2 Connecting to SIEMENS PLCs 2-3 Communication Parameter Setting 2-3-4 SIEMENS S7-300 Ethernet (TCP Slave) PT Settings 2 2-3-4 SIEMENS S7-300 Ethernet (TCP Slave) PLC Settings Using Ethernet Port of CPU Unit Make settings with SIMATIC STEP 7 (TIA Portal). NB-series Programmable Terminals Host Connection Manual (V108) 2-17