Siemens S5-155U System Manual page 317

System Manual
C79000-B8576-C199-03
Example
Digital input module with 8 inputs (IB 23) or
digital output module with 8 outputs (QB 23).
The address is the sum of binary significances set with the individual
coding switches:
23 = 1 + 2 + 4 + 16 = 2
On Setting
(Switch Pressed)
Example
Digital input module with 32 inputs (IB 80) or
digital output module with 32 outputs (QB 80).
The address is the sum of binary significances set with the individual
coding switches:
4
80 = 16 + 64 = 2 + 2
On Setting
(Switch Pressed)
Installation and Startup
0 1 2 4
+ 2 + 2 + 2
IB 23 (or QB 23)
6
IB 80 (or QB 80)
8
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