User Manual

LOGO! functions
4.2 Basic functions list - GF
LOGO!
Manual, 06/2014, A5E33039675
123
4.2.3
NAND (not AND)
The output of the NAND is only 0 if the status at
all
inputs is 1, that is, the contacts are
closed.
At an unused block input (x): x = 1.
NAND function logic table
1
2
3
4
Q
0
0
0
0
1
0
0
0
1
1
0
0
1
0
1
0
0
1
1
1
0
1
0
0
1
0
1
0
1
1
0
1
1
0
1
0
1
1
1
1
1
0
0
0
1
1 0 0 1 1
1
0
1
0
1
1
0
1
1
1
1
1
0
0
1
1
1
0
1
1
1
1
1
0
1
1 1 1 1 0
4.2.4
NAND with edge evaluation