1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

162 Using High-Speed Outputs• Set (1) - Whenever the PWM instruction is within the run phase ofthe output profile.• Cleared (0) - Whenever the PWM instruction is not within the runphase of the output profile.PWMX Accelerating Status (AS)Element Description Address Data Format Range Type User ProgramAccessAS - Accelerating Status PWM:0/AS bit 0 or 1 status read onlyThe PWMX AS (Accelerating Status) bit is controlled by the PWMsub-system. It can be used by an input instruction on any rung within thecontrol program. The AS bit operates as follows:• Set (1) - Whenever a PWM output is within the acceleration phase ofthe output profile.• Cleared (0) - Whenever a PWM output is not within the accelerationphase of the output profile.PWMX Profile Parameter Select (PP)Element Description Address Data Format Range Type User ProgramAccessPP - Profile Parameter Select PWM:0/PP bit 0 or 1 control read/writeThe PWMX PP (Profile Parameter Select) selects which component of thewaveform is modified during a ramp phase:• Set (1) - selects Frequency• Cleared (0) - selects Duty CycleThe PWMX PP bit cannot be modified while the PWM output is running/enabled. See PWMX ADD on page 166 for more information.Publication 1766-RM001A-EN-P - October 2008