Pwm Outputs (Variable Duty Ratio Pulse Outputs); Overview - Omron SYSMAC CJ Series User Manual

9 PWM Outputs
9-1 PWM Outputs (Variable Duty Ratio
Pulse Outputs)
9-1-1

Overview

A PWM (Pulse Width Modulation) pulse can be output with a specified duty ratio. The duty ratio is the
ratio of the pulse's 'ON time and OFF time in one pulse cycle.
Use the PWM(891) instruction to generate PWM pulses from a pulse output.
The duty ratio can be changed during pulse output.
Application Example
• Controlling temperature on a time-proportional basis using the PWM output.
• Controlling the brightness of lighting.
Duty ratio: 15%
Duty ratio: 50%
Duty ratio: 75%
9-2
Pulse
CJ2M CPU Unit
I/O Module
Connecting Cable
Connector-Terminal Block
Conversion Unit
Outputs
PWM output
Period is determined
100%
by frequency.
15%
50%
75%
CJ2M CPU Unit Pulse I/O Module User's Manual