MAN0964-13-EN_XL4_UM
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9.5 High Speed Output Functions
On units that support High-Speed Output functions, two dedicated outputs are available that
can be configured for one of four modes of operation. Those modes are Normal, PWM, HSC
Match, and Stepper.
9.5.1 Normal
When either Q1 or Q2 is configured for Normal operation, the digital output registers %Q1 and
%Q2 drives that respective output.
9.5.2 PWM
When either Q1 or Q2 is configured for PWM, the PWM function drives that respective output.
Both PWM channels may be individually enabled and can have independent frequency and
duty cycles.
The PWMs require two parameters (%AQs) to be set for operation. These parameters may be
set at run time.
Duty Cycle - The Duty Cycle is a 32-bit value from 0 to 32,000 indicating the relative duty cycle of
the output. For example, a value of 8000 would indicate a 25% duty cycle, a value of 16,000
would indicate a 50% duty cycle. Zero (0) turns the output off, and 32,000 turns the output on.
Frequency - The Frequency is a 32-bit value indicating the output frequency in Hertz. One over
the frequency is the period.
Figures 9.7 & 9.8 – PWM, two parameters, Duty Cycle & Frequency
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