5 Installation and Commissioning 
 
Communication with S7 CPU via KNX Gateway 
Entry ID: 109739689,    V1.0,    06/2017 
 
 Siemens AG 2017 All rights reserved 
5.3.2  Commissioning the S7-1200 CPU 
Table 5-2: Commissioning the S7-1200 CPU 
Start STEP 7 (TIA Portal) and open the 
“MBS_KNX” STEP 7 project from the 
“109740160_KNX_S7_PROJ_Vxx.zip” file. 
Note 
The gateway’s GSD file is installed 
automatically. 
 
Requirement: You have STEP 7 (TIA Portal) 
V14 or higher installed on your computer. 
Open “Devices & networks”. 
 
Right-click the connection and select 
“Assign device name”. 
Assign the PROFINET device name to the  
S7-1200 CPU and the gateway. 
1.  Select the device name you want to 
assign. 
2.  Click “Update List”. The suitable device 
type is automatically found in the network 
and displayed in the list. 
3.  From the list, select the device to which 
you want to assign the selected name. 
4.  Click “Assign name”. 
 
1.  In the project tree, select the S7-1200 
CPU (here: PLC_1). 
2.   In the menu bar, click the “Download to 
device” button.