User might just execute one transaction/program but STAD might display many entries for that single transaction/program  each entryis a dialog step in SAP term. How many dialog-steps are displayed under a transaction/program is related to program/transaction design and how that transaction is executed.
Connections of the types TCP, ISO-on-TCP, UDP, ISO and S7 connection are configured in the SIMATIC Manager in NetPro. These connections are configured in the same way in STEP 7 (TIA Portal). In STEP 7 (TIA Portal) the S7 connections have to be configured in the Devices and Networks editor, in the Network view.
[A] To make a connection to a PC from a DSL or Cable modem you will need to use a CAT 5 patch cable, or a CAT 5e patch cable. The Cat 5 patch cable is what is called a straight through cable, and is the proper cable to use for this application.If you are using a DSL or Cable router, you would still use a CAT 5 patch cable, or a CAT 5e patch cable to connect the DSL or Cable modem to the router.Patch Cables are used to connect devices to each other in a network environment.f you are using a DSL or Cable router, you would still use a CAT 5 patch cable, or a CAT 5e patch cable to connect the DSL or Cable modem to the router.