Connecting up   
5.6 Serial interface 
  SCALANCE XR-300WG 
44  Operating Instructions, 05/2017, C79000-G8976-C454-01 
 
Figure 5-2  Position of the device installation connector 
 
Serial interface 
Information on the serial interface 
●  Via the serial interface (RJ-11 jack), you can access the CLI of the device directly via an 
RS-232 connection (115200 8N1) without assigning an IP address. 
●  Access to the device is also possible independent of the Ethernet ports. 
●  To connect the serial interface to the PC, you require a cable with an RJ-11 plug and 9-
pin D-sub female connector. You can order the connecting cable for the serial interface 
as an accessory. 
 
Figure 5-3  Position and pin assignment of the serial interface (RJ-11 socket) on the SCALANCE 
XR-300WG and pin assignment of the D-sub socket