Programming instructions

ii
LESSON 5 – Numeric Data in PLCs
5.1 Integer (16/32 Bit) .................................................................................... 45
5.2 Decimal (16/23 Bit) .................................................................................. 47
LESSON 6 – System Devices
6. System Devices....................................................................................... 49
LESSON 7 – Addressing
7.1 Right Side Bus Rules of Addressing ........................................................ 53
7.2 FX3U Left Side Bus Addressing .............................................................. 53
7.3 Example................................................................................................... 55
7.4 Exercise – PLC Addressing ..................................................................... 56
LESSON 8 – Demo Kit Layout
8.1 Addressing............................................................................................... 55
8.2 Indicator Lights ........................................................................................ 56
8.3 Operator Interface.................................................................................... 56
LESSON 9 – PLC Instruction Types
9.1 Basic Instructions..................................................................................... 59
9.2 STL (Step Ladder) Instructions................................................................ 59
9.3 Applied Instructions ................................................................................. 59
LESSON 10 – Basic Instructions
10.1 Symbols................................................................................................... 61
10.2 Ladder Basics.......................................................................................... 62
10.3 Common Instructions............................................................................... 63
10.4 Exercise – Ladder Basics ........................................................................ 65
LESSON 11 – Develop and Edit Programs
11.1 Launching GX-Developer......................................................................... 67
11.2 Creating a New Project............................................................................ 68
11.3 Editing the Ladder.................................................................................... 69
11.4 Program Transfer..................................................................................... 70
11.5 Online Editing .......................................................................................... 71
11.6 Monitor the Program Operation ............................................................... 72
11.7 Forcing Bits and Changing Registers ...................................................... 73
11.8 Exercise – Contacts and Coils................................................................. 73