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284
Pulse Outputs
Section 5-3
Procedure
Restrictions on the PWM(891) Outputs
• In the Y CPU Units, PWM outputs 0 and 1 cannot be used for pulse out-
puts 2 and 3 if the origin search function is enabled for pulse outputs 2
and 3.
Specifications
Note
The frequency can be set up to 6553.5 Hz in the PWM(891) instruction, but
the duty factor accuracy declines significantly at high frequencies because of
limitations in the output circuit at high frequencies.
5-3-10 Example Pulse Output Applications
Outputting Pulses after a Preset Delay
This example program waits for a preset time (0.5 ms) after the interrupt input
(CIO 0.00) goes ON and then outputs 100,000 pulses at 100 kHz from pulse
output 0.
Input interrupt task 0 (interrupt task number 140) starts a scheduled interrupt
with a scheduled time of 0.5 ms. The scheduled interrupt task executes the
pulse output instructions and stops the scheduled interrupt.
•
PWM output 0 or PWM output 1
•
Disable the origin search function for pulse
outputs 2 and 3.
Note: Disable the origin search function because the PWM output
shares the output with the origin search function's Error
Counter Reset Output and both cannot be used
simultaneously.
Execute PWM(891).
Determine the pulse output port.
Wire the outputs.
PLC Setup settings
(Y models only)
Ladder program
Item
Specifications
Duty factor
0.0% to 100.0% in 0.1% increments
(Duty factor accuracy is ±5% at 1 kHz.)
Frequency
0.1 Hz to 6,553.5 Hz
Set in 0.1 Hz units. (See note.)
Output mode
Continuous mode
Instruction
PWM(891)
MSKS
PULS SPED
Pulse output 0
(CIO 100.00)
Interrupt input 0
(CIO 0.00)
I/O interrupt
response time
Scheduled interrupt
time 500
µ
s
Summary of Contents for CP1H-CPU - 05-2006
Page 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Page 3: ...iv...
Page 11: ...xii TABLE OF CONTENTS...
Page 15: ...xvi...
Page 19: ...xx...
Page 31: ...xxxii Conformance to EC Directives 6...
Page 71: ...40 Function Blocks Section 1 5...
Page 133: ...102 Computing the Cycle Time Section 2 7...
Page 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Page 411: ...380 Clock Section 6 8...
Page 519: ...488 Replacing User serviceable Parts Section 10 2...
Page 527: ...496 Standard Models Appendix A...
Page 535: ...504 Dimensions Diagrams Appendix B...
Page 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Page 659: ...628 PLC Setup Appendix G...
Page 665: ...634 Index work words 159 write protection 370...
Page 667: ...636 Revision History...