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6.5
Serial interface
Information on the serial interface
• Via the serial interface on the device (RJ-11 jack), you can access the CLI of the device directly
via an RS-232 (115200 8N1) connection 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. The connecting cable for the serial interface ships with the device and
can also be ordered as a spare part.
Position and assignment
Figure 6-3
Assignment of the terminal block
The supplied connecting cable has the following assignment:
Contact
1
2
3
4
5
6
7
8
9
SCALANCE XM-400
Operating Instructions, 03/2021, C79000-G8976-C306-10
6 6
5
4
3
2
1
Position and pin assignment of the serial interface (RJ-11 jack) on the SCALANCE XM-400
and the pin assignment of the D-sub female connector.
Pin assignment of the RJ-11 plug
-
-
TD (Transmit Data)
SG (Signal Ground)
RD (Receive Data)
-
6.5 Serial interface
Pin assignment of the D-sub female con‐
nector
-
TD (Transmit Data)
RD (Receive Data)
-
SG (Signal Ground)
-
-
-
-
Connecting up
61
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