Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 493

Special Math Instructions
Note
460
The X coordinates must be in ascending order: X
values of (X , Y ) as binary data, regardless of the data format specified in
n n
control word C.
Operation of the Linear Extrapolation Function
APR(069) processes the input data specified in S with the following equation
and the line-segment data (X
The result is output to the destination word(s) specified with D.
Y (Binary data)
Y
max
Y
0
X
0
A B
1. For S < X
0
Converted value = Y
2. For X S X , if X
0 max
Converted value = Y
Y (binary data)
Equation:
Y
n+1
Calculation
D
result
Y
n
3. X < S
max
Converted value = Y
Up to 256 endpoints can be stored in the line-segment data table beginning at
C+1. The following 5 kinds of I/O data can be used:
• 16-bit unsigned BCD data
• 16-bit unsigned binary data
• 16-bit signed binary data
• 32-bit signed binary data
• Single-precision floating-point data
, Y ) specified in the table beginning at C+1.
n n
X
max
C
0
< S < X
n n+1
+[{Y + 1 Y }/{X + 1
n n n n
Y Y
n+1 n
Y +
f(Y)= (S X )
n
n
X X
n+1 n
X X
n+1 n
S X
n
X S X
n n+1
Input data
max
Section 3-13
< X < ... < X . Input all
1 2 m
X (Binary data)
X }] [Input data S
n
Y Y
n+1 n
X (binary data)
X }
n