Mitsubishi Q03UD(E)CPU User Manual

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.9 Numeric Values which can be Used in Sequence Programs
3.9.4 Real numbers (Floating-point data)
3 - 87
1
Overview
2
Performance Specification
3
Sequence Program Configuration and Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files Handled by CPU Module
6
Functions
7
Communication using built-in Ethernet ports of CPU module
8
Communication with Intelligent Function Module
(b) Calculation example
Calculation examples are shown below (the nnnnn "X" indicates an X-system data
expression).
1) Storing "10"
(10)
10 (1010)2 (1.01000..... 2
3
)2
SignPositive to 0
Exponent part3 to 82
H to (1000 0010)
2
Mantissa(010 00000 00000 00000 00000)
2
Therefore, the data expression will be 41200000H, as shown below.
2) Storing "0.75"
(0.75)
10 (0.11)2 (1.100..... 2
-1
)2
SignPositive to 0
Exponent part-1 to 7E
H to (0111 1110)2
Mantissa(100 00000 00000 00000 00000)2
Therefore, the data expression will be 3F400000H, as shown below.
POINT
In binary notation, the portion of the value following the decimal point is calculated
as follows:
Example) (0.1101)
2
(0.1101)2=2
-1
+2
-2
+2
-4
=0.5+0.25+0.0625=(0.8125)10
0.1101
This bit expresses2
-1
This bit expresses2
-2
This bit expresses2
-3
This bit expresses2
-4
Sign Exponent part Mantissa
0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
41 2 00000
Sign Exponent part Mantissa
0 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3F4 00000

Mitsubishi Q03UD(E)CPU Specifications

General

Brand	Mitsubishi
Model	Q03UD(E)CPU
Category	Controller
Language	English