Keyence Visual KV Series Manual de usuario descargar pdf (Pagina 22)

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4.2.1 High-speecÛCounters and High-speed Counter Comparators ...................... 3-206

Structure of high-speed counters and high-speed counter comparators .3-206

Specifications of high-speed counters .....................................................3-208

High-speed counter comparators............................................................. 3-209

4.2.2 Internal Clock for High-speed Counters..........................................................3-210

4.3 Setting and Operation of High-speed Counters ........................................3-211

4.3.1 Reading the Current Value of the High-speed Counter ..................................3-211

4.3.2 Preset Value of the High-speed Counter Comparator ....................................3-211

4.3.3 Comparator Output .........................................................................................3-211

4.3.4 Count Input Method ........................................................................................3-212

4.3.5 Resetting the High-speed Counter .................................................................3-214

4.3.6 Differences with the CTH Instruction between the

Conventional and Visual KV Series ................................................................3-216

4.3.7 Applications of High-speed Counters ............................................................. 3-217

4.4 Extended Functions of High-speed Counters ...........................................3-221

4.4.1 24-bit High-speed Counter..............................................................................3-221

4.4.2 Changing the Current Value of a 24-bit High-speed Counter .........................3-223

4.4.3 Application Example of 24-bit High-speed Counter (single-phase input) .......3-224

4.4.4 Ring Counter Function ....................................................................................3-225

4.4.5 Applications of Ring Counters ........................................................................3-226

4.5 Special Functions Using High-speed Counters ........................................3-228

4.5.1 Specified Frequency Pulse Output Function .................................................. 3-228

4.5.2 Applications of the Specified Frequency Pulse Output ................................... 3-229

4.5.3 Frequency Counter Function .......................................................................... 3-231

4.5.4 Applications of Frequency Counters ............................................................... 3-232

4.5.5 Cam Switch Function ......................................................................................3-233

Cam switch mode ....................................................................................3-233

Multi-step comparator mode ....................................................................3-234

Setting method .........................................................................................3-234

4.5.6 Application of the Cam Switch (Cam Switch Mode) ....................................... 3-236

4.6 Direct Clock Pulse Output ...........................................................................3-237

4.6.1 Outline of Direct Clock Pulse Output .............................................................. 3-237

4.6.2 Pulse Output Setting with the High-speed Counter Comparator .................... 3-238

Changing the pulse period and width.......................................................3-238

Calculating the pulse period and comparator preset value ...................... 3-239

Operation with special utility relays .......................................................... 3-239

4.7 Examples of Direct Clock Pulse Output ....................................................3-242

4.7.1 Example of Outputting a Pulse with 1:1 ON/OFF Ratio .................................. 3-242

4.7.2 Example of Outputting a Pulse with Variable ON/OFF Ratio.......................... 3-245

4.7.3 Example of Stopping the Pulse Output at a Specified Pulse Count ............... 3-249

4.7.4 Application of Direct Clock Pulse Output (Ramp-up/down control) ................3-251

Chapter 5 Positioning Control Visual KV

5.1 Outline of Positioning Control ....................................................................3-254

5.1.1 Ramp-up/down Control ...................................................................................3-254

5.2 Parameter Setting and Operating Procedures ..........................................3-255

5.2.1 Parameter Setting Procedure ......................................................................... 3-255

5.2.2 Operating Procedure ......................................................................................3-257

5.3 Examples of Using the Positioning Control Function ..............................3-258

5.3.1 Connection Example.......................................................................................3-258

5.3.2 Tips .................................................................................................................3-258

5.3.3 Application Examples of the Positioning Control Function ............................. 3-259

Chapter 6 Interrupts, High-speed Counters,

Positioning Control KV-300, KV-10/80

6.1 Interrupt Instructions ...................................................................................3-268

6.1.1 Description of Interrupts..................................................................................3-268

Input processing for routine program and interrupt routine ...................... 3-268

Types of interrupt .....................................................................................3-268

Interrupt priority ........................................................................................3-269

Interrupt routine........................................................................................3-269

Direct output.............................................................................................3-270

Direct input ............................................................................................... 3-270

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Keyence Visual KV Series Manual de usuario Pagina 22

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