Siemens S5-135U/155U System Manual page 423

Example:
Analog input module with 4 inputs
The address is the sum of the significances set with the individual coding
switches.
A module with 4 inputs (Channel 0 to 3) and start address 160 reserves the
address range from
In this example, the next free address for another module is 168.
Addresses already assigned must not be set again.
Example:
On an analog input module with start address 160 (IB 160 = input byte 160),
input channel 3 is to be scanned by the program.
Step
1
2
3
System Manual
C79000-G8576-C199-06
7
160 = 128 + 32 = 2
On Setting
(Switch Pressed)
160 to address 160 + 3 x 2 = 166
Action
Affix the self-adhesive label with address 160 on the free field
under the addressing switch on the module. ADB 5 and ADB 7
are marked on the label.
Press the appropriate rockers of the addressing switch down on
the side marked by a dot on the module cover. Set the other
rockers to the opposite setting. This way sets the start address of
the module.
ADB 5 and ADB 7 results in 2
Enter the address 160 + 3 x 2 = 166 in the program for input
channel 3.
Analog Input/Output Modules
5
+ 2
IB 160
5 7
+ 2 = 32 + 128 = 160
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