6.7
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.
Position and assignment
6
6 5 4 3 2 1
&2162/(
1
6
7
8
9
2
3
4
5
Figure 6-6
Position and pin assignment of the serial interface (RJ-11 socket) on the SCALANCE
XR-300WG and pin assignment of the D-sub socket
Assignment of the connecting cable
The connecting cable listed in the "Accessories" section has the following pin assignment:
Contact
Pin assignment of the RJ-11 plug
Pin assignment of the D-sub female con‐
nector
1
-
-
2
-
TD (Transmit Data)
3
TD (Transmit Data)
RD (Receive Data)
4
SG (Signal Ground)
-
5
RD (Receive Data)
SG (Signal Ground)
6
-
-
7
-
8
-
9
-
Connecting up
6.7 Serial interface
SCALANCE XR-300WG
Operating Instructions, 03/2021, C79000-G8976-C454-07
63
