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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instructions Edition
Table of Contents
Table of Contents
Related manuals ............................................................................................................................. 14
Generic Names and Abbreviations Used in Manuals .................................................................. 20
1. Introduction 22
1.1 Programming Language in PLCs........................................................................................................... 22
1.1.1 Types of programming languages...........................................................................................................22
1.1.2 Compatibility among programs ...............................................................................................................23
2. Overview (Sequence Program) 24
2.1 Introduction of Convenient Functions..................................................................................................... 24
2.1.1 Convenient functions for input processing ..............................................................................................24
2.1.2 Convenient functions for output processing............................................................................................25
2.1.3 Functions for supporting sequence control.............................................................................................25
2.2 Introduction of Applied Instructions........................................................................................................26
2.2.1 Major applied instructions .......................................................................................................................26
2.3 Analog/Positioning Special Control........................................................................................................ 27
2.4 Link and Communication........................................................................................................................28
2.5 Introduction of Devices Constructing PLC .............................................................................................29
2.5.1 Relationship among devices ...................................................................................................................29
2.5.2 Device list................................................................................................................................................30
2.6 Program Memory and Devices...............................................................................................................32
2.6.1 Memory structure ....................................................................................................................................32
2.6.2 Memory operations and latched (battery or EEPROM backed) devices
(power ON/OFF and RUN/STOP).....................................................................................................34
2.6.3 Types of backup methods against power failure.....................................................................................38
2.6.4 Change between general devices and latched (battery backed) devices...............................................39
2.6.5 How to initialize devices (battery backed)...............................................................................................39
2.7 Types and Setting of Parameters........................................................................................................... 40
2.7.1 Parameter list..........................................................................................................................................40
2.7.2 Parameter initial values and available tools for changing parameter values ..........................................42
2.7.3 Memory capacity setting range ...............................................................................................................44
2.7.4 Compatible optional memory model........................................................................................................45
2.7.5 Keyword (entry code)..............................................................................................................................46
2.7.6 Special unit initial value setting [GX Developer Ver.8.23Z or later].........................................................51
2.7.7 Positioning setting [for TBL (FNC152) instruction] [GX Developer Ver.8.23Z or later] ...........................51
2.7.8 Built-in CC-Link/LT Setup (dedicated to FX
3UC-32MT-LT-2)..................................................................51
2.7.9 Parameter settings by GX Developer......................................................................................................51
3. Instruction List 64
3.1 Basic Instructions................................................................................................................................... 64
3.2 Step Ladder Instructions ........................................................................................................................66
3.3 Applied Instructions ... in Ascending Order of FNC Number..................................................................66
4. Devices in Detail 80
4.1 Device Number List................................................................................................................................ 80
4.2 I/O Relays [X, Y].....................................................................................................................................84
4.2.1 Numbers of I/O relays .............................................................................................................................84
4.2.2 Functions and roles.................................................................................................................................85
4.2.3 Operation timing of input relays ..............................................................................................................86
4.3 Auxiliary Relay [M] ................................................................................................................................. 87
4.3.1 Numbers of auxiliary relays.....................................................................................................................87
4.3.2 Functions and operation examples .........................................................................................................87