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Chapter 5 Devices
5.1 Introduction of Devices ......................................................................... 5-2
5.1.1 Device Table ................................................................................ 5-2
5.1.2 Basic Structure of I/O Storages ....................................................... 5-3
5.1.3 Relation Between the PLC Action and the Device Type ........................ 5-4
5.1.4 Latched Areas in the Device Range .................................................. 5-5
5.2. Device Functions .................................................................................. 5-6
5.2.1 Values and Constants .................................................................... 5-6
5.2.2 Floating-point Numbers .................................................................. 5-9
5.2.3 Strings ...................................................................................... 5-11
5.2.4 Input Relays (X) ......................................................................... 5-12
5.2.5 Output Relays (Y) ....................................................................... 5-13
5.2.6 Auxiliary Relays (M) .................................................................... 5-13
5.2.7 Special Auxiliary Relays (SM) ........................................................ 5-13
5.2.8 Stepping Relays (S) .................................................................... 5-14
5.2.9 Timers (T) ................................................................................. 5-14
5.2.10 16-bit Counters .......................................................................... 5-16
5.2.11 32-bit Counters (HC) ................................................................... 5-18
5.2.12 Data Registers (D) ...................................................................... 5-20
5.2.13 Special Data Registers (SR) .......................................................... 5-21
5.2.14 Index Register (E) ....................................................................... 5-21
5.2.15 File Registers (FR) ....................................................................... 5-21
Chapter 6 Writing a Program
6.1 Quick Start ........................................................................................ 6-2
6.1.1 Example ...................................................................................... 6-2
6.1.2 Hardware ..................................................................................... 6-2
6.1.3 Program ...................................................................................... 6-3
6.2 Procedure for Creating a Project in ISPSoft ....................................... 6-3
6.3 Creating a Project .............................................................................. 6-4
6.4 Hardware Configuration .................................................................... 6-5
6.4.1 Co
nfiguring a Module ..................................................................... 6-5
6.4.2 Setting the Parameters .................................................................. 6-5
6.5 Creating a Program ........................................................................... 6-7
6.5.1 Adding a Ladder Diagram ............................................................... 6-7
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