Siemens S7-1200 System Manual page 40

STEP 7 programming software
2.3 Easy-to-use tools
In the "Edit Calculate" box, enter the equation with the parameter names:
OUT = ((in4 - in5) / (in2 - in3)) * (in1 - in3) + in5
When you click "OK", the Calculate
instruction creates the inputs
required for the instruction.
Enter the tag names for the values
that correspond to the parameters.
40
In (in1)
value
In (in2)
high
In (in3)
low
Out (in4)
high
Out (in5)
low
Analog input value
Upper limit for the scaled input value
Lower limit for the scaled input value
Upper limit for the scaled output value
Lower limit for the scaled output value
System Manual, 03/2014, A5E02486680-AG
S7-1200 Programmable controller