5.1.1 Types of numeric values ....................................................................................................................... 151

5.1.2 Conversion of numeric values............................................................................................................... 152

5.1.3 Handling of numeric values in floating point operations........................................................................ 153

5.2 Specification of Constants K, H and E (Decimal, Hexadecimal and Real Number)............................. 155

5.2.1 Constant K (decimal number) ............................................................................................................... 155

5.2.2 Constant H (hexadecimal number) ....................................................................................................... 155

5.2.3 Constant E (real number)...................................................................................................................... 155

5.3 Character Strings ................................................................................................................................. 156

5.3.1 Character string constant ("ABC")......................................................................................................... 156

5.3.2 Character string data............................................................................................................................. 156

5.4 Specification of Digits for Bit Devices (Kn[ ]***).................................................................................... 157

5.5 Bit Specification of a Word Device (D[ ].b) ........................................................................................... 158

5.6 Direct Specification of Buffer Memory (U[ ]\G[ ]) .................................................................................. 158

5.7 Indexing................................................................................................................................................ 159

5.7.1 Indexing in basic instructions ................................................................................................................ 159

5.7.2 Indexing in applied instructions ............................................................................................................. 160

5.7.3 Indexing example for instruction with limited number of use................................................................. 162

6. What to Understand before Programming

6.1 How to Read Explanation of Instructions ............................................................................................. 163

6.2 Cautions on Creation of Fundamental Programs................................................................................. 166

6.2.1 Programming procedure and execution order....................................................................................... 166

6.2.2 Double output (double coil) operation and countermeasures ............................................................... 167

6.2.3 Circuits which cannot be programmed and countermeasures .............................................................. 168

6.3 I/O Processing and Response Delay ................................................................................................... 169

6.4 Mutual Relationship Among Program Flow Control Instructions.......................................................... 170

6.5 General Rules for Applied Instructions................................................................................................. 172

6.5.1 Expression and operation type of applied instructions.......................................................................... 172

6.5.2 Handling of general flags ...................................................................................................................... 174

6.5.3 Handling of operation error flag............................................................................................................. 176

6.5.4 Handling functions of extension flag ..................................................................................................... 176

6.5.5 Limitation in the number of instructions and limitation in simultaneous instruction instances............... 177

6.6 Symbolic information storage and block password .............................................................................. 178

6.6.1 Storage of symbolic information............................................................................................................ 178

6.6.2 Block password ..................................................................................................................................... 178

7. Basic Instruction

7.1 LD, LDI ................................................................................................................................................. 181

7.2 OUT...................................................................................................................................................... 183

7.3 AND, ANI.............................................................................................................................................. 186

7.4 OR, ORI ............................................................................................................................................... 189

7.5 LDP, LDF, ANDP, ANDF, ORP, ORF .................................................................................................. 192

7.6 ORB ..................................................................................................................................................... 198

7.7 ANB...................................................................................................................................................... 199

7.8 MPS, MRD, MPP ................................................................................................................................. 200

7.9 MC, MCR ............................................................................................................................................. 204

7.10 INV ..................................................................................................................................................... 207

7.11 MEP, MEF.......................................................................................................................................... 208

7.12 PLS, PLF............................................................................................................................................ 210

7.13 SET, RST ........................................................................................................................................... 213

7.14 NOP ................................................................................................................................................... 216

7.15 END.................................................................................................................................................... 217

7.16 Number of Instruction Steps and Specified Devices .......................................................................... 218

Table of Contents

151

163

179

Table of Contents