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MELSEC System Q
Mitsubishi MELSEC System Q User Manual
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4–4
8
MITSUBISHI ELECTRIC
Programming
PLC
Applications
An
Introduction
to
Programming
111
113
Table of Contents
Default Chapter
11
Table of Contents
11
1 Introduction
15
About this Manual
15
More Information
15
2 Programmable Logic Controllers
17
What Is a PLC
17
How Plcs Process Programs
18
3 The MELSEC System Q
21
System Configuration
21
Base Units
23
Extensions Base Cables
23
Allocation of I/O Addresses
24
Power Supply Modules
25
The CPU Modules
27
Part Names of CPU Modules
29
Memory Organisation
32
Installation of the Battery for the CPU Module
35
Digital Input and Output Modules
36
Digital Input Modules
37
Digital Output Modules
44
Special Function Modules
51
Analog Modules
51
Temperature Control Modules with PID Algorithm
54
High-Speed Counter Modules
54
Positioning Modules
55
Serial Communication Modules
55
BASIC Programmable Interface Modules
56
Networks and Network Modules
57
Networking on All Levels
57
Open Networks
58
MELSEC Networks
60
Network Modules
61
4 An Introduction to Programming
65
Structure of a Program Instruction
65
Bits, Bytes and Words
66
Number Systems
66
Codes
69
BCD Code
69
ASCII Code
70
Programming Languages
71
Text Editors
71
Graphic Editors
72
The IEC 61131-3 Standard
74
Software Structure
74
Variables
75
The Basic Instruction Set
77
Starting Logic Operations
78
Outputting the Result of a Logic Operation
78
Using Switches and Sensors
80
AND Operations
81
OR Operations
82
Instructions for Connecting Operation Blocks
84
Pulse-Triggered Execution of Operations
86
Setting and Resetting Devices
89
Generating Pulses
92
Inverting the Result of an Operation
93
Inversion of Bit Output Device
94
Operation Result into Pulse Conversion
95
Safety First
96
Programming PLC Applications
98
A Rolling Shutter Gate
98
Programming
99
The Hardware
110
5 Devices in Detail
113
Inputs and Outputs
113
External I/O Signals and I/O Numbers
114
Inputs and Outputs of the MELSEC System Q
115
Relays
116
Special Relays
117
Timers
118
Counters
121
Registers
123
Data Registers
123
Special Registers
124
File Registers
125
Constants
126
Decimal and Hexadecimal Constants
126
Floating Decimal Point Constants
126
Character String Constants
126
Programming Tips for Timers and Counters
127
Specifying Timer and Counter Setpoints Indirectly
127
Switch-Off Delay
129
Delayed Make and Break
131
Clock Signal Generators
132
6 More Advanced Programming
133
Applied Instructions Reference
133
Additional Instructions for Process Cpus
142
Instructions for Moving Data
144
Moving Individual Values with the MOV Instruction
144
Moving Groups of Bit Devices
146
Moving Blocks of Data with the BMOV Instruction
148
Copying Source Devices to Multiple Destinations (FMOV)
149
Exchanging Data with Special Function Modules
150
Compare Instructions
154
Math Instructions
157
Addition
157
Subtraction
160
Multiplication
161
Division
162
Combining Math Instructions
163
Index
165
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Mitsubishi MELSEC System Q Specifications
General
Brand
Mitsubishi
Model
MELSEC System Q
Category
Controller
Language
English
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