2 Connecting to SIEMENS PLCs PLC Settings Make settings of the PLC using SIMATIC STEP 7 (TIA Portal). 1 Double-click the [General] tab - [PROFINET interface] - [Ethernet addresses] and set IP address and others. 2 Transfer the set descriptions to the PLC. If you transfer the descriptions for the first time, select the [Extended download to device] and check the [Show All compatible devices] check box. 2-24 NB-series Programmable Terminals Host Connection Manual (V108)