2 Instructions
2-226 CP1E CPU Unit Instructions Reference Manual(W483)

Using Floating-point Data

In this example, APR(069) is used to convert the fluid height in a tank to fluid volume based on the

shape of the holding tank.

C+1
C+2
C+3
C+4
C+5
C+6
C+7
C+8
C+ (4n+1)
C+ (4n+2)
C+ (4n+3)
C+ (4n+4)
C+ (4m+1)
C+ (4m+2)
C+ (4m+3)
C+ (4m+4)
X0
Y0
Ym
Xm
RR+1SS+1
0
APR
C
S
R
0.00
Fluid height = X
Fluid volume
= Y
Fluid height to volume
conversion table
(Floating-point data)
Y data range:
−∞,3.402823× 1038 to
1.175494× 1038,
1.175494× 1038 to
3.402823× 1038, or +
Y: Fluid volume X: Fluid height
Linear extrapolation of table
The linear extrapolation can
provide a smooth, high-resolution
curve floating-point data is used.
High-resolution
floating point data
X0 (rightmost 16 bits)
X0 (leftmost 16 bits)
Y0 (rightmost 16 bits)
Y0 (leftmost 16 bits)
X1 (rightmost 16 bits)
X1 (leftmost 16 bits)
Y1 (rightmost 16 bits)
Y1 (leftmost 16 bits)
to
Xn (rightmost 16 bits)
Xn (leftmost 16 bits)
Yn (rightmost 16 bits)
Yn (leftmost 16 bits)
to
Xm (rightmost 16 bits)
Xm (leftmost 16 bits)
Ym (rightmost 16 bits)
Ym (leftmost 16 bits)
to
to
X data range:
−∞,3.402823× 1038 to 1.175494 × 1038,
1.175494× 1038 to 3.402823 × 1038, or +