User's Manual

LOGO! functions

4.2 Basic functions list - GF

LOGO!

Manual, 04/2011, A5E03556174-01

145

4.2.3 NAND (not AND)











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