Omron CS1W-HCA12-V1, Руководство по эксплуатации

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179
Improved Instructions
Section 7-14
7-14-2 APR Instruction
Signed BIN 16/32 Bit
Linear Approximation
Operation Overview
All -V1 units, as well as CS1-H CPU units, can use "signed 16/32 bit data"
with APR instruction.
Explanation of Operations
Following the conversion formula below, approximate calculation about the
input data specified in S is performed based on the linear data (Xn, Yn) spec-
ified in T. The result is output to the word specified in D. Only the content
stored in the word address specified in S can be used as the input data X.
When Xn < S < Xn+1
Conversion formula: conversion result = Yn + [{Yn+1
-
Yn}/{Xn+1
-
Xn}] x
{input data S
-
Xn}
APR @APR
T T T: First word address of linear data
S S S: Word address of input data
D D D: First word address of storage location for cal-
culation result
X
Y
Y
n
Y
n+1
X
n
X
n+1
S
S
−
X
n
X
n+1
−
X
n
Y
n+1
-Y
n
Calculation
result
Input data
f (Y)=
Y
n+1
−
Y
n
X
n+1
−
X
n
(S
−
X
n
)
Equation:
D
Y
n
+
X
0
Y
0