ABB AC 31 - 5.5. NOR operation; 5.6. Combinations of Boolean functions

Programming
Page 5-36 ABB Control - AC 31
1SBC 260400 R1001-b 06.99
5.5. NOR operation
The NOR diagram has a status of 0 if one of the inputs has a status of 1.
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A NOR diagram has the same function as an AND diagram with complemented inputs.
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5.6. Combinations of Boolean functions
The following example describes the association between Boolean functions.
It is not necessary to pass via intermediate variables as shown in the figure below.
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If the intermediate result is required further on in the program, the result of each base function
is placed in the intermediate variables as shown following:
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