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PULSE WITH VARIABLE DUTY FACTOR: PWM(891) Section 5-10
The PLC Setup parameters are as follows:
5-10 PULSE WITH VARIABLE DUTY FACTOR: PWM(891)
Purpose PWM(891) is used to output pulses with the specified duty factor from the
specified port.
This instruction is supported by the CJ1M-CPU21/CPU22/CPU23 CPU Units
only.
Ladder Symbol
Variations
Applicable Program Areas
Operands P: Port Specifier
The port specifier specifies the port where the pulses will be output.
Note Pulse output 1 can be used only with the CJ1M-CPU22/23.
F: Frequency
F specifies the frequency of the pulse output between 0.1 and 6,553.5 Hz
(0.1 Hz units, 0001 to FFFF hex). The accuracy of the PMW(891) waveform
that is actually output (ON duty +5%/
−0%) applies only to 0.1 to 1,000.0 Hz
due to limitations in the output circuits.
D: Duty Factor
D specifies the duty factor of the pulse output, i.e., the percentage of time that
the output is ON. D must be between 0% and 100% (0000 to 0064 hex)
Parameter Setting
Pulse Output 0 Starting Speed for Origin Search and
Origin Return
0000 0064 hex: 100 pps
Pulse Output 0 Origin Return Target Speed 0000 00C8 hex: 200 pps
Pulse Output 0 Origin Return Acceleration Rate 0032 hex: 50 hex/4 ms
Pulse Output 0 Origin Return Deceleration Rate 0032 hex: 50 hex/4 ms
PWM
P
F
D
P: Port specifier
F: Frequency
D: Duty factor
Variations Executed Each Cycle for ON Condition PWM(891)
Executed Once for Upward Differentiation @PWM(891)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
PPort
0000 hex Pulse output 0 (duty factor: in increments of 1%)
0001 hex Pulse output 1 (duty factor: in increments of 1%)
1000 hex
(CJ1M CPU Unit Ver. 2.0 only)
Pulse output 0 (duty factor: in increments of 0.1%)
1001 hex
(CJ1M CPU Unit Ver. 2.0 only)
Pulse output 1 (duty factor: in increments of 0.1%)
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