X140 Serial Interface (Rs 232) - Siemens SINAMICS S120 Manual

Note
The LAN interface does not support auto-MDI(X). If the LAN interface of the communication
partner also cannot handle auto-MDI(X), then a crossover cable must be used to establish the
connection.
For diagnostic purposes, the X127 LAN interface features a green and a yellow LED. These LEDs
indicate the following status information:
Table 4-24
LED
Link port
Activity port
4.4.2.9

X140 serial interface (RS 232)

The X140 serial interface is located on the underside of the Control Unit. An external display and
operator device for operator control/parameterization can be connected via this interface. It also
supports the USS protocol.
Table 4-25
Connector type: 9-pin SUB D connector
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
LED statuses for the X127 LAN interface
Color Status
- Off
Green Continuous light
- Off
Yellow Flashing light
X140 serial interface (RS232)
Pin
1
2
3
9
4
5
6
7
1
8
9
Description
Missing or faulty link
10 or 100 Mbit link available
No activity
Sending or receiving
Signal name
Reserved, do not use
RxD
TxD
Reserved, do not use
Ground
Reserved, do not use
Reserved, do not use
Reserved, do not use
Reserved, do not use
Control Units and operating elements
4.4 Control Unit CU320-2 DP (PROFIBUS)
Technical data
-
Receive data
Transmit data
-
Ground reference
-
-
-
-
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