Table Of Contents - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instructions Edition

Table of Contents

Related manuals...................................................................................................................... 14
Generic Names and Abbreviations Used in Manuals .......................................................... 21
1. Introduction
1.1 Programming Language in PLCs .................................................................................................. 23
1.1.1 Types of programming languages ................................................................................................. 23
1.1.2 Compatibility among programs...................................................................................................... 24
2. Overview (Sequence Program)
2.1 Introduction of Convenient Functions............................................................................................ 25
2.1.1 Convenient functions for input processing..................................................................................... 25
2.1.2 Convenient functions for output processing .................................................................................. 26
2.1.3 Functions for supporting sequence control.................................................................................... 26
2.2 Introduction of Applied Instructions ............................................................................................... 27
2.2.1 Major applied instructions.............................................................................................................. 28
2.3 Analog/Positioning Special Control ............................................................................................... 29
2.4 Link and Communication............................................................................................................... 30
2.5 Introduction of Devices Constructing PLC .................................................................................... 31
2.5.1 Relationship among devices.......................................................................................................... 31
2.5.2 Device list ...................................................................................................................................... 32
2.6 Program Memory and Devices...................................................................................................... 34
2.6.1 Memory structure........................................................................................................................... 34
2.6.2 Memory operations and latched (battery backed) (power ON/OFF and RUN/STOP)................... 36
2.6.3 Types of backup methods against power failure ........................................................................... 41
2.6.4 Change between general devices and latched (battery backed) devices ..................................... 42
2.6.5 How to initialize devices (battery backed) ..................................................................................... 42
2.7 Types and Setting of Parameters.................................................................................................. 43
2.7.1 Parameter list ................................................................................................................................ 43
2.7.2 Parameter initial values and available tools for changing parameter values................................. 45
2.7.3 Memory capacity setting range...................................................................................................... 47
2.7.4 Compatible optional memory model .............................................................................................. 48
2.7.5 Keyword (entry code) .................................................................................................................... 49
2.7.6 Special unit initial value setting [GX Developer Ver.8.23Z or later] ............................................... 55
2.7.7 Positioning setting [for TBL (FNC152) instruction] [GX Developer Ver.8.23Z or later].................. 55
2.7.8 Built-in CC-Link/LT Setup (dedicated to FX
2.7.9 Parameter settings by GX Developer ............................................................................................ 55
3. Instruction List
3.1 Basic Instructions .......................................................................................................................... 68
3.2 Step Ladder Instructions ............................................................................................................... 70
3.3 Applied Instructions ... in Ascending Order of FNC Number......................................................... 70
4. Devices in Detail
4.1 Device Number List....................................................................................................................... 84
4.2 I/O Relays [X, Y]............................................................................................................................ 89
4.2.1 Numbers of I/O relays.................................................................................................................... 89
4.2.2 Functions and roles ....................................................................................................................... 90
4.2.3 Operation timing of input relays..................................................................................................... 91
4.3 Auxiliary Relay [M] ........................................................................................................................ 92
4.3.1 Numbers of auxiliary relays ........................................................................................................... 92
4.3.2 Functions and operation examples................................................................................................ 92
-32MT-LT-2)......................................................... 55
3UC
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