Setting The Profibus Address - Siemens SINAMICS S120 Manual
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4.4.2.7
Setting the PROFIBUS address
On the CU320-2 DP, the PROFIBUS address is set as a hexadecimal value via two rotary coding
switches. You can set values from 0
switch (H) you set the hexadecimal value for 16
set the hexadecimal value for 16
Table 4-22
Setting the PROFIBUS address
Observe the properties of the rotary coding switch:
• The rotary coding switches used to set the PROFIBUS addresses are located beneath the cover.
• The factory setting for the rotary coding switches is 0
• Address 126 is used for commissioning. Permitted PROFIBUS addresses are 1 ... 126.
• The currently set address of the rotary coding switch is displayed in parameter r2057.
• When several Control Units are connected to a PROFIBUS line, set the addresses differently
than for the factory setting. Each PROFIBUS address in a PROFIBUS line can only be assigned
once. Either set the PROFIBUS address in absolute terms using the rotary coding switches –
or selectively in parameter p0918. Each change made to the bus address is not effective until
POWER ON.
Note
Only values from 1 to 126 (7E
then the set value is interpreted as "0". If a value "0" or "127" is set, the value in parameter p0918
defines the PROFIBUS address.
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
PROFIBUS address switch
Rotary coding
Significance
switches
16
0
DP
H
0
DP
L
(00
) to 127
dec
hex
and at the lower rotary coding switch (L) you
1
.
0
21
dec
15
hex
= 16
1
1
16
= 1
5
0
) are valid for PROFIBUS addressing. If values above 127 are set,
hex
Control Units and operating elements
4.4 Control Unit CU320-2 DP (PROFIBUS)
(7F
). At the upper rotary coding
dec
hex
Examples
35
dec
23
hex
2
3
(00
).
dec
hex
126
dec
7E
hex
7
E
75
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