JUMO 705010 mTRON T - Multichannel Controller Module Operating Manual - Manual (Page 124)

8 Configuration – in setup program only
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Displaying linearization on a graphic ("Display graphic" button)
Use this button to create a graphic of the linearization.
The graphic includes the characteristic lines for both types of linearization where applicable,
namely the grid points (table) and the formula.
The displayed graphic range is initially defined by the lowest and the highest grid point. Within
the graphic, the range can be changed temporarily by entering other x-values.
Calculating the polynomial using the grid points ("fx" button)
After entering the pair of values, use this button to calculate a polynomial that describes the
progression of the linearization characteristic line.
The calculated coefficients are incorporated into the formula. The characteristic lines for both
types of linearization then correspond to each other.
The linarization is not applied if the x-values are not monotonically increasing. In this case it is
not possible to display the graphic or to calculate the polynomial.
8.1.2 Formula
Customer-specific linearization is specified using a 4th order polynomial. The polynomial is cal-
culated for the entire linearization range.
Polynomial formula: y = X4*x
4
+ X3*x
3
+ X2*x
2
+ X1*x + X0
Setup dialog
Parameters
Parameter Selection/settings Description
Measuring range
start (Ymin) -99999 to 0 to +99999 Start value of the y-axis
Measuring range
end (Ymax) -99999 to 100 to +99999 End value of the y-axis