i i iChapter 5 Devices5.1 Introduction of Devices ......................................................................... 5-25.1.1 Device Table ................................................................................ 5-25.1.2 Basic Structure of I/O Storages ....................................................... 5-35.1.3 Relation Between the PLC Action and the Device Type ........................ 5-45.1.4 Latched Areas in the Device Range .................................................. 5-55.2. Device Functions .................................................................................. 5-65.2.1 Values and Constants .................................................................... 5-65.2.2 Floating-point Numbers.................................................................. 5-95.2.3 Strings ...................................................................................... 5-115.2.4 Input Relays (X) ......................................................................... 5-125.2.5 Output Relays (Y) ....................................................................... 5-135.2.6 Auxiliary Relays (M) .................................................................... 5-135.2.7 Special Auxiliary Relays (SM) ........................................................ 5-135.2.8 Stepping Relays (S) .................................................................... 5-145.2.9 Timers (T) ................................................................................. 5-145.2.10 16-bit Counters .......................................................................... 5-165.2.11 32-bit Counters (HC) ................................................................... 5-185.2.12 Data Registers (D) ...................................................................... 5-205.2.13 Special Data Registers (SR) .......................................................... 5-215.2.14 Index Register (E) ....................................................................... 5-215.2.15 File Registers (FR)....................................................................... 5-21Chapter 6 Writing a Program6.1 Quick Start ........................................................................................ 6-26.1.1 Example ...................................................................................... 6-26.1.2 Hardware ..................................................................................... 6-26.1.3 Program ...................................................................................... 6-36.2 Procedure for Creating a Project in ISPSoft ....................................... 6-36.3 Creating a Project .............................................................................. 6-46.4 Hardware Configuration .................................................................... 6-56.4.1 Configuring a Module ..................................................................... 6-56.4.2 Setting the Parameters .................................................................. 6-56.5 Creating a Program ........................................................................... 6-76.5.1 Adding a Ladder Diagram ............................................................... 6-7
