Mitsubishi FX3U Series Programming Manual

125
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.9 Data Register and File Register [D]
1
Introduction
2
Overview
3
Instruction List
4
Devices in Detail
5
Specified the Device & Constant
6
Before Programming
7
Basic Instruction
8
FNC00-FNC09 Program Flow
9
FNC10-FNC19 Move & Compare
10
FNC20-FNC29 Arith. & Logic Operation
4.9.2 Structures of data registers and file registers
1) 16-bit type
One (16-bit) data register or file register can store a numeric value ranging from -32,768 to +32,767.
A numeric value can be read from or written to a data register by an applied instruction usually.
Or a numeric value can be directly read from or written to a data register from a display unit, display module, or
programming tool.
2) 32-bit type
Two serial data registers or file registers can express 32-bit data.
- A data register with a larger device number handles high-order bits, and a data register with a smaller device
number handles low-order bits.
- In the index type, V handles high-order bits, and Z handles low-order bits.
Two data registers or file registers can store a numeric value ranging from -2,147,483,648 to +2,147,483,647.
In the case of 32-bit type, when a data register or file register on the low-order side (example: D0) is specified, the
subsequent number on the high-order side (example: D1) is automatically occupied.
Either an odd or even device number can be specified for the low-order side, but it is recommended to specify an
even device number for the low-order side under consideration of the monitoring function of display units, display
modules, and programming tools.
1010101010101010
1 2 4 8
16 32 64
128 256 512
1024 2048 4096 8192
16384
b15
Sign
0: Positive
number
1: Negative
number
b0
High
order
Low
order
D 0 (16 bits)
0000111100001111
1 2 4 8
16 32 64
128 256 512
1024 2048 4096 8192
16384
b31
Sign
0: Positive
number
1: Negative
number
b0
High
order
Low
order
1010101010101010
32768 65536
131,072 262,144 524,288
1,048,576 2,097,152 4,194,304 8,388,608
16,777,216 33,554,432 67,108,864
134,217,728 268,435,456 536,870,912
1,073,741,824
D1 (high-order 16 bits)
D0 (low-order 16 bits)

Mitsubishi FX3U Series Specifications

General

Brand	Mitsubishi
Model	FX3U Series
Category	Controller
Language	English