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2 Simple Application Controllers
The Logic Function Blocks 5
5 - 2
5.1
The AND Block
The AND block comes ON when all the inputs are ON.
Any Input that is OFF will keep the Output turned OFF.
Unused inputs are considered to be ON.
If no Input pins are connected, the block output is OFF.
Table 5.2: AND Logic gate
Input 1
Input 2
Input 3
Input 4
Output
On
On
On
On
On
On
On
On
Off
Off
On
On
Off
On
Off
On
Off
On
On
Off
Off
On
On
On
Off
On
On
Off
Off
Off
On
Off
Off
On
Off
Off
Off
On
On
Off
Off
On
On
Off
Off
On
Off
On
Off
Off
Off
On
Off
On
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
0 0
A N D
2
3
O
4
1
01
AND
Output
1
2
3
4