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Contents
1. Introduction............................................................................................1-1
1.1 Overview..............................................................................................................1-1
1.2 What is a Pro
g
rammable Controller? ..................................................................1-2
1.3 What do You Need to Pro
g
ram a PLC? ..............................................................1-2
1.4 CPU version numbers .........................................................................................1-3
1.4.1 FX
0N
CPU versions................................................................................................... 1-3
1.4.2 FX and FX
2C
CPU versions.......................................................................................1-3
1.5 Special considerations for pro
g
rammin
g
equipment ...........................................1-4
1.5.1 FX CPU version 3.07 or later and FX
2C
...................................................................1-4
1.5.2 FX
2N
(C) CPU all versions ........................................................................................1-5
2. Basic Pro
g
ram Instructions ...................................................................2-1
2.1 What is a Pro
g
ram?............................................................................................. 2-1
2.2 Outline of Basic Devices Used in Pro
g
rammin
g
..................................................2-1
2.3 How to Read Ladder Lo
g
ic ..................................................................................2-2
2.4 Load, Load Inverse..............................................................................................2-3
2.5 Out....................................................................................................................... 2-4
2.5.1 Timer and Counter Variations ...................................................................................2-4
2.5.2 Double Coil Desi
g
nation............................................................................................2-5
2.6 And, And Inverse................................................................................................. 2-6
2.7 Or, Or Inverse......................................................................................................2-7
2.8 Load Pulse, Load Trailin
g
Pulse.......................................................................... 2-8
2.9 And Pulse, And Trailin
g
Pulse.............................................................................2-9
2.10 Or Pulse, Or Trailin
g
Pulse................................................................................2-10
2.11 Or Block............................................................................................................. 2-11
2.12 And Block ..........................................................................................................2-12
2.13 MPS, MRD and MPP.........................................................................................2-13
2.14 Master Control and Reset..................................................................................2-15
2.15 Set and Reset....................................................................................................2-17
2.16 Timer, Counter (Out & Reset)............................................................................2-18
2.16.1 Basic Timers, Retentive Timers And Counters........................................................ 2-18
2.16.2 Normal 32 bit Counters ...........................................................................................2-19
2.16.3 Hi
g
h Speed Counters ..............................................................................................2-19
2.17 Leadin
g
and Trailin
g
Pulse ................................................................................2-20
2.18 Inverse...............................................................................................................2-21
2.19 No Operation .....................................................................................................2-22
2.20 End ....................................................................................................................2-23
FX Series Programmable Controllers