Omron CJ1M-CPU21, Operation Manual

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Built-in Outputs Section 6-2
Restrictions The following restrictions apply when using S-curve acceleration/deceleration.
Starting Frequency
The starting frequency must be 100 Hz or greater. If the starting frequency is
set to less than 100 Hz, it will automatically be increased to 100 Hz if S-curve
acceleration/deceleration is set.
Target Frequency
S-curve acceleration/deceleration will not be performed if the target frequency
is less than 100 Hz.
6-2-4 Variable Duty Ratio Pulse Outputs (PWM(891) Outputs)
Overview
The PWM(891) instruction is used to generate PWM(891) (Pulse Width Mod-
ulation) pulse outputs with a specified duty ratio. The duty ratio is the ratio of
the pulse's ON time and OFF time in one pulse cycle. The duty ratio can be
changed while pulses are being output.
Bit Allocations
50 Hz
100 Hz
Automatically
increased
to 100 Hz.
Pulse frequency
Time
50 Hz
No
acceleration/deceleration
Code Word address Bit Function
OUT4 CIO 2961 04 PWM(891) output 0
OUT5 05 PWM(891) output 1