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Reference material
5.2 Basic functions (FBD and UDF Editors)
LOGO!Soft Comfort Online Help
238 Operating Instructions, 11/2017
5.2.4
NAND with edge evaluation
The output is set to 1 for the duration of one cycle and must be reset to 0 at least for the
duration of the next cycle before it can be set to 1 again.
A block input that is not used (x) is assigned: x = 1.
Timing diagram of a NAND with edge evaluation
Overview (Page 235)
5.2.5
OR
The output of an OR function is 1 if
at least one
input is 1 (closed).
A block input that is not used (x) is assigned: x = 0.
OR function logic table
Input 1
Input 2
Input 3
Input 4
Output
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
1
0
1
1
1
1
1
0
0
1
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