User Manual

LOGO! functions
4.2 Basic functions list - GF
LOGO!
124 Manual, 06/2014, A5E33039675
The output status of the NAND with edge evaluation is only 1 if
at least one
input is 0 and if
all
inputs were 1 in the previous cycle.
At an unused block input (x): x = 1.
Timing diagram for the NAND with edge evaluation
4.2.5
OR
The output status of the OR element is only 1 if
at least one
input is 1, that is, at least one of
the contacts is closed.
At an unused block input (x): x = 0.
OR function logic table
1
2
3
4
Q
0
0
0
0
0
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