MAN0974-14-EN_XL7_XL7P_UM
July 6, 2022
Page 102 | 199
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, 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 9.6 & 9.7
–
PWM, Two parameters, Duty Cycle & Frequency
Duty Cycle
Period