Scale_X (Scale) And Norm_X (Normalize) Instructions - Siemens S7-1200 System Manual

7.7.5

SCALE_X (Scale) and NORM_X (Normalize) instructions

Table 7- 89 SCALE_X and NORM_X instructions
LAD / FBD SCL
out :=SCALE_X(min:=_in_,
out :=NORM_X(min:=_in_,
For LAD and FBD: Click the "???" and select a data type from the drop-down menu.
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Table 7- 90 Data types for the parameters
Parameter Data type
MIN SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal
VALUE SCALE_X: Real, LReal
NORM_X: SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal
MAX SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal
OUT SCALE_X: SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal
NORM_X: Real, LReal
For SCALE_X: Parameters MIN, MAX, and OUT must be the same data type.
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For NORM_X: Parameters MIN, VALUE, and MAX must be the same data type.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
value:=_in_,
max:=_in_);
value:=_in_,
max:=_in_);
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7.7 Conversion operations
Description
Scales the normalized real parameter VALUE
where ( 0.0 <= VALUE <= 1.0 ) in the data type
and value range specified by the MIN and MAX
parameters:
OUT = VALUE (MAX - MIN) + MIN
Normalizes the parameter VALUE inside the
value range specified by the MIN and MAX
parameters:
OUT = (VALUE - MIN) / (MAX - MIN),
where ( 0.0 <= OUT <= 1.0 )
Description
Input minimum value for range
Input value to scale or normalize
Input maximum value for range
Scaled or normalized output value
Basic instructions
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