SCALE_W
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SCALE_W |
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This component allow you to scale a 16 bits unsigned value into another 16 bits unsigned value. The object allow you to define a fixed-point factor that could be 1,2 or three decimals deep. Using fixed point arithmetic allow you to increase overall performances and decrease computation time. Essentially this component scales the input value into the defined output range honouring the given number of fixed decimal digits
The following transformation is applied
Input Values
MultFactor = 10,100,1000
FinalDiv = 1,10,100,1000
inL = Input Low Limit
inH = Input High Limit
outL = Output Low Limit
outH = Output High Limit
Intermediate computed values
SpanIn = ( inH - inL )
SpanOut=( outH - outL )
Span = ( ( SpanOut * MultFactor ) / SpanIn )
Computed output value
Out = ( Span * ( Input - inLow ) + inL ) / FinalDiv
Property settings
Parameter |
Meaning |
Description |
REFERENCE |
The REFERENCE field |
Don't care |
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FACTOR |
Fixed point factor |
This parameter allow you to define the fixed point factor that can be one,two or three decimals. This parameter determine the "precision" used by the component to obtain the resulting output. This technique is also known as "Fixed Point Math". |
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FINALDIV |
Final division |
This is the divide factor applied as last operation before returning the output value. |
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INPUT_MIN |
Input value (minimum) |
This is the low-side input value |
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INPUT_MAX |
Input value (maximum) |
This is the high-side input value |
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OUTPUT_MIN |
Output value (minimum) |
The low side output value |
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OUTPUT_MAX |
Output value (maximum) |
The high side output value |
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Net plugs
Plug |
Description |
IN |
The unsigned 16 bits input value |
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OUT |
The unsigned 16 bits output value |
Some Examples
Input Values |
Result |
MultFactor = 1000 FinalDiv = 1
inL = 0 inH = 10
outL = 0.000 outH = 100.000
Input value = 5
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50 |
MultFactor = 1000 FinalDiv = 1
inL = 0.000 inH = 10.000
outL = 0.000 outH = 5.000
Input value = 5
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2 (2.5 rounded to 2) |
MultFactor = 1000 FinalDiv = 1
inL = 0.000 inH = 12.345
outL = 0.000 outH = 67.898
Input value = 5
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27 (27.5 rounded to 27) |