11.2.9 Comments and Hints .............................................................. 11-27 11.2.10 Symbol Mode and Address Mode .............................................. 11-29 11.2.11 Bookmark ............................................................................. 11-30 11.2.12 Activating/Inactivating a Network ............................................. 11-31 Chapter 12 Instruction List 12.1 Introduction of Instruction Lists .................................................. 12-2 12.1.1 Structure of an Instruction List .................................................. 12-2 12.1.2 Calling a Function Block ............................................................
12-4 12.1.3 Important Points About Instruction Lists ...................................... 12-5 12.2 Create Instruction List in ISPSoft ................................................. 12-7 12.2.1 Editing Environment ................................................................. 12-7 12.2.2 Edit IL instruction .................................................................... 12-8 12.2.3 Insert API and Function Blocks ................................................... 12-9 12.2.4 Bookmark .............................................................................
12-10 Chapter 13 Structured Texts 13.1 Introducing Structured Texts ....................................................... 13-2 13.1.1 Basic Structure of a Structured Text ........................................... 13-2 13.1.2 Statement .............................................................................. 13-3 13.1.3 Expression .............................................................................. 13-4 13.1.4 Operand and Operator .............................................................. 13-5 13.1.5 Keyword and Comment .............................................................
13-6 13.1.6 Using Array Symbols in ST ........................................................ 13-8 13.1.7 Notes on ST Programming ......................................................... 13-8 13.2 Structure of a Statement ............................................................ 13-11 13.2.1 Assignment Structure─:=........................................................ 13-11 13.2.2 Conditional Structure - IF ........................................................ 13-13 13.2.3 Conditional Structure─CASE .................................................... 13-15 13.2.4 Loop Structure - REPEAT .........................................................
13-18 13.2.5 Loop Structure - WHILE .......................................................... 13-19 13.2.6 Loop Structure - FOR .............................................................. 13-20 ix