![background image](http://html1.mh-extra.com/html/omron/cp1l-cpu-unit-03-2009/cp1l-cpu-unit-03-2009_operation-manual_742084284.webp)
250
Pulse Outputs
Section 5-2
5-2-9
Variable Duty Factor Pulse Outputs (PWM(891) Outputs)
Overview
PWM (Pulse Width Modulation) pulse outputs can be output with a specified
duty factor. The duty factor is the ratio of the pulse's ON time and OFF time in
one pulse cycle. Use the PWM(891) instruction to generate variable duty fac-
tor pulses from a built-in output.
The duty factor can be changed while pulses are being output.
Bit Allocations
Procedure
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.
5-2-10 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 0.04) goes ON and then outputs 100,000 pulses at 100 kHz from pulse
output 0.
Word
Bit
Function
CIO 100
01
PWM output 0
03
PWM output 1
Item
Specifications
Duty factor
0.0% to 100.0% in 0.1% increments
(Duty factor accuracy is
+
1%/
−
0% at10 kHz,
+
5%/
−
0% at
10 to 32.8 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)
•
PWM output 0 or PWM output 1
•
Enable/disable the origin search function.
Execute PWM(891).
Determine the pulse output port.
Wire the outputs.
PLC Setup settings
Ladder program
Summary of Contents for CP1L CPU UNIT - 03-2009
Page 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Page 2: ......
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 70: ...36 Function Blocks Section 1 5...
Page 584: ...550 Trouble Shooting Section 8 7...
Page 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 630: ...596 Sample Application Section 9 12...
Page 654: ...620 Troubleshooting Unit Errors Section 11 4...
Page 662: ...628 Replacing User serviceable Parts Section 12 2...
Page 668: ...634 Standard Models Appendix A...
Page 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Page 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Page 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Page 806: ...772 Index...
Page 808: ...774 Revision History...