Operating Instructions
Modular Safety Control System MSC
128
(Translation of the original operating instructions) 2121331-04-04/19
9.4. Function blocks in the "OPERATOR" window
All inputs on these operators can be inverted (logical NOT). To invert, click the input that is to be inverted using the right
mouse button. A small circle then appears on the inverted input. To clear the inversion, simply click the same input again.
Important!
The maximum permissible number of function blocks is 64.
9.4.1. Logical operators
9.4.1.1. AND
The logical operator AND produces an output of "1" (TRUE) if all inputs
are "1" (TRUE).
IN
1
IN
2
IN
x
OUT
0
0
0
0
1
0
0
0
0
1
0
0
1
1
0
0
0
0
1
0
1
0
1
0
0
1
1
0
1
1
1
1
Figure 139: AND
Parameter
Inputs number: You can set 2 to 8 inputs using this option.
9.4.1.2. NAND
The logical operator NAND produces an output of "0" (FALSE) if all
inputs are "1" (TRUE).
IN
1
IN
2
IN
x
OUT
0
0
0
1
1
0
0
1
0
1
0
1
1
1
0
1
0
0
1
1
1
0
1
1
0
1
1
1
1
1
1
0
Figure 140: NAND
Parameter
Inputs number: You can set 2 to 8 inputs using this option.
9.4.1.3. NOT
The logical status of the input is inverted using the logical NOT op-
erator.
IN
1
OUT
0
1
1
0
Figure 141: NOT
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