Lenze 8400 - Manual (Page 1278)

18 Function library
18.1 Function blocks | L_DigitalLogic_1
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Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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18.1.77 L_DigitalLogic_1
This FB provides a binary output signal created by a logic operation of the input signals. Optionally,
one of the constant binary values independent from the input signals can be output.
• Output of a constant binary value
• Logical ANDing of the inputs
• Logical ORing of the inputs
• Output depending on the combination of the input signals
Inputs
Outputs
Parameter
Identifier
Data type
Information/possible settings
bIn1
BOOL
Input signal 1
bIn2
BOOL
Input signal 2
bIn3
BOOL
Input signal 3
Identifier
Data type
Value/meaning
bOut
BOOL
Output signal
Parameter Possible settings Info
C00820 Function selection
0 "0" Constant value "FALSE"
1 "1" Constant value "TRUE"
2 AND operation
3 OR operation
4 bOut = f (truth table) The output value depends on the
truth table parameterised in
C00821/1...8
/B'LJLWDO/RJLFB
E,Q
!
E2XW
&
&
&
&
E,Q
E,Q
&
bOut bIn1 bIn2 bIn3 ∧ ∧ =
bOut bIn1 bIn2 bIn3 ∨ ∨ =