Real Number Data (Floating-Point Data) - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Real number data (floating-point data)

Data size and data range
Real number data includes single-precision 32-bit real number data and double-precision 64-bit real number data.
Real number data can be stored only in devices other than bit devices or in single-precision or double-precision real data type
labels.
Data name
Single-precision real number data (single-precision
floating-point data)
Double-precision real number data (double-precision
floating-point data)
Configuration of single-precision real number data
The configuration of single-precision real number data compliances with the IEEE754 format.
Configuration of double-precision real number data
The configuration of double-precision real number data compliances with the IEEE754 format.
Data size
Positive 32 bits (2 word)
number
Zero
Negative
number
Positive 64 bits (4 word)
number
Zero
Negative
number
Value range
-126 128
2 ≤real number<2
0
128 -126
-2 <real number≤-2
-1022 1024
2 ≤real number<2
0
1024 -1022
-2 <real number≤-2
1 OVERVIEW
1.2 Data Specification Method
1
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