ABB i-bus KNX AC/S 1.x.1 Series Product Manual page 89

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ABB i-bus KNX
Parameters
Application example
You want to ensure that from a set of outputs, exactly one has the value 1 while the other outputs are 0.
The circuit shown ensures that this is the case.
If more than one of the three input values is 1, this results in a 1ofN operator is equal to 0. The AND logic
gates therefore force the three output values to 0.
Other
Inputs not connected are treated as if they did not exist.
AC/S 1.x.1 | 2CDC508198D0211 Rev. A 89