ABB i-bus KNX ABA/S 1.2.1 Product Manual page 50

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ABB i-bus KNX
Parameters
Use Case
You want to ensure that from a set of signals, exactly one is 1 while the others are 0. The switching shown
ensures that this is the case.
Fig. 11: Use case, 1ofN element
If more than one of the three input values is 1, this results in a 1ofN link of 0. The AND logic gates
therefore force the three output values to 0.
Other
Unlinked inputs are treated as if they did not exist.
50 2CDC509086D0201 | ABA/S 1.2.1