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205
High-speed Counters
Section 5-2
• The counting mode can be set to linear mode or circular (ring) mode.
• The counter reset method can be set to Z phase software reset,
software reset, Z phase software reset (continue comparing), or
software reset (continue comparing).
Pulse Input Functions
5-2-2
High-speed Counter Specifications
Specifications
Purpose
Function used
Description
Receive incremental rotary
encoder inputs to calculate
length or position.
High-speed counter
function
Built-in input terminals can be used for high-speed counter
inputs.
The PV for the high-speed counters are stored in the Auxiliary
Area.
The counters can be operated in ring mode or linear mode.
Measure a workpiece's length
or position.
(Start counting when a certain
condition is established or
pause counting when a certain
condition is established.)
High-speed Counter
Gate Bit
The high-speed counter can be started or stopped (PV held)
from the Unit's program by turning ON/OFF the High-speed
Counter Gate Bit when the desired condition is met.
Measure a workpiece's speed
from its position data (frequency
measurement.)
PRV(881) HIGH-
SPEED COUNTER
PV READ
The PRV(881) instruction can be used to measure the pulse fre-
quency.
• Range with differential phase inputs: 0 to 50 kHz (Y models: 0
to 500 kHz)
• Range with all other input modes: 0 to 100 kHz (Y models: 0 to
1 MHz)
PRV2(883) PULSE
FREQUENCY CON-
VERT
PRV2(883) reads the pulse frequency and converts it to a rota-
tional speed (r/min) or it converts the counter PV to a total num-
ber of rotations. Results are calculated by the number of pulses/
rotation.
Item
Specification
Number of high-speed counters
4 (High-speed counters 0 to 3)
Pulse input modes (Selected in the PLC
Setup)
Differential phase
inputs
Up/down inputs
Pulse + direction
inputs
Increment inputs
Input terminal allocation
Phase-A input
Increment pulse
input
Pulse input
Increment pulse
input
Phase-B input
Decrement pulse
input
Direction input
---
Phase-Z input
Reset input
Reset input
Reset input
Input method
Differential phase,
4x
(Fixed)
Two single-phase
inputs
Single-phase
pulse + direction
inputs
Single-phase
input
Response
frequency
X/XA
CPU
Unit
Counters
0 to 3
24 VDC
inputs
50 kHz
100 kHz
100 kHz
100 kHz
Y CPU
Unit
Counters
0 and 1
Line
driver
inputs
500 kHz
1 MHz
1 MHz
1 MHz
Counters
2 and 3
24 VDC
inputs
50 kHz
100 kHz
100 kHz
100 kHz
Counting mode
Linear mode or circular (ring) mode (Select in the PLC Setup.)
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...