Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 782

High-speed Counter/Pulse Output Instructions
Example
0.00
3-20-10 PULSE WITH VARIABLE DUTY FACTOR: PWM(891)
Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operands
When CIO 0.00 turns ON in the following programming example, ORG(889)
starts an origin return operation for pulse output 0 by outputting pulses using
the CW/CCW method. According to the PLC Setup, the initial speed is
100 pps, the target speed is 200 pps, and the acceleration and deceleration
rates are 50 Hz/4 ms.
@ORG
#0000 Pulse output 0
#1000 Origin return, CW/CWW method
The PLC Setup parameters are as follows:
Parameter
Pulse Output 0 Starting Speed for Origin Search and
Origin Return
Pulse Output 0 Origin Return Target Speed
Pulse Output 0 Origin Return Acceleration Rate
Pulse Output 0 Origin Return Deceleration Rate
PWM(891) is used to output pulses with the specified duty factor from the
specified port.
PWM
P
P: Port specifier
F
F: Frequency
D
D: Duty factor
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification
Block program areas
OK
P: Port Specifier
The port specifier specifies the port where the pulses will be output.
P
0000 hex Pulse output 0
Duty factor in increments of 1%, Frequency in increments of 0.1 Hz
0001 hex Pulse output 1
Duty factor in increments of 1%, Frequency in increments of 0.1 Hz
1000 hex Pulse output 0
Duty factor in increments of 0.1%, Frequency in increments of 0.1 Hz
1001hex Pulse output 1
Duty factor in increments of 0.1%, Frequency in increments of 0.1 Hz
Speed
200 pps
100 pps
ORG(889) executed.
Step program areas Subroutines
OK OK
Port
Section 3-20
Time
Output stopped.
Setting
0000 0064 hex: 100 pps
0000 00C8 hex: 200 pps
0032 hex: 50 hex/4 ms
0032 hex: 50 hex/4 ms
PWM(891)
@PWM(891)
Not supported
Interrupt tasks
OK
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