Siemens SIPROTEC 4 Manual page 23

Click OK.
²
If you have retrofitted the device or if you want to install the Modbus TCP protocol afterwards, you have to
activate the Modbus TCP protocol.
Click on L ... beside the selection for Port B.
²
In the dialog MLFB-externsion, select the option Modbus TCP.
²
[sc_Activating-MODBUS-TCPProtocol, 1, en_US]
Figure 2-6
Click OK.
²
Select the Folder and and insert an IEC61850 station via context menu Insert New Object → IEC 61850
²
station.
An IEC61850 station is inserted in the DIGSI 4 Manager
SIPROTEC 4, Modbus TCP Profile, Manual
C53000-L1840-C582-1, Edition 07.2015
Activating the Modbus TCP Protocol
Configuration in DIGSI 4
2.1 Inserting and Adjusting a New Project
23