and CPU. Both would work as S7-Communication server.

Connecting to the MPI or PROFIBUS interface is being done by using PROFIBUS cable, with PROFIBUS connectors.

Connecting to the industrial Ethernet CP is being done by a standard Ethernet RJ45 cable.

I hope all these information’s will help you.

Best regards