Omron CJ2M-CPU Series - Section 9 PWM Outputs; PWM Outputs (Variable Duty Ratio Pulse Outputs); Overview

9 PWM Outputs
9-2
CJ2M CPU Unit Pulse I/O Module User’s Manual
9-1 PWM Outputs (Variable Duty Ratio
Pulse Outputs)
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.
z Application Example
• Controlling temperature on a time-proportional basis using the PWM output.
• Controlling the brightness of lighting.
9-1-1 Overview
CJ2M CPU Unit
Pulse
I/O Module
Connecting Cable
Connector-Terminal Block
Conversion Unit
Duty ratio: 50%
Duty ratio: 15%
Duty ratio: 75%
Outputs
PWM output
Period is determined
by frequency.
100%
50%
75%
15%