Publication 1763-RM001C-EN-P - October 2009
542
Knowledgebase Quick Starts
# 17446 “Quick Start”
Pulse Width Modulation
(PWM)
NOTE:
The PWM function is only available when using the BBB models
of the MicroLogix 1100.
Locate the Function Files under Controller in RSLOGIX 500 v7.00.00 or
later and select the PWM tab, then select the [+] next to PWM:0 (See
Below).
Enter the following parameters as the “Minimum Configuration” required
for the PWM to generate a waveform at the specified frequency.
PWM:0.OUT
Select Destination Output for pulses: Output O:0/2 or O:0/3
PWM:0.OFS
Output Frequency - Frequency of the PWM: 0 to 20,000 Hz
PWM:0.DC
PWM Duty Cycle - Controls the output signal of the PWM: 1 to 1000
DC = 1000
100%
Output
ON
(Constant no waveform)
DC = 0750
075%
Output
ON
025% Output
OFF
DC = 0500
050%
Output
ON
050% Output
OFF
DC = 0250
025%
Output
ON
075% Output
OFF
DC = 0000
000%
Output
OFF
(Constant no Waveform)
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