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2.3.5 Logical NOT (L_NOT)

Function library LenzeDrive.lib

Digital signal processing

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LenzeDrive.lib EN 1.7

2.3.5 Logical NOT (L_NOT)

This FB enables the logical inversion of digital signals. You can use this FB for the control of functions

or the generation of status information.

bIn_b

bOut_b

L_NOT

Fig. 2−41 Logical NOT (L_NOT)

VariableName DataType SignalType VariableType Note

bIn_b Bool binary VAR_INPUT

bOut_b Bool binary VAR_OUTPUT

Truth table

bIn_b bOut_b

0 1

1 0

0 = FALSE

1 = TRUE

The function corresponds to a change from a normally−open contact to a normally−closed contact

in a control with contactors.

bIn_b

bOut_b

Fig. 2−42 Function of L_NOT as a change from a normally−open to a normally−closed contact

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Lenze DDS Function library Drive Manuel d'utilisateur Page 44