Mitsubishi Electric FX Series

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Structured Text Program Example IEC Structured Text

16 - 4 MITSUBISHI ELECTRIC

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Table of Contents11
Course Overview and Requirements17
Modular PLC Training Hardware17
The Hardware19
General Introduction to Plcs19
History & Development19
The Initial Specification for the PLC19
Comparison of PLC and Relay Systems19
Programming20
Human Machine Interfaces20
What Is a PLC21
How Plcs Process Programs22
The MELSEC FX Family24
Selecting the Right Controller25
Controller Design27
Input and Output Circuits27
Layout of the MELSEC FX1S Base Units27
Layout of the MELSEC FX1N Base Units28
Layout of the MELSEC FX2N Base Units28
Layout of the MELSEC FX2NC Base Units29
Layout of the MELSEC FX3G Base Units29
Layout of the MELSEC FX3U Base Units30
Layout of the MELSEC FX3UC Base Units30
Wiring31
Power Supply31
Wiring of Inputs32
Wiring of Outputs33
Extending the Range of Digital Inputs/Outputs35
Extension Boards35
Compact Extension Units35
Modular Extension Blocks36
Extending for Special Functions37
Analog Modules38
High-Speed Counter Modules and Adapters41
Positioning Modules42
Network Modules for ETHERNET43
Network Modules for Profibus/Dp44
Network Modules for CC-Link46
Network Module for Devicenet47
Network Module for Canopen47
Network Module for AS-Interface48
Interface Modules and Adapters49
Communication Adapters50
Setpoint Adapter Boards51
System Configuration52
Connection of Special Adapters54
Basic Rules for System Configuration56
Quick Reference Matrixes57
I/O Assignment59
Concept of Assigning59
Special Function Module Address60
Programming61
Concepts of the IEC61131-3 Standard61
Software Structure and Definition of Terms62
Definition of Terms in IEC61131-362
System Variables69
System Labels70
Programming Languages71
Text Editors71
Graphic Editors72
Data Types75
Simple Types75
Complex Data Types75
MELSEC Timers and Counters80
Building a Project81
Starting GX IEC Developer82
Application Program84
Example: Carousel Indexer84
Creating a New Project86
Creating a New "POU88
Assigning the Global Variables89
Programming the POU Body94
Creating a New Task109
Program Documentation113
Checking and Building the Project Code114
Illustration: Guided Ladder Entry Mode116
Project Download Procedures117
Connection with Peripheral Devices117
Communications Port Setup117
Downloading the Project121
Monitoring the Project123
Split / Multi Window Monitoring124
Adjusting Monitor Visibility126
Cross Reference List127
PLC Diagnostics130
Project Documentation131
Program Example135
An Alarm System135
Method136
Checking the Example Program "Alarm_System138
Functions and Function Blocks139
Functions139
Example: Creating a Function139
Processing Real (Floating Point) Numbers148
Creating a Function Block152
Execution Options of Function Blocks159
Macrocode Execution159
Enable / Enableoutput (EN/ENO)160
Advanced Monitoring Functions161
Entry Data Monitoring161
Customising the EDM162
Monitor Limitations164
Toggling Boolean Variables165
Monitoring Headers166
Monitor Mode Essentials167
Monitoring Mitsubishi "Transfer Form" Objects169
Modifying Variable Values from the POU Body170
Monitoring "Instances" of Function Blocks171
Device Edit173
Online Mode177
Online Change Mode177
Online Program Change179
Data Unit Types (DUT)181
Example Use of a DUT182
Automatic Filling, Variables185
Assigning DUT Variables to Function Blocks188
Arrays191
Overview191
Array Example: Single Dimension Array193
Working with Libraries199
User Defined Libraries199
Example - Creating a New Library199
Opening the Library201
Moving a POU "Function Block" to an Open Library202
Special Note about Libraries205
Importing Libraries into Projects206
Import of an User Library206
Importing a Mitsubishi Library Function Block209
Library Function Block Help212
Security213
Password213
Setting the Password213
Changing the Security Level214
Modifying POU Password Access215
Sequential Function Chart - SFC217
What Is SFC217
SFC Elements218
SFC Transitions218
Initial Step218
Termination Step218
SFC Configuration Examples220
SFC Actions221
Complex Transitions223
IEC Instruction List225
Some Useful Tips225
Mixing IEC IL and Melsec IL in Pous226
IEC Structured Text227
Structured Text Operators227
Structured Text Program Example228
PROFIBUS/DP Communication231
Configuring the PROFIBUS/DP Network231
Ethernet Communications239
Configuring the PC on the Ethernet240
Configuring the FX 3U -ENET by FX Configurator-EN242
Configuring GX IEC Developer to Access the PLC on Ethernet245
Setting up a HMI of the GOT1000 Series (GT12, GT15 or GT16)249
Setting up a HMI of the E1000 Series252
Communication Via MX Component256
Special Relays261
PLC Status Diagnostic Information (M8000 to M8009262
Clock Devices and Real Time Clock (M8011 to M8019262
PLC Operation Mode (M8030 to M8039263
Error Detection (M8060 to M8069264
Extension Boards (Dedicated to FX and FX264
Analog Special Adapter and Adapter Boards for FX 3G265
Special Registers266
PLC Status Diagnostic Information (D8000 to D8009266
Scan Information and Real Time Clock (D8010 to D8019267
PLC Operation Mode (D8030 to D8039267
Error Codes (D8060 to D8069268
Extension Boards268
Analog Special Adapter and Adapter Boards for FX269
Error Code List270
Error Codes 6101 to 6409270
Error Codes 6501 to 6510271
Error Codes 6610 to 6632272
Error Codes 6701 to 6710273
Number of Occupied Input/Output Points and Current Consumption274
Interface Adapter Boards and Communication Adapter Boards274
Special Adapters275
Extension Blocks275
Special Function Modules276
PLC Components Glossary277

Mitsubishi Electric FX Series - Page 230

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