Siemens LOGO! Series - NAND (Not AND)

LOGO! functions
4.2 Basic functions list - GF
LOGO!
Manual, 04/2011, A5E03556174-01
145
4.2.3 NAND (not AND)





4
3DUDOOHOFLUFXLWZLWKPXOWLSOHEUHDN
FRQWDFWVLQWKHFLUFXLWGLDJUDP
6\PEROLQ/2*2
The output of the NAND is only 0 if the status at all inputs is 1, i.e. 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