Siemens SIMATIC S7 300 Getting Started page 26

Configuration
4.1 Creating a T station
Step Activity
6 Drag-and-drop the CPU 317T-3PN/DP to the mounting rail.
7 The "Properties - Ethernet Interface" dialog box opens.
Click "New" to create an Ethernet interface.
8 Confirm all open Ethernet dialog boxes with "OK".
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Result
A dialog box to create an Ethernet
interface opens.
An Ethernet interface was created.
CPU 317T-3PN/DP: Controlling a SINAMICS S120
Getting Started, 10/2013, A5E00480391-06