X21 Profibus - Siemens SINAMICS S120 Equipment Manual
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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8.4.2.2
X21 PROFIBUS
The PROFIBUS interface X21 can be operated isochronously.
Table 8- 23
X21 PROFIBUS interface
Pin
1
2
3
4
5
6
7
8
9
Connector type
9-pin Sub-D socket
Note
A teleservice adapter can be connected to the PROFIBUS interface X21 for remote
diagnostics.
The power supply for the teleservice (terminals 2 and 7) can have a max. load of 150 mA.
PROFIBUS connector
For the first and last participants in a bus line, the terminating resistors must be switched in,
otherwise, data transmission will not function correctly.
The terminating resistors are activated in the connector.
The cable shield must be connected at both ends over large-surface area contacts.
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
Control Units, Control Unit Adapters and operating components
Signal name
Meaning
-
Not assigned
M24_SERV
Teleservice supply, ground
RxD/TxD-P
Receive/transmit data P (B)
CNTR-P
Control signal
DGND
PROFIBUS data reference potential
VP
Supply voltage plus
P24_SERV
Power supply for teleservice, + (24 V)
RxD/TxD-N
Receive/transmit data N (A)
-
Not assigned
8.4 Control Unit CU310-2 DP (PROFIBUS)
Range
0 V
RS485
TTL
5 V ± 10 %
24 V (20.4 ...
28.8 V)
RS485
253
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