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2.4 Instruction Details
1
2
3-153
Chapter 2 Instructions
SUB (Subtraction)
Coding
Description
• The SUB instruction subtracts the operand value from the contents of the internal
register and inputs the result back into the internal register.
• In the above example, "#00100" is subtracted from the contents of DM0000 and
the result is stored in DM0001.
• When the contents of DM0000 is "#00150", for example, "#00050" is stored in
DM0001.
DM0000 (#00150) – #00100 ➞ DM0001 (#00050)
Note 1: When the operation result is a negative value (-), the 2's complement value
is also stored in the internal register.
Special utility relay 2009 turns ON.
Note 2: To convert the complement into an antilogarithm, add the following opera-
tion:
Inverted bit of complement + 1 = Antilogarithm
Tips
Solution when operation result is a negative value
When DM0000 is "#10" and DM0001 is "#30", "#20" is stored in DM0003.
Arithmetic flag
2009 Turns ON when the result of a SUB operation is negative. Turns OFF at
other times.
2010 Turns ON when the contents of the internal register is "0" after a SUB
operation. Turns OFF at other times.
2011 Turns ON when the result of a SUB operation is positive. Turns OFF at other
times.
2012 The DM or relay indirectly addressed with #TM is out of range.
➮
"Indirect addressing" (p. 3-127)
DM0000
LDA
#00100
SUB
DM0001
STA
2002
Line No. Instruction Operand
0000 LD 2002
0001 LDA DM0000
0002 CON
0003 SUB #00100
0004 CON
0005 STA DM0001
0
1
= $0001
000000000000001
1
-
= $FFFF
111111111111111
0
= $0002
000000000000010
2009
2's complement is stored.
Internal register
Operand
Underflow
DM0000
LDA
DM0001
SUB
DM0002
STA
COM
#0001
ADD
DM0003
STA
2002 2009
2009
DM0000 - DM0001 =
(Stores positive value)
(Stores negative value)
Absolute value
is stored.
Positive value DM0002
Negative value DM0003
SUB / @SUB
KVNKA Chap 02_4cP.p65 08.3.11, 0:02 PM153
- Programming 1
- Safety Precautions 2
- WARRANTIES AND DISCLAIMERS: 2
- Note to User 3
- How this manual is organized 8
- Contents 10
- Chapter 2 Instructions 11
- Installation 13
- Chapter 6 Handheld Programmer 17
- 2 Support software 20
- Chapter 2 Editor KV-300 21
- Chapter 3 Simulator 22
- Chapter 4 Monitor 22
- Appendices 23
- WARRANTIES AND DISCLAIMERS 24
- Chapter 1 25
- 1.1 Before Creating Programs 26
- 1.1.2 Scan Time 27
- 1.2 User Memory 28
- 1.3 Device Configuration 29
- Chapter 1 Programming 30
- 1.3.2 Relay No 31
- 1.3.3 Assigning Relay Nos 32
- 1.3.4 Input Relays 33
- 1.3.5 Output Relays 34
- 1.3.6 Internal Utility Relays 35
- 1000 turns ON at every hour 36
- Other special utility relays 39
- 1.3.9 Timers and Counters 42
- 1.3.10 Data Memories 43
- 1.3.11 Temporary Data Memory 45
- 1.4 Special Functions 47
- Modification within the CPU 48
- 1.4.3 Constant Scan Time Mode 49
- 0000 2300 50
- 1.5 Extended Ladder Diagrams 51
- 0000 2301 52
- Chapter 2 57
- 2.1 Instruction List 58
- 2.1.3 Arithmetic Instructions 62
- 2.1.4 Interrupt Instructions 65
- 2.2 Instruction List 66
- 2.2.3 Arithmetic Instructions 72
- < DI > 78
- < EI > 78
- 2.3 Convention Details 79
- LD: Load 81
- LDB: Load Bar 81
- 0000 0001 82
- Incorrect 84
- ANL: And Load 85
- ORL: Or Load 87
- OUT: Out 89
- OUB: Out Bar 89
- SET: Set 90
- RES: Reset 90
- (TMR No.) 91
- TMH: 0.01-s Timer 92
- TMS: 1-ms Timer 93
- C: Counter 96
- 0002 C002 97
- Special utility relay 98
- (1-second clock) 98
- (Preset value) 100
- Low-order 101
- 4 digits 101
- High-order 101
- DIFU: Differentiate Up 102
- DIFD: Differentiate Down: 102
- Chapter 2 Instructions 103
- 2.4 Instruction Details 103
- KEEP: Keep 104
- SFT: Shift 106
- (Relay No.) 107
- Enable input 110
- 1) 2) 3) 111
- Turns ON 112
- 1-s timer 112
- MC: Master Control 113
- MCR: Master Control 113
- SW1SW2SW3SW4 116
- Details of MEMSW 117
- Description 117
- NOP: No Operation 118
- END: End 118
- ENDH: End Hi 118
- W-ON: Wait ON 120
- W-OFF: Wait OFF 120
- Operands 121
- Key operation 121
- W-UE: Wait Up Edge 122
- W-DE: Wait Down Edge 122
- 0503050205010500 126
- MPS: Push 127
- MRD: Read 127
- MPP: Pop 127
- Start of branch 128
- Connection of branch 128
- End of branch 128
- MPS MPS MPS MPS 129
- STG: Stage 130
- JMP: Jump 130
- ENDS: End Stage 130
- Details of STG instruction 132
- Initial setting 134
- Reset input 134
- STG start relay 134
- STG end relay 134
- Double coil 135
- Interlock 135
- 3 seconds 136
- STP: Step 138
- STE: Step End 138
- ITVL: Interval Timer 141
- Setting procedure 142
- CALL: Subroutine Call 146
- SBN: Subroutine Entry 146
- RET: Subroutine Return 146
- Subroutine program 148
- FOR: Repeat Start 149
- NEXT: Repeat End 149
- Indirect addressing 151
- This operation is repeated 153
- DM0000 is 153
- HKEY: 16-Key Input 155
- BCD Digital switch 157
- 2.4.3 Arithmetic Instructions 158
- Internal register 159
- @xxxx: Differentiation 161
- TMIN: Trimmer In 162
- Trimmer Setting 162
- LDA: Load A 164
- @LDA: Load A 164
- STA: Store A 164
- @STA: Store A 164
- Arithmetic flag 165
- CMP: Compare 170
- @CMP: Compare 170
- Hexadecimal 174
- ResultArithmetic operation 174
- ADD (Addition) 175
- DM0003) into DM100 176
- (Stores positive value) 177
- (Stores negative value) 177
- Positive value DM0002 177
- Negative value DM0003 177
- Hexadecimal number 179
- Remainder 180
- Quotient 181
- (DM0001+DM0002+DM0003) 182
- (DM0000) ^ ($00FF) = (DM0001) 183
- (Logical sum) 185
- Exclusive Or A 188
- (Exclusive 188
- @SLA: Shift Left A 190
- SRA: Shift Right A 190
- @SRA: Shift Right A 190
- SLA: Shift Left A 190
- RRA: Rotate Right A 193
- @RRA: Rotate Right A 193
- RLA: Rotate Left A 193
- @RLA: Rotate Left A 193
- Complement 195
- (Bit inversion) 195
- 0000 DM0000 197
- 7-segment display 203
- TBCD: Transfer BCD 204
- @TBCD: Transfer BCD 204
- TBIN: Transfer BIN 204
- @TBIN: Transfer BIN 204
- DM0000 x DM0001 = 206
- ... TM01 206
- ÷ #10000 206
- ROOT: Square Root 209
- @ROOT: Square Root 209
- 2.5 Programming Notes 213
- Programming precautions 214
- Chapter 3 215
- Interrupt 216
- Visual KV 217
- 3.2 Interrupt Processing 218
- 3.2.2 Types of Interrupts 219
- 3.2.3 Interrupt Priority 220
- 3.2.4 Interrupt Program 220
- 3.3 Direct Input/Output 221
- Two Points 225
- Chapter 4 227
- Input-enable relay 228
- Count input 228
- 1. KV-300/Visual KV only 228
- 2. Visual KV only 228
- * Read-only relay 231
- Counters 235
- 4.3.4 Count Input Method 236
- (Counter value) 237
- External 239
- (single-phase input) 248
- 4.4.4 Ring Counter Function 249
- 4.5.5 Cam Switch Function 257
- 4.6 Direct Clock Pulse Output 261
- Comparator 262
- Pulse period 263
- ON ON ON ON 264
- 00220.1 µs005 268
- 10220. 01 µs05 268
- 20220. 001 µs5 268
- Pulse Count 273
- (Ramp-up/down control) 275
- Chapter 5 277
- Upper digit 278
- Lower digit 278
- Procedures 279
- 5.2.2 Operating Procedure 281
- Control Function 282
- Function 283
- Set parameters for auto 290
- Stop pulse output at the 290
- Chapter 6 291
- 6.1 Interrupt Instructions 292
- Interrupt priority 293
- Interrupt routine 293
- Direct output 294
- Direct input 294
- 6.1.2 Interrupt Instructions 295
- INT: Interrupt 296
- RETI: Return Interrupt 296
- Pulse width 297
- 2206(OFF) 2206(ON) 297
- Example 3 298
- 6.1 Interrupt Instructions 299
- 6.2 Direct Clock Pulse 300
- For KV-10/80 users 301
- 6.2 High-speed Counters 302
- Outline of Pulse Output 303
- KV-10/80 307
- 2100 2200 1.0 µs 10 to 65535 307
- 2101 2201 10.0 µs1 to 65535 307
- 2102 2202 100.0 µs1 to 65535 307
- CTH0 value 308
- CTH1 value 310
- * Refer to page 3-276 311
- *Refer to page 3-276 314
- 0000001001101000 316
- Special utility 316
- 6.3 Positioning Control 320
- Setting parameters 321
- Preset frequency 322
- Run frequency 323
- Start frequency 323
- 6.3 Positioning Control 324
- Ramp-up/down control 325
- Chapter 7 329
- 10 ms or longer 332
- 100 ms or longer 332
- 7.2 Serial Communication 333
- Commands 335
- 7.2.5 Other Response Codes 339
- 7.2.6 Error Code List 340
- 7.2.7 Example Program 341
- 7.3 Loading Text Data 342
- 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 343
- 7.3.3 Sample Program 344
- 7.4 ASCII Code List 345
- 7.4 ASCII Code List 346
- Chapter 8 347
- 8.1 List 348
- Basic Instructions 350
- 8.2 Details 351
- Application Instructions 358
- Transfer 365
- Refer to p. 3-131 366
- Arithmetic Instructions 367
- Sets C001 381
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