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Chapter 7 Usage of Various Functions
7-95
5) PWM output (PWM)
Available device
Flag
Instruction
M P K L F T C S D
#
D
integer
No. of
steps
Error
(F110)
Zero
(F111)
Carry
(F112)
S
○
SV1
○
○
○
○
○
○
○
○
○
○
SV2
○
○
○
○
○
○
○
○
○
○
7
○
S
Ch. for PWM output(0~1)
SV1
PWM output period( 1 ~ 20000)[ms]
Error
(F110)
Error flag turns on when designating area is over
and the instruction isn’t executed
SV2
Off Duty(0 ~ 100%)
■
PWM S SV1 SV2
(1) Functions
•
When input condition turns on, Output pulses which have period as SV1.
•
Duty ratio of pulses is assigned by SV2.
•
When input condition turns off, PWM operation stops
(2) Example program
•
When input condition turns on, Output pulses as below
PWM
PWM(Pulse Width Modulation) output
Designation
Flag set
450ms
50ms
500ms
Positioning Ch 1(P41)
Input condition(M0000)