Lenze DDS Function library Drive - Manual (Page 23)

Function library LenzeDrive.lib
Analog signal processing
2.2.8 Comparison (L_CMP)
2−13
L
LenzeDrive.lib EN 1.7
2.2.8 Comparison (L_CMP)
This FB compares two integer values with each other. You can use comparators to implement
threshold switches.
L _ C M P
n I n 1 _ a b O u t _ b
b y F u n c t i o n
n H y s t e r e s i s
n W i n d o w
n I n 2 _ a
Fig. 2−11 Comparison (L_CMP)
VariableName DataType SignalType VariableType Note
nIn1_a Integer analog VAR_INPUT
nIn2_a Integer analog VAR_INPUT
bOut_b Bool binary VAR_OUTPUT
byFunction Byte VAR CONSTANT RETAIN Comparison function for the inputs
nHysteresis Integer VAR CONSTANT RETAIN Hysteresis function
nWindow Integer VAR CONSTANT RETAIN Window function
Parameter codes of the instances
VariableName L_CMP1 L_CMP2 L_CMP3 SettingRange Lenze
byFunction C0680 C0685 C0690 1 ... 6 6
nHysteresis C0681 C0686 C0691 0.00 ... 100.00 % 1.00
nWindow C0682 C0687 C0692 0.00 ... 100.00 % 1.00
Function
Selection of the function Comparison function
byFunction = 1 nIn1_a = nIn2_a
byFunction = 2 nIn1_a > nIn2_a
byFunction = 3 nIn1_a < nIn2_a
byFunction = 4 ½nIn1_a ½ = ½nIn2_a ½
byFunction = 5 ½nIn1_a ½ > ½nIn2_a ½
byFunction = 6 ½nIn1_a ½ < ½nIn2_a ½