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CHAPTER 8 FUNCTIONS
8
8.16 PWM Output F
unction
(3) Setting method of the output waveform
Set the output waveform by using CH
ON width setting (PWM output) (RWw1E to RWw1F, RWw36 to RWw37)
and CH
Cycle setting (PWM output) (RWw20 to RWw21, RWw38 to RWw39).
The following table lists the setting items.
*1
Set the value that is equal to or smaller than the one set to the cycle setting (PWM output).
●
The ON width of the PWM output is calculated from the following formula according to the duty ratio to be specified.
ON width of the PWM output = Cycle of the PWM output × Duty ratio [%]
÷
100
●
Given that output circuits or connected devices of the high-speed counter module do not affect the value, the margin of
error (maximum) of each setting value is calculated as shown below.
• ON width setting (PWM output) [µs] × 100 [ppm]
÷
1 0.1 [µs]
• Cycle setting (PWM output) [µs] × 100 [ppm]
÷
1 0.1 [µs]
Setting item
Setting range
Description
Remarks
CH
ON width setting (PWM output)
(RWw1E to RWw1F, RWw36 to RWw37)
0, 10 to 10000000
*1
Set the ON time of the output pulse.
0.1µs per unit
CH
Cycle setting (PWM output)
(RWw20 to RWw21, RWw38 to RWw39)
50 to 10000000
Set the cycle of the output pulse.
0.1µs per unit
ON width setting (PWM output)
Cycle setting (PWM output)
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