Connecting up
6.5 Serial interface
SCALANCE XM-400
Operating Instructions, 09/2018, C79000-G8976-C306-08
61
Signaling faults
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The signaling of errors by the signaling contact is synchronized with the fault LED "F",
see section ""F" LED (Page 34)".
All errors that the fault LED "F" indicates (freely configurable) are also signaled by the
signaling contact.
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If an internal fault occurs, the fault LED "F" lights up and the signaling contact opens.
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If you connect a communications node to an unmonitored port or disconnect it, this does
not cause an error message.
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The signaling contact remains open until one of the following events occurs:
–
The problem is eliminated.
–
The current status is entered in the fault mask as the new desired status.
6.5
Serial interface
Information on the serial interface
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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.
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Access to the device is also possible independent of the Ethernet ports.
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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
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.
