General Purpose PWM Auxiliary Outputs work in a very similar way to General Purpose Auxiliary Output's but have the added ability to control the frequency and Duty Cycle of the output via 3d tables instead of the output being a purely on/off switched.

The conditions must be met before any signal is output on the selected auxiliary.

 

100% Duty cycle = completely on

0% duty cycle = completely off

 

This function Pulse Width Modulates an auxiliary output at a constant or variable frequency with a variable duty cycle. This function is used for generic control of solenoids and interfacing to other electronic devices, typical applications include nitrous injection, water injection, non linear frequency output to old speedometers and many more.

 

GP PWM outputs will pulse width modulate (PWM) an auxiliary output pin at a given frequency. The frequency can either be constant or come from a 3D table. The output duty cycle will be taken from a 3D table when all the on conditions specified are met. The output will continue to be applied for the given time period (SwOff Timer value) after conditions cease to be met. When conditions are not met, the output will be off (0% duty cycle) in the same way a GP Output is off (taking into account the polarity setting).

 

Again, to summarise, the auxiliary output will:

 

·Be off (0%) until the on conditions are met.

·On conditions operate the same as for a GP Auxiliary Output.

·PWM for a period of time after on conditions are met.

·On Delay sets the time in seconds that the output will continue to be off for after the conditions are met.

·PWM when switch conditions are met.

·Duty cycle is taken from the Aux x PWM DC table found under Auxiliary Outputs in the settings tree.. Duty Cycle can range from 0 to 100%.

·The Frequency settings select if the frequency is constant or taken from a Table. When Table mode is selected, the frequency is entered in the Aux x PWM Freq table found under Auxiliary Outputs in the settings tree.

·PWM for a period of time after on conditions are not met.

·Off Delay sets the time in seconds that the output will continue to PWM for after the conditions are no longer met.