Техническая Спецификация для Siemens SPS starter kit 6ED1057-3BA10-0AA8 6ED1057-3BA10-0AA8
Модели
6ED1057-3BA10-0AA8
Reference material
5.2 Basic functions (FBD and UDF Editors)
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Operating Instructions, 06/2014
Operating Instructions, 06/2014
209
5.2.3
NAND
The output of an NAND function is only 0 if all inputs are 1, i.e. when they are closed.
A block input that is not used (x) is assigned: x = 1.
A block input that is not used (x) is assigned: x = 1.
NAND function logic table
Input 1
Input 2
Input 3
Input 4
Output
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
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
A block input that is not used (x) is assigned: x = 1.
Timing diagram of a NAND with edge evaluation