Lenze 8400 - Page 1371

17 Function library
17.1 Function blocks | L_DigitalLogic_1
1371
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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Parameters
Function 4
If the function 4 is selected in C00820
, the output values depend on the truth table parameterised
in C00821/1...24
.
The following table shows which setting may be required in C00821/1...24
to realise the logic
operations NAND, NOR, XOR and XNOR:
Parameters Possible settings Info
C00820
Function selection
0 "0" Constant value "FALSE"
1 "1" Constant value "TRUE"
2AND operation
• bOut2 and bOut3 are available
from version 16.00.00 onwards
3OR operation
• bOut2 and bOut3 are available
from version 16.00.00 onwards
4 bOut = f (truth table)
bOut2 = f (truth table)
bOut3 = f (truth table)
The output value depends on the
truth table parameterised in
C00821/1...24
• bOut2 and bOut3 are available
from version 16.00.00 onwards
C00821/1...24
Truth table for function "4: bOut = f
(truth table)"
• Each of the eight possible input
combinations can be assigned to
the output value FALSE or TRUE.
• For an application example see
the following section.
0FALSE
1TRUE
Input signals Output Parameter setting for logic operation
bIn3 bIn2 bIn1 bOut bOut2 bOut3 NAND NOR XOR XNOR
000C00821/1
C00821/9 C00821/17 =1101
001C00821/2 C00821/10 C00821/18 =1010
010C00821/3
C00821/11 C00821/19 =1010
011C00821/4
C00821/12 C00821/20 =1001
100C00821/5
C00821/13 C00821/21 =1010
101C00821/6
C00821/14 C00821/22 =1001
110C00821/7
C00821/15 C00821/23 =1001
111C00821/8
C00821/16 C00821/24 =0001
bOut bIn1 bIn2 bIn3∧∧=
bOut2 bIn1 bIn2 bIn3∧∧=
bOut3 bIn1 bIn2 bIn3∧∧=
bOut bIn1 bIn2 bIn3∨∨=
bOut2 bIn1 bIn2 bIn3∨∨=
bOut3 bIn1 bIn2 bIn3∨∨=