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α
PneuAlpha2 Simple Application
5.6
The NOR Block (Not OR)
The Output comes ON when all the inputs are OFF.
The Output remains OFF if any input is ON.
If no Input pin is used, the block output is OFF.
Unused Inputs are considered to be OFF
This block is equivalent to an OR block followed by a NOT block
Table: 5.7: NOR Logic gate
Input 1
Off
On
On
On
On
Off
On
On
On
Off
Off
Off
On
Off
Off
Off
Input 2
Input 3
Off
Off
On
On
On
On
On
Off
Off
On
On
On
On
Off
Off
On
Off
Off
On
On
On
Off
Off
On
Off
Off
On
Off
Off
On
Off
Off
Input 4
Output
Off
On
On
Off
Off
Off
On
Off
On
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off
On
Off
On
Off
Off
Off
Off
Off
Off
Off
On
Off
The Logic Function Blocks 5
5 - 6
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