Lenze DDS Function library Drive - Manual (Page 45)

Function library LenzeDrive.lib
Digital signal processing
2.3.6 Logical OR (L_OR)
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L
LenzeDrive.lib EN 1.7
2.3.6 Logical OR (L_OR)
This FB enables the logical OR combination of digital signals. You can use this combination for the
control of functions or the generation of status information.
L_OR
bIn1_b
bIn2_b
bIn3_b
bOut_b
>1
Fig. 2−43 Logical OR (L_OR
VariableName DataType SignalType VariableType Note
bIn1_b Bool binary VAR_INPUT
bIn2_b Bool binary VAR_INPUT
bIn3_b Bool binary VAR_INPUT
bOut_b Bool binary VAR_OUTPUT
Truth table
bIn1_b bIn2_b bIn3_b bOut_b
0 0 0 0
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 1
0 = FALSE
1 = TRUE
The function corresponds to a parallel connection of normally−open contacts in a contactor control.
bIn2_b bIn1_b bIn3_b
bOut_b
Fig. 2−44 Function of L_OR as a parallel connection of normally−open contacts
Note!
If you only need 2 inputs, use the inputs bIn1_b and bIn2_b. Fix the input bIn3_b to FALSE.