Siemens SINAMICS S120 Equipment Manual page 39

Terminating resistors
The first and last nodes in a bus must contain terminating resistors. Otherwise data
transmission will not function correctly.
The cable shield must be connected at both ends over large-surface area contacts.
PROFIBUS address switches
Table 2-7 PROFIBUS address switches
Technical specifications
0 1 2 3
2 2 2 2
Significance:
1 2 4 8
S1
S2 S3 S4 S5
1 + 4 +
Example:
PROFIBUS address
Note
The factory setting for the PROFIBUS address switch (0 or 127) must be set via parameters.
The address switch is behind the blanking plate. The blanking plate is supplied.
Setting the PROFIBUS address
The following reference contains information about setting the PROFIBUS address:
Reference: /IH1/ SINAMICS S120 Installation and Start-Up Manual
Serial interface (RS232) X140
Reserved
Equipment Manual for Control Units and Additional System Components
Equipment Manual, (GH1), 04.2004 Edition, 6SL3097-2AH00-0BP0
Switch
S1
S2
S3
4 5 6
2 2 2
16 32 64
S4
ON
S5
OFF
S6
S6 S7
S7
32 = 37
= 37
2.2 Control Unit 320 (CU320)
Significance
2 = 1
0
2 = 2
1
2 = 4
2
2 = 8
3
2 = 16
4
2 = 32
5
2 = 64
6
Control Units
2-11